diff --git a/bin/test/oop/ch03/chess/ChessTest.class b/bin/test/oop/ch03/chess/ChessTest.class
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diff --git a/bin/uebung05/logistics/material/MetGallonsKerosene.class b/bin/uebung05/logistics/material/MetGallonsKerosene.class
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diff --git a/bin/uebung09/chess/Board.class b/bin/uebung09/chess/Board.class
index bfa82bb..8dee0ab 100644
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diff --git a/bin/uebung09/iterator/Array2dIterator.class b/bin/uebung09/iterator/Array2dIterator.class
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diff --git a/src/test/oop/ch03/chess/ChessTest.java b/src/test/oop/ch03/chess/ChessTest.java
deleted file mode 100644
index 4b46c23..0000000
--- a/src/test/oop/ch03/chess/ChessTest.java
+++ /dev/null
@@ -1,168 +0,0 @@
-package oop.ch03.chess;
-
-import org.junit.After;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Test;
-
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-
-import static org.junit.Assert.assertEquals;
-
-public class ChessTest {
-    // Das Zeilenende wird auf Windows-Systemen anders codiert als auf Nicht-Windows-Systemen.
-    // Die folgende Zeile ermittelt die aktuelle Codierung.
-    // EOL = "End of Line"
-    private static final String LS = System.lineSeparator();
-    private static final String HE = "    1   2   3   4   5   6   7   8" + LS;
-    private static final String LI = "  +---+---+---+---+---+---+---+---+" + LS;
-    private static final String EMP = " |   |   |   |   |   |   |   |   |" + LS;
-    private static final String WK1 = " | n |   |   |   |   |   |   |   |" + LS;
-    private static final String WQ3 = " |   |   | q |   |   |   |   |   |" + LS;
-    private static final String CO1 = " |   |   | n |   | N | Q |   |   |" + LS;
-    private static final String INIT_BOARD = board(EMP, EMP, EMP, EMP, EMP, EMP, EMP, EMP);
-    private static final String WK61_BOARD = board(EMP, EMP, EMP, EMP, EMP, WK1, EMP, EMP);
-    private static final String APP1_BOARD = board(EMP, EMP, EMP, EMP, WQ3, CO1, EMP, EMP);
-    private static final String CHECK_TEXT1 = "white queen at (4, 2)" + LS +
-                                              "   cannot capture black queen at (8, 6)" + LS +
-                                              "   cannot capture white knight at (6, 4)" + LS +
-                                              "black queen at (8, 6)" + LS +
-                                              "   cannot capture white queen at (4, 2)" + LS +
-                                              "   can capture white knight at (6, 4)" + LS +
-                                              "white knight at (6, 4)" + LS +
-                                              "   cannot capture white queen at (4, 2)" + LS +
-                                              "   cannot capture black queen at (8, 6)" + LS;
-    private static final String CHECK_TEXT2 = "white knight at (6, 3)" + LS +
-                                              "   cannot capture black knight at (6, 5)" + LS +
-                                              "   cannot capture black queen at (6, 6)" + LS +
-                                              "   cannot capture white queen at (5, 3)" + LS +
-                                              "black knight at (6, 5)" + LS +
-                                              "   cannot capture white knight at (6, 3)" + LS +
-                                              "   cannot capture black queen at (6, 6)" + LS +
-                                              "   can capture white queen at (5, 3)" + LS +
-                                              "black queen at (6, 6)" + LS +
-                                              "   cannot capture white knight at (6, 3)" + LS +
-                                              "   cannot capture black knight at (6, 5)" + LS +
-                                              "   cannot capture white queen at (5, 3)" + LS +
-                                              "white queen at (5, 3)" + LS +
-                                              "   cannot capture white knight at (6, 3)" + LS +
-                                              "   cannot capture black knight at (6, 5)" + LS +
-                                              "   cannot capture black queen at (6, 6)" + LS;
-
-    private static String board(String... s) {
-        if (s.length != 8)
-            throw new IllegalArgumentException("Expected 8, but got " + s.length + " arguments");
-        StringBuilder sb = new StringBuilder();
-        sb.append(HE).append(LI);
-        for (int i = 1; i <= 8; i++)
-            sb.append(i).append(s[i - 1]).append(LI);
-        return sb.toString();
-    }
-
-    private Board board;
-
-    private final ByteArrayOutputStream printed = new ByteArrayOutputStream();
-    private final PrintStream printStream = new PrintStream(printed, true);
-
-    @Before
-    public void setup() {
-        board = new Board();
-        printed.reset();
-        System.setOut(printStream);
-    }
-
-    @After
-    public void tearDown() {
-        printStream.close();
-    }
-
-    @Test
-    public void testEmpty() {
-        board.printBoard();
-        assertEquals(INIT_BOARD, printed.toString());
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testInvalidPos1() {
-        new Knight(Color.white, board, 0, 4);
-    }
-
-    @Test(expected = IllegalArgumentException.class)
-    public void testInvalidPos2() {
-        new Queen(Color.white, board, 0, 4);
-    }
-
-    @Test
-    public void testWhiteknight() {
-        final Piece knight = new Knight(Color.white, board, 6, 1);
-        checkPieces(1);
-        assertEquals(knight, board.pieceAt(6, 1));
-        board.printBoard();
-        assertEquals(WK61_BOARD, printed.toString());
-    }
-
-    @Test
-    public void test3Pieces() {
-        final Piece queen1 = new Queen(Color.white, board, 4, 2);
-        final Piece queen2 = new Queen(Color.black, board, 8, 6);
-        final Piece knight = new Knight(Color.white, board, 6, 4);
-        Assert.assertFalse(queen1.canCapture(queen2));
-        Assert.assertFalse(queen1.canCapture(knight));
-        Assert.assertFalse(queen2.canCapture(queen1));
-        Assert.assertTrue(queen2.canCapture(knight));
-        Assert.assertFalse(knight.canCapture(queen1));
-        Assert.assertFalse(knight.canCapture(queen2));
-        checkPieces(3);
-        assertEquals(queen1, board.pieceAt(4, 2));
-        assertEquals(queen2, board.pieceAt(8, 6));
-        assertEquals(knight, board.pieceAt(6, 4));
-        board.check();
-        assertEquals(CHECK_TEXT1, printed.toString());
-    }
-
-    @Test
-    public void test4Pieces() {
-        final Piece knight1 = new Knight(Color.white, board, 6, 3);
-        final Piece knight2 = new Knight(Color.black, board, 6, 5);
-        final Piece queen1 = new Queen(Color.black, board, 6, 6);
-        final Piece queen2 = new Queen(Color.white, board, 5, 3);
-        checkPieces(4);
-        assertEquals(knight1, board.pieceAt(6, 3));
-        assertEquals(knight2, board.pieceAt(6, 5));
-        assertEquals(queen1, board.pieceAt(6, 6));
-        assertEquals(queen2, board.pieceAt(5, 3));
-        board.printBoard();
-        assertEquals(APP1_BOARD, printed.toString());
-        Assert.assertFalse(knight1.canCapture(knight2));
-        Assert.assertFalse(knight1.canCapture(queen1));
-        Assert.assertFalse(knight1.canCapture(queen2));
-        Assert.assertFalse(knight2.canCapture(knight1));
-        Assert.assertFalse(knight2.canCapture(queen1));
-        Assert.assertTrue(knight2.canCapture(queen2));
-        Assert.assertFalse(queen1.canCapture(knight1));
-        Assert.assertFalse(queen1.canCapture(knight2));
-        Assert.assertFalse(queen1.canCapture(queen2));
-        Assert.assertFalse(queen2.canCapture(knight1));
-        Assert.assertFalse(queen2.canCapture(knight2));
-        Assert.assertFalse(queen2.canCapture(queen1));
-        printed.reset();
-        board.check();
-        assertEquals(CHECK_TEXT2, printed.toString());
-    }
-
-    private void checkPieces(int expectedNumPieces) {
-        int numPieces = 0;
-        for (int row = 1; row < 9; row++)
-            for (int col = 1; col < 9; col++)
-                if (board.pieceAt(row, col) != null)
-                    numPieces++;
-        assertEquals(expectedNumPieces, numPieces);
-    }
-
-    @Test
-    public void testRunWithErrors() {
-        final Piece rook = new Rook(Color.white, board, 1, 1);
-        assertEquals(rook, board.pieceAt(1, 1));
-    }
-}
\ No newline at end of file
diff --git a/src/test/oop/ch05/generic/mensa/MensaTest.java b/src/test/oop/ch05/generic/mensa/MensaTest.java
deleted file mode 100644
index b3a3e06..0000000
--- a/src/test/oop/ch05/generic/mensa/MensaTest.java
+++ /dev/null
@@ -1,80 +0,0 @@
-package oop.ch05.generic.mensa;
-
-import oop.ch05.generic.secured.AuthorizationException;
-import org.junit.Before;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertThrows;
-
-public class MensaTest {
-    private static final String CONF_ACCOUNT = "33-1298";
-    private static final String OTHER_ACCOUNT = "33-1299";
-    private AccountManagement accountMgt;
-    private VendingMachine vm1;
-    private VendingMachine vm2;
-    private VendingMachine tumVM;
-    private CashPoint unibwMensa;
-
-    private AccountCard conf;
-    private MensaCard frankSmith;
-    private CashCard hansMueller;
-    private CashCard peterSchmidt;
-    private CashCard thomasMayer;
-
-    @Before
-    public void setup() {
-        accountMgt = new AccountManagement(4711, "UniBw admin");
-
-        vm1 = new VendingMachine("left", 4711);
-        vm2 = new VendingMachine("right", 4711);
-        tumVM = new VendingMachine("TUM Mensa", 3141);
-        unibwMensa = new CashPoint("UniBw Mensa", 4711, accountMgt);
-
-        conf = new AccountCard("conference", CONF_ACCOUNT, 42);
-        frankSmith = new CountCard("Frank Smith", Color.gray);
-        hansMueller = new CashCard("Hans Müller", Color.green, 4711);
-        peterSchmidt = new CashCard("Peter Schmidt", Color.green, 4711);
-        thomasMayer = new CashCard("Thomas Mayer", Color.blue, 4711);
-    }
-
-    @Test
-    public void testPayment() throws AuthorizationException, RejectedException {
-        vm1.deposit(hansMueller, 10);
-        vm1.deposit(peterSchmidt, 5);
-        vm2.deposit(thomasMayer, 2);
-        assertThrows(AuthorizationException.class, () -> tumVM.deposit(hansMueller, 10));
-
-        assertEquals(15, vm1.getEuros());
-        assertEquals(2, vm2.getEuros());
-        assertEquals(0, tumVM.getEuros());
-        assertEquals(1000, hansMueller.getBalance());
-        assertEquals(500, peterSchmidt.getBalance());
-        assertEquals(200, thomasMayer.getBalance());
-
-        hansMueller.pass(unibwMensa);
-        assertEquals(733, hansMueller.getBalance());
-        assertEquals(1, unibwMensa.getCounter());
-        assertEquals(267, unibwMensa.getCents());
-
-        frankSmith.pass(unibwMensa);
-        assertEquals(0, accountMgt.getAmount(CONF_ACCOUNT));
-        assertThrows(RejectedException.class, () -> conf.pass(unibwMensa));
-        assertThrows(RejectedException.class, () -> thomasMayer.pass(unibwMensa));
-        hansMueller.pass(unibwMensa);
-        hansMueller.pass(unibwMensa);
-        assertEquals(199, hansMueller.getBalance());
-
-        assertThrows(RejectedException.class, () -> hansMueller.pass(unibwMensa));
-
-        accountMgt.deposit(CONF_ACCOUNT, 1000);
-        accountMgt.deposit(OTHER_ACCOUNT, 2000);
-        assertEquals(100000, accountMgt.getAmount(CONF_ACCOUNT));
-        assertEquals(200000, accountMgt.getAmount(OTHER_ACCOUNT));
-
-        conf.pass(unibwMensa);
-        assertEquals(99505, accountMgt.getAmount(CONF_ACCOUNT));
-        assertEquals(200000, accountMgt.getAmount(OTHER_ACCOUNT));
-        assertEquals(5, unibwMensa.getCounter());
-    }
-}
diff --git a/src/test/oop/ch08/gui/mvc/TestModel.java b/src/test/oop/ch08/gui/mvc/TestModel.java
deleted file mode 100644
index 2275ed6..0000000
--- a/src/test/oop/ch08/gui/mvc/TestModel.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package oop.ch08.gui.mvc;
-
-import oop.ch08.gui.mvc.model.CounterModel;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-
-public class TestModel {
-  @Test
-  public void testInitWithZero() {
-    final CounterModel model = new CounterModel();
-    assertEquals(0, model.getCounter());
-  }
-
-  @Test
-  public void testInc() {
-    final CounterModel model = new CounterModel();
-    int counter = model.getCounter();
-    model.increment();
-    assertEquals(++counter, model.getCounter());
-    model.increment();
-    assertEquals(++counter, model.getCounter());
-  }
-}
diff --git a/src/test/oop/ch09/calc/test/AdHocCalculatorEdgePairTest.java b/src/test/oop/ch09/calc/test/AdHocCalculatorEdgePairTest.java
deleted file mode 100644
index df6d4ff..0000000
--- a/src/test/oop/ch09/calc/test/AdHocCalculatorEdgePairTest.java
+++ /dev/null
@@ -1,2040 +0,0 @@
-package oop.ch09.calc.test;
-
-import oop.ch06.calc.AdHocCalculator;
-import oop.ch06.calc.Ops;
-import org.junit.Before;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-public class AdHocCalculatorEdgePairTest {
-  private AdHocCalculator calc;
-
-  @Before
-  public void setup() {
-    calc = new AdHocCalculator();
-    calc.digit(6);
-    calc.binOp(Ops.MULT);
-    calc.digit(7);
-    calc.eval();
-  }
-
-  @Test
-  public void test0() {
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(45.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(45.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-45.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(-45.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-102.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(5.0345753587649823E-45, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-5.0345753587649823E-45, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(148.4131591025766, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.03368973499542734, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.03368973499542734, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.1835476368560144, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test1() {
