CountNodes

Beschreibung

Die Funktion countNodes ruft die Methode getNumberOfNodes des entsprechenden OpenMathObjektes auf und zählt die Knoten des OpenMathObjektes. (In den implementierten OpenMathObjekten ist jedoch diese Funktion nicht implementiert)

Syntax

countNodes(Ausdruck argument)

Parameter

• argument - die Expression, dessen Knoten gezählt werden sollen

Return Value

• Gibt die Anzahl der Knoten zurück

Beispiele

Benutzung mit Variablen

countNodes([pos=1])
countNodes([var=a])

JUnit Tests

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@Test 
public void testCountNodes1() {
	assertEquals(4, Evaluator.getNumberResult("countNodes(2+2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodes2() {
	assertEquals(7, Evaluator.getNumberResult("countNodes(3*(2+2))", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodes3() {
	assertNotEquals(1, Evaluator.getNumberResult("countNodes(2+2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodesWithInput1() {
	assertEquals(1, Evaluator.getNumberResult("countNodes([pos=2])", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodesWithInput2() {
	assertEquals(7, Evaluator.getNumberResult("countNodes(3*([pos=1]+2))", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodesWithVariables1() {
	assertEquals(1, Evaluator.getNumberResult("countNodes([var=a])", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodesWithVariables2() {
	assertEquals(7, Evaluator.getNumberResult("countNodes(3*([var=a]+2))", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test 
public void testCountNodesWithExpressions() {
	assertEquals(6, Evaluator.getNumberResult("countNodes('countNodes(2+2)')", exerciseVariableMap, fillInVariableMap), 0.0);
}

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

@Test (expected=FunctionInvalidNumberOfArgumentsException.class)
public void testCountNodesWithTwoArguments() {
	Evaluator.getNumberResult("countNodes(3, 2)", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test (expected=FunctionInvalidNumberOfArgumentsException.class)
public void testCountNodesWithThreeArguments() {
	Evaluator.getNumberResult("countNodes(1, 2, 3)", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test (expected=UndefinedExerciseVariableException.class)
public void testCountNodesWithMissingExcerciseVariable() {
	Evaluator.getNumberResult("countNodes('[var=j]')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test (expected=UndefinedFillInVariableException.class)
public void testCountNodesWithMissingInput() {
	Evaluator.getNumberResult("countNodes('[pos=42]')", exerciseVariableMap, fillInVariableMap);
	fail();
}