BooleanAnd

Beschreibung

Die Funktion BooleanAnd ("&&") aus der Bool'schen Algebra vergleicht zwei Aussagen auf "true" oder "false". Der Ausdruck x && y gibt true zurück, wenn x und y beide true sind, ansonsten wird immer false zurückgegeben.

Syntax

x && y

Parameter

• x - boolean
• y - boolean

Return Value

• Gibt einen Boolean zurück.

Beispiele

 1 && 1    --> true
 0 && 1    --> false
 1 && 0    --> false
 0 && 0    --> false

 (2+4==6) && (3+3==6)    --> true

JUnit Tests

@Test public void testBooleanAnd1() { assertTrue(Evaluator.getBooleanResult("1 && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAnd2() { assertTrue(!Evaluator.getBooleanResult("0 && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAnd3() { assertTrue(!Evaluator.getBooleanResult("1 && 0", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAnd4() { assertTrue(!Evaluator.getBooleanResult("0 && 0", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAnd5() { assertEquals(true, Evaluator.getBooleanResult("(2+4==6) && (3+3==6)", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithVariables1() { assertTrue(Evaluator.getBooleanResult("[pos=2] && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithVariables2() { assertFalse(Evaluator.getBooleanResult("0 && [pos=2]", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithInput1() { assertTrue(Evaluator.getBooleanResult("[var=b] && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithInput2() { assertFalse(Evaluator.getBooleanResult("0 && [var=a]", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation1() { assertFalse(Evaluator.getBooleanResult("1 && (1 && 0)", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation2() { assertTrue(Evaluator.getBooleanResult("1 && (1 && 1)", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation3() { assertFalse(Evaluator.getBooleanResult("1 && (1 && (1 && (1 &&(1 && 0))))", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation4() { assertTrue(Evaluator.getBooleanResult("1 && (1 && (1 && (1 && (1 && 1))))", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation5() { assertFalse(Evaluator.getBooleanResult("((((0 && 1) && 1) && 1) && 1) && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithEncapsulation6() { assertTrue(Evaluator.getBooleanResult("((((1 && 1) && 1) && 1) && 1) && 1", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithDifferentNumbers1() { assertTrue(Evaluator.getBooleanResult("2 && 2", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithDifferentNumbers2() { assertFalse(Evaluator.getBooleanResult("-1 && 2", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithDifferentNumbers3() { assertFalse(Evaluator.getBooleanResult("-1 && 0", exerciseVariableMap, fillInVariableMap)); }

@Test public void testBooleanAndWithDifferentNumbers4() { assertTrue(Evaluator.getBooleanResult("2.34 && 1.11", exerciseVariableMap, fillInVariableMap)); }

@Test(expected = ParserException.class) public void testBooleanAndWithWrongInputCharacter() { Evaluator.getBooleanResult("1 && ab", exerciseVariableMap, fillInVariableMap); fail(); }

@Test(expected = FunctionInvalidArgumentTypeException.class) public void testBooleanAndWithWrongInputString() { Evaluator.getBooleanResult("1 && 'a'", exerciseVariableMap, fillInVariableMap); fail(); }

@Test(expected = UndefinedExerciseVariableException.class) public void testBooleanAndMissingExcerciseVariable() { Evaluator.getBooleanResult("[var=j] && 1", exerciseVariableMap, fillInVariableMap); fail(); }

@Test(expected = UndefinedFillInVariableException.class) public void testBooleanAndWithMissingInput() { Evaluator.getBooleanResult("[pos=42] && 1", exerciseVariableMap, fillInVariableMap); fail(); } </syntaxhighlight>

Hinweise

• erwartet zwei boolsche Ausdrücke