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(0.6, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1096.6331584284585, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-1093.6331584284585, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1196033.485214206, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test2() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test3() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test4() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test5() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(51.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test6() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test7() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test8() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test9() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test10() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(35.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test11() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test12() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(93.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.451245542920086E40, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test13() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test14() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test15() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test16() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test17() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1764.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(1764.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test18() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test19() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test20() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test21() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(20.085536923187668, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test22() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test23() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test24() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test25() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test26() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test27() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test28() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test29() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test30() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test31() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test32() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test33() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test34() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(69.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(69.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-69.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test35() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test36() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test37() {
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test38() {
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(2.3, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.3, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(2.3, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test39() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test40() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test41() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test42() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test43() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test44() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test45() {
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test46() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(12.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(12.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(3.4641016151377544, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test47() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test48() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test49() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(8103.083927575384, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test50() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(78.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(8.831760866327848, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test51() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test52() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(72.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test53() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(64.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test54() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(421.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test62() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test63() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test64() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test65() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test66() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test67() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test68() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test69() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test70() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test71() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.33, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test72() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test73() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test74() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test75() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(0.7, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.7, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test76() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test77() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test78() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(0.9, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.45960311115695, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test79() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test80() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test81() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test82() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test83() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test84() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test85() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(0.01831563888873418, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(4.7, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(109.94717245212352, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test86() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(652.4540390039687, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test87() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test88() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(12.752532700090239, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(29.24746729990976, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test89() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test90() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(35.51925930159214, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test91() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test92() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test93() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-1.73927494152050099E18, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test94() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-    calc.digit(6);
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test95() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test96() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test97() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-1764.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test98() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test99() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.4147993510032952E-17, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(2.4147993510032952E-17, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test100() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test101() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(48.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.1347969605334383E21, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test102() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test103() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(515.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-473.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-473.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test104() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(272.19110933313016, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test105() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test106() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test107() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(7.304954754386104E19, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test108() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test109() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test110() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(168.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test111() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test112() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(44.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test113() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test114() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test115() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(252.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.7682763318657856E109, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test116() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test117() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test118() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test119() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(252.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test120() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test121() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(43.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(43.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test122() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test123() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test124() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(36.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test125() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test126() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test127() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(41.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.4031242374328485, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test128() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(54.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test129() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(126.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test130() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.8284271247461903, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(44.82842712474619, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test131() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(33.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test132() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test133() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2980.9579870417283, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test134() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test135() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test136() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test137() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(27.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(27.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test138() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(31.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(73.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test139() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(43.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-43.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test140() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(20.085536923187668, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test141() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(75.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test142() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test143() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test144() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test145() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test146() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test147() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-    calc.binOp(Ops.MINUS);
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test148() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test149() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test150() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(0.6, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test151() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test152() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test153() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test154() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test155() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(0.4, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(41.6, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test156() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test157() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test158() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test159() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test160() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(0.9, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(0.97, calc.getValue(), 1e-10);
