CountBasicOperations

Beschreibung

Die Funktion countBasicOperations zählt die Anzahl der Basisoperationen, die in einem Term verwendet werden. Die Funktion erwartet einen String und gibt eine Zahl zurück.

Syntax

countBasicOperations(Expression term)

Parameter

• term - Term dessen Basisoperationen gezählt werden

Return Value

• Gibt eine Ganzzahl zurück

Beispiele

countBasicOperations('2*3+5')   --> returns 2

JUnit Tests

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@Test
public void testCountBasicOperations1() {
	assertEquals(4,
			Evaluator.getNumberResult("countBasicOperations('2+3*5/10-3')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testCountBasicOperations2() {
	assertEquals(0,
			Evaluator.getNumberResult("countBasicOperations('-2.1')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperations3() {
	assertEquals(1,
			Evaluator.getNumberResult("countBasicOperations('-32+12')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testCountBasicOperations4() {
	assertEquals(2,
			Evaluator.getNumberResult("countBasicOperations('0+0-0')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testCountBasicOperations5() {
	assertEquals(1, Evaluator.getNumberResult("countBasicOperations('+', '-32+12-5-4/2-2*3')", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperations6() {
	assertEquals(3, Evaluator.getNumberResult("countBasicOperations('-', '-32+12-5-4/2-2*3')", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperations7() {
	assertEquals(1, Evaluator.getNumberResult("countBasicOperations('*', '-32+12-5-4/2-2*3')", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperations8() {
	assertEquals(1, Evaluator.getNumberResult("countBasicOperations('/', '-32+12-5-4/2-2*3')", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperationsWithInput() {
	assertEquals(2, Evaluator.getNumberResult("countBasicOperations('+', '[pos=2]+[pos=2]+[pos=2]')",
			exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testCountBasicOperationsWithVariables() {
	assertEquals(2, Evaluator.getNumberResult("countBasicOperations('*', '[var=b]*[var=b]*[var=b]')",
			exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test(expected = ParserException.class)
public void testCountBasicOperationsWithWrongInputTwoCharacters() {
	Evaluator.getNumberResult("countBasicOperations(ab, ab)", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test//(expected = FunctionInvalidNumberOfArgumentsException.class) //This test works now, because 5 is seen as Expression! with 0 Basic Operators
public void testCountBasicOperationsWithWrongInputOneRational() {
	assertEquals(0, Evaluator.getNumberResult("countBasicOperations(5)", exerciseVariableMap, fillInVariableMap), 0);
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testCountBasicOperationsWithTwoRationalArguments() {
	Evaluator.getNumberResult("countBasicOperations(2, 2)", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testCountBasicOperationsThreeArguments() {
	Evaluator.getNumberResult("countBasicOperations('a', 'a', 'a')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = UndefinedExerciseVariableException.class)
public void testCountBasicOperationsWithMissingExerciseVariable() {
	Evaluator.getNumberResult("countBasicOperations('[var=j]', '2+1')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = UndefinedFillInVariableException.class)
public void testCountBasicOperationsWithMissingInput() {
	Evaluator.getNumberResult("countBasicOperations('[pos=42]', '4-1*8')", exerciseVariableMap, fillInVariableMap);
	fail();
}

Hinweise

• Basisoperationen sind hierbei Addition, Subtraktion, Multiplikation und Division.