BooleanNot

Beschreibung

Die Funktion BooleanNot (!) testet ob eine Aussage wahr oder falsch ist.

Syntax

 !a
 not(a)

Parameter

• a - boolean

Return Value

• Gibt einen Boolean zurück.

Beispiele

 !0    --> True
 !1    --> False

 !(3+4==6)    --> True

JUnit Tests

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@Test
public void testBooleanNot1() {
	assertEquals(1, Evaluator.getNumberResult("!0", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNot2() {
	assertEquals(0, Evaluator.getNumberResult("!1", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNot3() {
	assertEquals(true, Evaluator.getBooleanResult("!(3+4==6)", exerciseVariableMap, fillInVariableMap));
}

@Test
public void testBooleanNotWithInput1() {
	assertEquals(1, Evaluator.getNumberResult("![pos=1]", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNotWithInput2() {
	assertEquals(0, Evaluator.getNumberResult("![pos=2]", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNotWithVariables1() {
	assertEquals(1, Evaluator.getNumberResult("![var=a]", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNotWithVariables2() {
	assertEquals(0, Evaluator.getNumberResult("![var=b]", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNotWithExpressions1() {
	assertEquals(0, Evaluator.getNumberResult("!!0", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testBooleanNotWithExpressions2() {
	assertEquals(1, Evaluator.getNumberResult("!!!0", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test(expected=FunctionInvalidArgumentTypeException.class)
public void testBooleanNotWithWrongInputCharacter() {
	Evaluator.getNumberResult("!'a'", exerciseVariableMap, fillInVariableMap);
	fail();
}

Hinweise

• Wenn der Boolean b true ist gibt !b false zurück.