-  }
-}
diff --git a/src/test/oop/ch09/calc/test/AdHocCalculatorEdgeTest.java b/src/test/oop/ch09/calc/test/AdHocCalculatorEdgeTest.java
deleted file mode 100644
index 3d7efc8..0000000
--- a/src/test/oop/ch09/calc/test/AdHocCalculatorEdgeTest.java
+++ /dev/null
@@ -1,280 +0,0 @@
-package oop.ch09.calc.test;
-
-import oop.ch06.calc.AdHocCalculator;
-import oop.ch06.calc.Ops;
-import org.junit.Before;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-public class AdHocCalculatorEdgeTest {
-  private AdHocCalculator calc;
-
-  @Before
-  public void setup() {
-    calc = new AdHocCalculator();
-    calc.digit(6);
-    calc.binOp(Ops.MULT);
-    calc.digit(7);
-    calc.eval();
-  }
-
-  @Test
-  public void test0() {
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(62.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(62.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test1() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(5.25, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test2() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test3() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test4() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test5() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test6() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test7() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test8() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(9.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test9() {
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-5.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test11() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test12() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(0.2, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.2214027581601699, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test13() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test14() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test15() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-1.73927494152050099E18, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test16() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(-1.73927494152050099E18, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test17() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test18() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test19() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(25.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-25.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test20() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(51.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test21() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.6457513110645907, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test22() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test23() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test24() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-}
diff --git a/src/test/oop/ch09/calc/test/CalculatorEdgePairTest.java b/src/test/oop/ch09/calc/test/CalculatorEdgePairTest.java
deleted file mode 100644
index f3254d6..0000000
--- a/src/test/oop/ch09/calc/test/CalculatorEdgePairTest.java
+++ /dev/null
@@ -1,2040 +0,0 @@
-package oop.ch09.calc.test;
-
-import oop.ch06.calc.Ops;
-import oop.ch07.calc.Calculator;
-import org.junit.Before;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
-public class CalculatorEdgePairTest {
-  private Calculator calc;
-
-  @Before
-  public void setup() {
-    calc = new Calculator();
-    calc.digit(6);
-    calc.binOp(Ops.MULT);
-    calc.digit(7);
-    calc.eval();
-  }
-
-  @Test
-  public void test0() {
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(45.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(45.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-45.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(-45.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(-51.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-102.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(5.0345753587649823E-45, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-5.0345753587649823E-45, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(148.4131591025766, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.03368973499542734, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.03368973499542734, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.1835476368560144, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test1() {
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(0.6, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1096.6331584284585, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-1093.6331584284585, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1196033.485214206, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test2() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test3() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test4() {
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test5() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(51.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test6() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test7() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test8() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test9() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test10() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(35.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test11() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test12() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(93.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.451245542920086E40, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test13() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test14() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test15() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test16() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test17() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1764.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(1764.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test18() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test19() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test20() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test21() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(20.085536923187668, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test22() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test23() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test24() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test25() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test26() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test27() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test28() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test29() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test30() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test31() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test32() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test33() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test34() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(69.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(69.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-69.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test35() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test36() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test37() {
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test38() {
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(2.3, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.3, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(2.3, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test39() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test40() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test41() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test42() {
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test43() {
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test44() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test45() {
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test46() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(12.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(12.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(3.4641016151377544, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test47() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test48() {
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test49() {
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(8103.083927575384, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test50() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(78.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(8.831760866327848, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test51() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test52() {
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(72.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test53() {
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(64.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test54() {
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(421.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test62() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test63() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test64() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test65() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test66() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test67() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test68() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test69() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test70() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test71() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.33, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test72() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test73() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test74() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test75() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(0.7, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.7, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test76() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test77() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test78() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(0.9, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.45960311115695, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test79() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test80() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test81() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test82() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test83() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test84() {
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test85() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-4.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(0.01831563888873418, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(4.7, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(109.94717245212352, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test86() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(652.4540390039687, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test87() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test88() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(12.752532700090239, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(29.24746729990976, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test89() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test90() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(35.51925930159214, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test91() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test92() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(0.3, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test93() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-1.73927494152050099E18, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test94() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.5457298950218306, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-    calc.digit(6);
