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.

Achtung: In XML Dateien muss das Zeichen & durch &amp ; ersetz werden!

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

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@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();
}

Hinweise

• erwartet zwei boolsche Ausdrücke