LessThanOrEqual

Beschreibung

Die Funktion lessThanOrEqual vergleicht zwei Ausdrücke der Größe nach miteinander und gibt einen Wahrheitswert zurück, abhängig davon, ob der linksstehende Ausdruck kleiner-gleich dem rechtsstehenden Ausdruck ist.

Syntax

a <= b

Parameter

• a - Gleitkommazahl
• b - Gleitkommazahl

Return Value

• Gibt einen Boolean zurück.

  Wenn der linke Ausdruck kleiner-gleich dem rechten Ausdruck ist, wird true zurückgegeben, andernfalls false.

Beispiele

<math>2 <= 4</math>    --> returns true

<math>4 <= 4</math>    --> returns true

<math>3 <= 2</math>    --> returns false

JUnit Tests

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@BeforeClass
public static void beforeTest() throws FunctionNotImplementedException, UndefinedFillInVariableException,
		UndefinedExerciseVariableException, ParserException, ErroneousFillInVariableException, ErroneousExerciseVariableException {
	lessThanOrEqualFillInVariableMap.put(1, ExpressionParser.parse("3", null, null));
	lessThanOrEqualFillInVariableMap.put(2, ExpressionParser.parse("1", null, null));
	lessThanOrEqualFillInVariableMap.put(3, ExpressionParser.parse("2.5", null, null));

	lessThanOrEqualExerciseVariableMap.put("a", ExpressionParser.parse("8", null, null));
	lessThanOrEqualExerciseVariableMap.put("b", ExpressionParser.parse("25", null, null));
	lessThanOrEqualExerciseVariableMap.put("c", ExpressionParser.parse("2.5", null, null));
}

@Test
public void testLessThanOrEqual1() {
	assertTrue(!Evaluator.getBooleanResult("22<=8", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual2() {
	assertTrue(Evaluator.getBooleanResult("8<=8", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual3() {
	assertTrue(Evaluator.getBooleanResult("2<=8", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual4() {
	assertTrue(Evaluator.getBooleanResult("8<=9", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual5() {
	assertTrue(!Evaluator.getBooleanResult("45<=7", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual6() {
	assertTrue(Evaluator.getBooleanResult("7<=7", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual7() {
	assertTrue(Evaluator.getBooleanResult("-0.2<=0", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqual8() {
	assertTrue(Evaluator.getBooleanResult("0<=0", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables1() {
	assertTrue(!Evaluator.getBooleanResult("22<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables2() {
	assertTrue(Evaluator.getBooleanResult("3<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables3() {
	assertTrue(Evaluator.getBooleanResult("2<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables4() {
	assertTrue(Evaluator.getBooleanResult("8<=[var=b]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}
	
@Test
public void testLessThanOrEqualWithVariables5() {
	assertTrue(Evaluator.getBooleanResult("8<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables6() {
	assertTrue(!Evaluator.getBooleanResult("[var=b]<=23", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables7() {
	assertTrue(Evaluator.getBooleanResult("[var=a]<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables8() {
	assertTrue(Evaluator.getBooleanResult("[var=a]<=[var=b]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithVariables9() {
	assertTrue(!Evaluator.getBooleanResult("[var=b]<=[var=a]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput1() {
	assertTrue(!Evaluator.getBooleanResult("22<=[pos=1]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput2() {
	assertTrue(Evaluator.getBooleanResult("3<=[pos=1]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput3() {
	assertTrue(Evaluator.getBooleanResult("2<=[pos=1]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput4() {
	assertTrue(Evaluator.getBooleanResult("3<=[pos=1]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput5() {
	assertTrue(Evaluator.getBooleanResult("[pos=2]<=5", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput6() {
	assertTrue(!Evaluator.getBooleanResult("5<=[pos=2]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithInput7() {
	assertTrue(!Evaluator.getBooleanResult("[pos=1]<=[pos=2]", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithEncapsulation1() {
	assertTrue(Evaluator.getBooleanResult("1 <= (1 <= 2)", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithEncapsulation2() {
	assertTrue(Evaluator.getBooleanResult("1 <= (1 <= (0 <= 1))", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithEncapsulation3() {
	assertTrue(Evaluator.getBooleanResult("0 <= (0 <= (0 <= (0 <= (0 <= 1))))", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test
public void testLessThanOrEqualWithEncapsulation4() {
	assertTrue(Evaluator.getBooleanResult("((((1 <= 1) <= 1) <= 1) <= 1) <= 1", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap));
}

@Test(expected=ParserException.class)
public void testLessThanOrEqualWithWrongInputCharacter() {
	Evaluator.getBooleanResult("6 <= ab", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap);
	fail();
}

@Test(expected=FunctionInvalidArgumentTypeException.class)
public void testLessThanOrEqualWithWrongInputString() {
	Evaluator.getBooleanResult("6 <= 'a'", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap);
	fail();
}

@Test (expected=UndefinedExerciseVariableException.class)
public void testLessThanOrEqualWithMissingExcerciseVariable() {
	Evaluator.getBooleanResult("[var=j] <= 2", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap);
	fail();
}

@Test (expected=UndefinedFillInVariableException.class)
public void testLessThanOrEqualWithMissingInput() {
	Evaluator.getBooleanResult("[pos=42] <= 2", lessThanOrEqualExerciseVariableMap, lessThanOrEqualFillInVariableMap);
	fail();
}