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test95() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test96() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test97() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(-1764.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test98() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test99() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(2.4147993510032952E-17, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(2.4147993510032952E-17, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test100() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test101() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(48.48074069840786, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.1347969605334383E21, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test102() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test103() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(51.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(515.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-473.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(-473.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test104() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(272.19110933313016, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test105() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test106() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(84.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test107() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(7.304954754386104E19, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test108() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test109() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test110() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.48074069840786, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(168.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test111() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test112() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.73927494152050099E18, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(44.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test113() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test114() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MINUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test115() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(252.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2.7682763318657856E109, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test116() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test117() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test118() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test119() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(252.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test120() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test121() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(43.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(43.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test122() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test123() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test124() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(36.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test125() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test126() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test127() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(41.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(6.4031242374328485, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test128() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(5.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(54.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test129() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(126.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test130() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(2.8284271247461903, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(44.82842712474619, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test131() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(9.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.DIV);
-    assertEquals(33.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test132() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-6.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test133() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(8);
-    assertEquals(8.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(2980.9579870417283, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test134() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test135() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test136() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(4);
-    assertEquals(4.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test137() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(2);
-    assertEquals(2.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(27.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(27.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test138() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(31.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(73.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test139() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(1);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(43.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-43.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test140() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(20.085536923187668, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test141() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-    calc.digit(5);
-    assertEquals(75.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test142() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(3);
-    assertEquals(3.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test143() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.PLUS);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test144() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test145() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test146() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test147() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertTrue(Double.isNaN(calc.getValue()));
-    calc.binOp(Ops.MINUS);
-    assertTrue(Double.isNaN(calc.getValue()));
-  }
-
-  @Test
-  public void test148() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.binOp(Ops.MULT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test149() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test150() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(6);
-    assertEquals(0.6, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test151() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test152() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test153() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.clear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test154() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.EXP);
-    assertEquals(1.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-1.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test155() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(4);
-    assertEquals(0.4, calc.getValue(), 1e-10);
-    calc.binOp(Ops.MINUS);
-    assertEquals(41.6, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test156() {
-    calc.binOp(Ops.PLUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.unOp(Ops.SQRT);
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(7.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test157() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.eval();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-  }
-
-  @Test
-  public void test158() {
-    calc.binOp(Ops.DIV);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.digit(6);
-    assertEquals(6.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test159() {
-    calc.binOp(Ops.MINUS);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.allClear();
-    assertEquals(0.0, calc.getValue(), 1e-20);
-    calc.unOp(Ops.CHANGE_SIGN);
-    assertEquals(-0.0, calc.getValue(), 1e-10);
-  }
-
-  @Test
-  public void test160() {
-    calc.binOp(Ops.MULT);
-    assertEquals(42.0, calc.getValue(), 1e-10);
-    calc.dot();
-    assertEquals(0.0, calc.getValue(), 1e-10);
-    calc.digit(9);
-    assertEquals(0.9, calc.getValue(), 1e-10);
-    calc.digit(7);
-    assertEquals(0.97, calc.getValue(), 1e-10);
-  }
-}
diff --git a/src/test/oop/ch09/testing/ExceptionTest.java b/src/test/oop/ch09/testing/ExceptionTest.java
deleted file mode 100644
index 20533be..0000000
--- a/src/test/oop/ch09/testing/ExceptionTest.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package oop.ch09.testing;
-
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-public class ExceptionTest {
-  @Test
-  public void testDivZero1() {
-    int zero = 0;
-    int result = 4 / zero;
-    assertTrue(true);
-  }
-
-  @Test
-  public void testDivZero2() {
-    int zero = 0;
-    try {
-      int result = 4 / zero;
-      fail("ArithmeticException kam nicht");
-    }
-    catch (ArithmeticException ex) {
-      assertEquals("/ by zero", ex.getMessage());
-    }
-  }
-
-  @Test(expected = ArithmeticException.class)
-  public void testDivZero2b() {
-    int zero = 0;
-    int result = 4 / zero;
-  }
-}
diff --git a/src/test/uebung/uebung04/tournament/TournamentTest.java b/src/test/uebung/uebung04/tournament/TournamentTest.java
deleted file mode 100644
index 5dbff2d..0000000
--- a/src/test/uebung/uebung04/tournament/TournamentTest.java
+++ /dev/null
@@ -1,134 +0,0 @@
-package test.uebung.uebung04.tournament;
-
-import org.junit.Before;
-import org.junit.Test;
-
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.Set;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertThrows;
-
-public class TournamentTest {
-
-    private static final String BORGHOFF = "Prof. Borghoff";
-    private static final String HOMMEL = "Prof. Hommel";
-    private static final String KOCH = "Prof. Koch";
-    private static final String MINAS = "Prof. Minas";
-    private static final String BUCHENRIEDER = "Prof. Buchenrieder";
-    private static final String DREO = "Prof. Dreo";
-    private static final String ROSE = "Prof. Rose";
-    private static final String SIEGLE = "Prof. Siegle";
-    private static final String TEEGE = "Prof. Teege";
-    private static final Set<String> SET1 = Set.of(BORGHOFF, HOMMEL, KOCH, MINAS, BUCHENRIEDER, DREO, ROSE, SIEGLE, TEEGE);
-    private static final Set<String> SET2 = Set.of(BORGHOFF, MINAS, SIEGLE, HOMMEL, DREO);
-    private static final Set<String> SET3 = Set.of(BORGHOFF, MINAS, SIEGLE);
-    private static final Set<String> SET4 = Set.of(MINAS, SIEGLE);
-    private static final Set<String> SET5 = Set.of(MINAS);
-
-    private Tournament tournament;
-    private Game r1s1;
-    private Game r1s2;
-    private Game r1s3;
-    private Game r1s4;
-    private Game r2s1;
-    private Game r2s2;
-    private Game r3s1;
-    private Game r4s1;
-
-    @Before
-    public void setup() {
-        r1s1 = new SeededGame(HOMMEL, KOCH);
-        r1s2 = new SeededGame(MINAS, BUCHENRIEDER);
-        r1s3 = new SeededGame(DREO, ROSE);
-        r1s4 = new SeededGame(SIEGLE, TEEGE);
-        r2s1 = new ByeGame(BORGHOFF, r1s1);
-        r2s2 = new OrdinaryGame(r1s2, r1s3);
-        r3s1 = new OrdinaryGame(r2s1, r2s2);
-        r4s1 = new OrdinaryGame(r3s1, r1s4);
-        tournament = new Tournament("UniBw Sportschießen", r4s1);
-    }
-
-    @Test
-    public void testBeforeFirstRound() {
-        assertEquals(SET1, asSet(tournament.getAllPlayers()));
-        assertEquals(SET1, asSet(tournament.getRemainingPlayers()));
-    }
-
-    @Test
-    public void testFirstRound() {
-        r1s1.setWinner(HOMMEL);
-        r1s2.setWinner(MINAS);
-        r1s3.setWinner(DREO);
-        r1s4.setWinner(SIEGLE);
-        assertEquals(SET1, asSet(tournament.getAllPlayers()));
-        assertEquals(SET2, asSet(tournament.getRemainingPlayers()));
-    }
-
-    @Test
-    public void testSecondRound() {
-        r1s1.setWinner(HOMMEL);
-        r1s2.setWinner(MINAS);
-        r1s3.setWinner(DREO);
-        r1s4.setWinner(SIEGLE);
-        r2s1.setWinner(BORGHOFF);
-        r2s2.setWinner(MINAS);
-        assertEquals(SET1, asSet(tournament.getAllPlayers()));
-        assertEquals(SET3, asSet(tournament.getRemainingPlayers()));
-    }
-
-    @Test
-    public void testThirdRound() {
-        r1s1.setWinner(HOMMEL);
-        r1s2.setWinner(MINAS);
-        r1s3.setWinner(DREO);
-        r1s4.setWinner(SIEGLE);
-        r2s1.setWinner(BORGHOFF);
-        r2s2.setWinner(MINAS);
-        r3s1.setWinner(MINAS);
-        assertEquals(SET1, asSet(tournament.getAllPlayers()));
-        assertEquals(SET4, asSet(tournament.getRemainingPlayers()));
-    }
-
-    @Test
-    public void testCompleteTournament() {
-        r1s1.setWinner(HOMMEL);
-        r1s2.setWinner(MINAS);
-        r1s3.setWinner(DREO);
-        r1s4.setWinner(SIEGLE);
-        r2s1.setWinner(BORGHOFF);
-        r2s2.setWinner(MINAS);
-        r3s1.setWinner(MINAS);
-        r4s1.setWinner(MINAS);
-        assertEquals(SET1, asSet(tournament.getAllPlayers()));
-        assertEquals(SET5, asSet(tournament.getRemainingPlayers()));
-    }
-
-    @Test
-    public void testException() {
-        r1s1.setWinner(HOMMEL);
-        r1s2.setWinner(MINAS);
-        r1s3.setWinner(DREO);
-        r1s4.setWinner(SIEGLE);
-        r2s1.setWinner(BORGHOFF);
-        r2s2.setWinner(MINAS);
-        r3s1.setWinner(MINAS);
-        assertThrows(IllegalArgumentException.class, () -> r4s1.setWinner(BUCHENRIEDER));
-    }
-
-    @Test(expected = IllegalStateException.class)
-    public void testException2() {
-        r4s1.setWinner(MINAS);
-    }
-
-    @Test
-    public void testException3() {
-        r1s1.setWinner(HOMMEL);
-        assertThrows(IllegalStateException.class, () -> r1s1.setWinner(HOMMEL));
-    }
-
-    private static <T> Set<T> asSet(Collection<T> collection) {
-        return new HashSet<>(collection);
-    }
-}
diff --git a/src/test/uebung/uebung05/logistics/ManagerTest.java b/src/test/uebung/uebung05/logistics/ManagerTest.java
index 0eb3a56..9038428 100644
--- a/src/test/uebung/uebung05/logistics/ManagerTest.java
+++ b/src/test/uebung/uebung05/logistics/ManagerTest.java
@@ -1,13 +1,18 @@
-package logistics;
+package test.uebung.uebung05.logistics;
+
+import uebung05.logistics.Helicopter;
+import uebung05.logistics.Manager;
+import uebung05.logistics.Tank;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.Grease;
+import uebung05.logistics.material.LiterDiesel;
+import uebung05.logistics.material.MetGallonsKerosene;
+import uebung05.logistics.material.Oil;
+import uebung05.logistics.material.RocketPods;
+import uebung05.logistics.material.ShellBatches;
+import uebung05.logistics.quantities.NeedCollector;
+
 
-import logistics.material.BulletBelts;
-import logistics.material.Grease;
-import logistics.material.LiterDiesel;
-import logistics.material.MetGallonsKerosene;
-import logistics.material.Oil;
-import logistics.material.RocketPods;
-import logistics.material.ShellBatches;
-import logistics.quantities.NeedCollector;
 import org.junit.Before;
 import org.junit.Test;
 
diff --git a/src/test/uebung/uebung05/logistics/storage/IntStorageTest.java b/src/test/uebung/uebung05/logistics/storage/IntStorageTest.java
index b6ca56a..5f85bfa 100644
--- a/src/test/uebung/uebung05/logistics/storage/IntStorageTest.java
+++ b/src/test/uebung/uebung05/logistics/storage/IntStorageTest.java
@@ -1,6 +1,8 @@
 package test.uebung.uebung05.logistics.storage;
 
-import uebung05.*;
+import uebung05.logistics.material.Oil;
+import uebung05.logistics.storage.IntStorage;
+
 import org.junit.Before;
 import org.junit.Test;
 
diff --git a/src/uebung04/ByeGame.java b/src/uebung04/ByeGame.java
index dbb47f1..a0797a4 100644
--- a/src/uebung04/ByeGame.java
+++ b/src/uebung04/ByeGame.java
@@ -1,20 +1,26 @@
 package uebung04;
 
+import java.util.ArrayList;
+
 public class ByeGame extends Game{
 
     private String player1;
+    private String player2;
     
 
-    public ByeGame(String player1, Game player2){
+    public ByeGame(String player1, String player2){
         this.player1 = player1;
         this.player2 = player2;
 
     }
 
     public String getPlayer1(){return player1;}
+    public String getPlayer2(){return player2;}
 
-    public ??? getPlayer2(){
-        return player2.getAllPlayers();
+    @Override
+    public ArrayList<String> getAllPlayers() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getAllPlayers'");
     }
 
     
diff --git a/src/uebung04/OrdinaryGame.java b/src/uebung04/OrdinaryGame.java
index 3d718aa..7bf948f 100644
--- a/src/uebung04/OrdinaryGame.java
+++ b/src/uebung04/OrdinaryGame.java
@@ -7,7 +7,7 @@ public class OrdinaryGame extends Game{
     private final int id;
 
 
-    public OrdinaryGame(Game player1, Game player2){
+    public OrdinaryGame(String player1, String player2){
         this.player1 = player1;
         this.player2 = player2;
         
@@ -15,18 +15,16 @@ public class OrdinaryGame extends Game{
         counter++;
     }
 
-    public ArrayList<String> getPlayer1(){
-        return player1.getAllPlayers();
+    public String getPlayer1(){
+        return null;
     }
 
-    public ArrayList<String> getPlayer2(){
-        return player2.getAllPlayers();
+    public String getPlayer2(){
+        return null;
     }
 
     public ArrayList<String> getAllPlayers(){
-        ArrayList<String> rtn = player1.getAllPlayers();
-        rtn.addAll(player2.getAllPlayers());
-        return rtn;
+        return null;
     }
     
 }
diff --git a/src/uebung05/logistics/Demo.java b/src/uebung05/logistics/Demo.java
index 9081424..e1278cc 100755
--- a/src/uebung05/logistics/Demo.java
+++ b/src/uebung05/logistics/Demo.java
@@ -1,8 +1,8 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.material.BulletBelts;
-import logistics.material.LiterDiesel;
-import logistics.material.RocketPods;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.LiterDiesel;
+import uebung05.logistics.material.RocketPods;
 
 class demo {
 
diff --git a/src/uebung05/logistics/Helicopter.java b/src/uebung05/logistics/Helicopter.java
index 8d53e33..2243148 100755
--- a/src/uebung05/logistics/Helicopter.java
+++ b/src/uebung05/logistics/Helicopter.java
@@ -1,13 +1,13 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.material.BulletBelts;
-import logistics.material.MetGallonsKerosene;
-import logistics.material.RocketPods;
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
-import logistics.storage.FloatStorage;
-import logistics.storage.IntStorage;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.MetGallonsKerosene;
+import uebung05.logistics.material.RocketPods;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
+import uebung05.logistics.storage.FloatStorage;
+import uebung05.logistics.storage.IntStorage;
 
 /**
  * The Helicopter class represents a helicopter in the logistics system.
diff --git a/src/uebung05/logistics/Manager.java b/src/uebung05/logistics/Manager.java
index b954c8e..16d4780 100755
--- a/src/uebung05/logistics/Manager.java
+++ b/src/uebung05/logistics/Manager.java
@@ -1,9 +1,9 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
-import logistics.quantities.Unit;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
+import uebung05.logistics.quantities.Unit;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -63,7 +63,7 @@ public class Manager {
      *
      * @return The NeedCollector object containing the needs of all the vehicles
      */
-    NeedCollector collectNeeds() {
+    public NeedCollector collectNeeds() {
         NeedCollector collector = new NeedCollector();
         for (Vehicle vehicle : vehicles) {
             vehicle.reportNeeds(collector);
diff --git a/src/uebung05/logistics/NeedCollector.java b/src/uebung05/logistics/NeedCollector.java
index 0aec1bc..4e7427f 100755
--- a/src/uebung05/logistics/NeedCollector.java
+++ b/src/uebung05/logistics/NeedCollector.java
@@ -1,7 +1,7 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 import java.util.HashMap;
 import java.util.Map;
diff --git a/src/uebung05/logistics/Tank.java b/src/uebung05/logistics/Tank.java
index 489875a..cb8a2df 100755
--- a/src/uebung05/logistics/Tank.java
+++ b/src/uebung05/logistics/Tank.java
@@ -1,13 +1,13 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.material.BulletBelts;
-import logistics.material.LiterDiesel;
-import logistics.material.ShellBatches;
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
-import logistics.storage.FloatStorage;
-import logistics.storage.IntStorage;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.LiterDiesel;
+import uebung05.logistics.material.ShellBatches;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
+import uebung05.logistics.storage.FloatStorage;
+import uebung05.logistics.storage.IntStorage;
 
 /**
  * The Tank class represents a tank in the logistics system.
diff --git a/src/uebung05/logistics/Truck.java b/src/uebung05/logistics/Truck.java
index 83deb6e..7b47e12 100755
--- a/src/uebung05/logistics/Truck.java
+++ b/src/uebung05/logistics/Truck.java
@@ -1,12 +1,12 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.material.BulletBelts;
-import logistics.material.LiterDiesel;
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
-import logistics.storage.FloatStorage;
-import logistics.storage.IntStorage;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.LiterDiesel;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
+import uebung05.logistics.storage.FloatStorage;
+import uebung05.logistics.storage.IntStorage;
 
 /**
  * The Truck class represents a truck in the logistics system.
diff --git a/src/uebung05/logistics/Vehicle.java b/src/uebung05/logistics/Vehicle.java
index 6ae0002..04a3735 100755
--- a/src/uebung05/logistics/Vehicle.java
+++ b/src/uebung05/logistics/Vehicle.java
@@ -1,11 +1,11 @@
-package logistics;
+package uebung05.logistics;
 
-import logistics.material.Grease;
-import logistics.material.Oil;
-import logistics.quantities.FloatUnit;
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
-import logistics.storage.IntStorage;
+import uebung05.logistics.material.Grease;
+import uebung05.logistics.material.Oil;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
+import uebung05.logistics.storage.IntStorage;
 
 /**
  * The Vehicle abstract class represents a vehicle in the logistics system.
diff --git a/src/uebung05/logistics/material/BulletBelts.java b/src/uebung05/logistics/material/BulletBelts.java
index 7df7b9b..45e166c 100755
--- a/src/uebung05/logistics/material/BulletBelts.java
+++ b/src/uebung05/logistics/material/BulletBelts.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 /**
  * The BulletBelts class represents a unit of measurement for 7.62 bullets.
@@ -11,7 +11,7 @@ import logistics.quantities.IntUnit;
  */
 public class BulletBelts implements IntUnit {
 
-    private static BulletBelts INSTANCE;
+    public static BulletBelts INSTANCE;
 
     private BulletBelts() {}
 
diff --git a/src/uebung05/logistics/material/Grease.java b/src/uebung05/logistics/material/Grease.java
index d752195..c0eef9c 100755
--- a/src/uebung05/logistics/material/Grease.java
+++ b/src/uebung05/logistics/material/Grease.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 /**
  * The Grease class represents a unit of measurement for grease.
@@ -11,7 +11,7 @@ import logistics.quantities.IntUnit;
  */
 public class Grease implements IntUnit {
 
-    private static Grease INSTANCE;
+    public static Grease INSTANCE;
 
     private Grease() {}
 
diff --git a/src/uebung05/logistics/material/LiterDiesel.java b/src/uebung05/logistics/material/LiterDiesel.java
index 2e16e58..31f638d 100755
--- a/src/uebung05/logistics/material/LiterDiesel.java
+++ b/src/uebung05/logistics/material/LiterDiesel.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.FloatUnit;
 
 /**
  * The LiterDiesel class represents a unit of measurement for diesel fuel.
@@ -11,7 +11,7 @@ import logistics.quantities.FloatUnit;
  */
 public class LiterDiesel implements FloatUnit {
 
-    private static LiterDiesel INSTANCE;
+    public static LiterDiesel INSTANCE;
 
     private LiterDiesel() {}
 
diff --git a/src/uebung05/logistics/material/MetGallonsKerosene.java b/src/uebung05/logistics/material/MetGallonsKerosene.java
index a50399c..b8e7f1c 100755
--- a/src/uebung05/logistics/material/MetGallonsKerosene.java
+++ b/src/uebung05/logistics/material/MetGallonsKerosene.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.FloatUnit;
 
 /**
  * The MetGallonsKerosene class represents a unit of measurement for kerosene.
@@ -11,7 +11,7 @@ import logistics.quantities.FloatUnit;
  */
 public class MetGallonsKerosene implements FloatUnit {
 
-    private static MetGallonsKerosene INSTANCE;
+    public static MetGallonsKerosene INSTANCE;
 
     private MetGallonsKerosene() {}
 
diff --git a/src/uebung05/logistics/material/Oil.java b/src/uebung05/logistics/material/Oil.java
index 4f991b1..6bb60ae 100755
--- a/src/uebung05/logistics/material/Oil.java
+++ b/src/uebung05/logistics/material/Oil.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 /**
  * The Oil class represents a unit of measurement for oil.
@@ -11,7 +11,7 @@ import logistics.quantities.IntUnit;
  */
 public class Oil implements IntUnit {
 
-    private static Oil INSTANCE;
+    public static Oil INSTANCE;
 
     private Oil() {}
 
diff --git a/src/uebung05/logistics/material/RocketPods.java b/src/uebung05/logistics/material/RocketPods.java
index 44f07b3..a3a07d6 100755
--- a/src/uebung05/logistics/material/RocketPods.java
+++ b/src/uebung05/logistics/material/RocketPods.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 /**
  * The RocketPods class represents a unit of measurement for 70mm rocket pods.
@@ -11,7 +11,7 @@ import logistics.quantities.IntUnit;
  */
 public class RocketPods implements IntUnit {
 
-    private static RocketPods INSTANCE;
+    public static RocketPods INSTANCE;
 
     private RocketPods() {}
 
diff --git a/src/uebung05/logistics/material/ShellBatches.java b/src/uebung05/logistics/material/ShellBatches.java
index ee6f820..0f14656 100755
--- a/src/uebung05/logistics/material/ShellBatches.java
+++ b/src/uebung05/logistics/material/ShellBatches.java
@@ -1,6 +1,6 @@
-package logistics.material;
+package uebung05.logistics.material;
 
-import logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.IntUnit;
 
 /**
  * The ShellBatches class represents a unit of measurement for 120mm shell batches.
@@ -11,7 +11,7 @@ import logistics.quantities.IntUnit;
  */
 public class ShellBatches implements IntUnit {
 
-    private static ShellBatches INSTANCE;
+    public static ShellBatches INSTANCE;
 
     private ShellBatches() {}
 
diff --git a/src/uebung05/logistics/quantities/FloatUnit.java b/src/uebung05/logistics/quantities/FloatUnit.java
index 69d5cf3..1d60f93 100755
--- a/src/uebung05/logistics/quantities/FloatUnit.java
+++ b/src/uebung05/logistics/quantities/FloatUnit.java
@@ -1,4 +1,4 @@
-package logistics.quantities;
+package uebung05.logistics.quantities;
 
 /**
  * @author Nikolaus Köberlein
diff --git a/src/uebung05/logistics/quantities/IntUnit.java b/src/uebung05/logistics/quantities/IntUnit.java
index 1b6ed1f..27da450 100755
--- a/src/uebung05/logistics/quantities/IntUnit.java
+++ b/src/uebung05/logistics/quantities/IntUnit.java
@@ -1,4 +1,4 @@
-package logistics.quantities;
+package uebung05.logistics.quantities;
 
 /**
  * @author Nikolaus Köberlein
diff --git a/src/uebung05/logistics/quantities/NeedCollector.java b/src/uebung05/logistics/quantities/NeedCollector.java
index 00b0597..8edf4e8 100755
--- a/src/uebung05/logistics/quantities/NeedCollector.java
+++ b/src/uebung05/logistics/quantities/NeedCollector.java
@@ -1,12 +1,12 @@
-package logistics.quantities;
+package uebung05.logistics.quantities;
 
-import logistics.material.BulletBelts;
-import logistics.material.Grease;
-import logistics.material.LiterDiesel;
-import logistics.material.MetGallonsKerosene;
-import logistics.material.Oil;
-import logistics.material.RocketPods;
-import logistics.material.ShellBatches;
+import uebung05.logistics.material.BulletBelts;
+import uebung05.logistics.material.Grease;
+import uebung05.logistics.material.LiterDiesel;
+import uebung05.logistics.material.MetGallonsKerosene;
+import uebung05.logistics.material.Oil;
+import uebung05.logistics.material.RocketPods;
+import uebung05.logistics.material.ShellBatches;
 
 import java.util.HashMap;
 import java.util.Map;
diff --git a/src/uebung05/logistics/quantities/Unit.java b/src/uebung05/logistics/quantities/Unit.java
index 258b194..db0f6e5 100755
--- a/src/uebung05/logistics/quantities/Unit.java
+++ b/src/uebung05/logistics/quantities/Unit.java
@@ -1,4 +1,4 @@
-package logistics.quantities;
+package uebung05.logistics.quantities;
 
 /**
  * @author Nikolaus Köberlein
diff --git a/src/uebung05/logistics/storage/FloatStorage.java b/src/uebung05/logistics/storage/FloatStorage.java
index 9c42a30..f57805c 100755
--- a/src/uebung05/logistics/storage/FloatStorage.java
+++ b/src/uebung05/logistics/storage/FloatStorage.java
@@ -1,7 +1,7 @@
-package logistics.storage;
+package uebung05.logistics.storage;
 
-import logistics.quantities.FloatUnit;
-import logistics.quantities.NeedCollector;
+import uebung05.logistics.quantities.FloatUnit;
+import uebung05.logistics.quantities.NeedCollector;
 
 /**
  * The FloatStorage class represents a floating-point storage for a specific FloatUnit object.
diff --git a/src/uebung05/logistics/storage/IntStorage.java b/src/uebung05/logistics/storage/IntStorage.java
index 0092f91..435f3e5 100755
--- a/src/uebung05/logistics/storage/IntStorage.java
+++ b/src/uebung05/logistics/storage/IntStorage.java
@@ -1,7 +1,7 @@
-package logistics.storage;
+package uebung05.logistics.storage;
 
-import logistics.quantities.IntUnit;
-import logistics.quantities.NeedCollector;
+import uebung05.logistics.quantities.IntUnit;
+import uebung05.logistics.quantities.NeedCollector;
 
 /**
  * The IntStorage class represents an integer storage for a specific IntUnit object.
diff --git a/src/uebung07/quantities/plain/TimeUnit.java b/src/uebung07/quantities/plain/TimeUnit.java
deleted file mode 100644
index 9e4523b..0000000
--- a/src/uebung07/quantities/plain/TimeUnit.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package uebung07.quantities.plain;
-
-public class TimeUnit extends Unit{
-
-}
diff --git a/src/uebung09/chess/Board.java b/src/uebung09/chess/Board.java
index c14dd7f..b0744ce 100644
--- a/src/uebung09/chess/Board.java
+++ b/src/uebung09/chess/Board.java
@@ -9,7 +9,7 @@ import uebung09.iterator.Array2dIterator;
 
 public class Board implements Iterable<Piece>{
     private final Piece[][] field = new Piece[8][8];
-    //private final List<Piece> pieces = new ArrayList<>();
+    private final List<Piece> pieces = new ArrayList<>();
 
 
     void add(Piece piece) {
@@ -42,7 +42,7 @@ public class Board implements Iterable<Piece>{
     }
 
     public void check() {
-        for (Piece p1 : iterator()) {
+        for (Piece p1 : pieces) {
             System.out.println(p1.toString());
             for (Piece p2 : pieces)
                 if (p1 != p2)
diff --git a/src/uebung09/iterator/Array2dIterator.java b/src/uebung09/iterator/Array2dIterator.java
index 7ca27e3..8cb6fa4 100644
--- a/src/uebung09/iterator/Array2dIterator.java
+++ b/src/uebung09/iterator/Array2dIterator.java
@@ -1,39 +1,70 @@
 package uebung09.iterator;
 
+import java.util.ArrayList;
 import java.util.Iterator;
 
 public class Array2dIterator<T> implements Iterator<T>{
 
     private T[][] array;
+    private ArrayList<T> list;
     private int index = 0;
 
     public Array2dIterator(T[][] array) {
         this.array = array;
+        list = flatten();
     }
 
     @Override
     public boolean hasNext() {
-        for (int i = 0; i < array.length; i++) {
-            for (int j = 0; j < array[i].length; j++) {
-                if (array[i][j+1] != null) {
-                    return true;
-                }
-                if (array[i+1][j] != null) {
-                    return true;
-                }
-            }
+        // for (int i = 0; i < array.length; i++) {
+        //     for (int j = 0; j < array[i].length; j++) {
+        //         if (array[i][j+1] != null) {
+        //             return true;
+        //         }
+        //         if (array[i+1][j] != null) {
+        //             return true;
+        //         }
+        //     }
+        // }
+        // return false;
+
+        
+        if (list.get(index+1) != null) {
+            return true;
+        } else {
+            return false;
         }
-        return false;
     }
 
     @Override
     public T next() {
-        for (int i = 0; i < array.length; i++) {
-            for (int j = 0; j < array[i].length; j++) {
-                
-            }
-        }
-        return null;
+    //     for (int i = 0; i < array.length; i++) {
+    //         for (int j = 0; j < array[i].length; j++) {
+    //             if (array[i][j+1] != null) {
+    //                 return array[i][j+1];
+    //             }
+
+    //         }
+    //         if (array[i+1][0] != null) {
+    //             return array[i+1][0];
+    //         }
+    //     }
+    //     return null;
+
+
+        return list.get(index++);
+
     }
 
+    private ArrayList<T> flatten(){
+        ArrayList<T> list = new ArrayList<>();    
+
+        for (int i = 0; i < array.length; i++) {
+            for (int j = 0; j < array[i].length; j++) {
+                list.add(array[i][j]);
+            }
+        }
+
+        return list;
+    }
 }