NumberOfVariables: Unterschied zwischen den Versionen

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<syntaxhighlight lang="java" class="mw-collapsible mw-collapsed" id="mw-customcollapsible-myDivision">
 
<syntaxhighlight lang="java" class="mw-collapsible mw-collapsed" id="mw-customcollapsible-myDivision">
@Before
+
@BeforeClass
public void beforeTest() {
+
public static void beforeTest() throws FunctionNotImplementedException, UndefinedFillInVariableException,
  placeFillInVariable(1, OMParser.parse("0"));
+
UndefinedExerciseVariableException, ParserException, ErroneousFillInVariableException, ErroneousExerciseVariableException {
  placeFillInVariable(2, OMParser.parse("3"));
+
numberOfVariablesFillInVariableMap.put(1, ExpressionParser.parse("0", null, null));
  placeFillInVariable(5, OMParser.parse("x"));
+
numberOfVariablesFillInVariableMap.put(2, ExpressionParser.parse("3", null, null));
+
numberOfVariablesFillInVariableMap.put(3, ExpressionParser.parse("x", null, null));
  placeExerciseVariable("a", OMParser.parse("x"));
+
 
  placeExerciseVariable("b", OMParser.parse("3"));
+
numberOfVariablesExerciseVariableMap.put("a", ExpressionParser.parse("x", null, null));
 +
numberOfVariablesExerciseVariableMap.put("b", ExpressionParser.parse("3", null, null));
 
}
 
}
+
 
 
@Test
 
@Test
public void testNumberOfVariables() {
+
public void testNumberOfVariables1() {
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2x+3a-x+2b')"));
+
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2x+3a-x+2b')",
  assertTrue(1 == getEvaluator().getNumberResult("numberOfVariables('2x+3x-x+2x')"));
+
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 
  assertTrue(4 == getEvaluator().getNumberResult("numberOfVariables('sin(i)*E^(e)+ q/sqrt(s)')"));
 
  assertTrue(0 == getEvaluator().getNumberResult("numberOfVariables('5')"));
 
 
}
 
}
+
 
 
@Test
 
@Test
public void testNumberOfVariablesWithInput() {
+
public void testNumberOfVariables2() {
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2x+3a-x+2b')"));
+
assertEquals(1, Evaluator.getNumberResult("numberOfVariables('2x+3x-x+2x')",
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2[pos=5]+3a-[pos=5]+2b')"));
+
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2[pos=5]+3a-[pos=5]+2b')"));
 
  assertTrue(2 == getEvaluator().getNumberResult("numberOfVariables('2[pos=5]+3[pos=5]-[pos=5]+2b')"));
 
 
}
 
}
+
 
 
@Test
 
@Test
public void testNumberOfVariablesWithVariables() {
+
public void testNumberOfVariables3() {
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2x+3a-x+2b')"));
+
assertEquals(5, Evaluator.getNumberResult("numberOfVariables('sin(i)*E^(e)+ q/sqrt(s)')",
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')"));
+
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
  assertTrue(3 == getEvaluator().getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')"));
 
  assertTrue(2 == getEvaluator().getNumberResult("numberOfVariables('2[var=a]+3[var=a]-[var=a]+2b')"));
 
 
}
 
}
+
 
 
@Test
 
@Test
public void testNumberOfVariablesWithONECharacter(){
+
public void testNumberOfVariables4() {
  assertTrue(1 == getEvaluator().getNumberResult("numberOfVariables(a)"));
+
assertEquals(0, Evaluator.getNumberResult("numberOfVariables('5')", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap), 0.0);
 
}
 
}
+
 
@Test(expected=InvalidCASFunctionArgumentException.class)
+
@Test
public void testNumberOfVariablesWithEmptyStringArguments(){
+
public void testNumberOfVariablesWithInput1() {
  getEvaluator().getNumberResult("numberOfVariables('')");
+
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*x+3*a-x+2*b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithInput2() {
 +
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*a-[pos=3]+2*b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithInput3() {
 +
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*a-[pos=3]+2*b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithInput4() {
 +
assertEquals(2, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*[pos=3]-[pos=3]+2*b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithVariables1() {
 +
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2x+3a-x+2b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithVariables2() {
 +
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithVariables3() {
 +
assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithVariables4() {
 +
assertEquals(2, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3[var=a]-[var=a]+2b')",
 +
numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithONECharacter() {
 +
assertEquals(1, Evaluator.getNumberResult("numberOfVariables(a)", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap), 0.0);
 +
}
 +
 
 +
@Test
 +
public void testNumberOfVariablesWithEmptyStringArguments() {
 +
Evaluator.getNumberResult("numberOfVariables('')", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap);
 
}
 
}
+
 
@Test(expected=InvalidCASFunctionArgumentException.class)
+
@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testNumberOfVariablesWithEmptyArgument(){
+
public void testNumberOfVariablesWithEmptyArgument() {
  getEvaluator().getNumberResult("numberOfVariables()");
+
Evaluator.getNumberResult("numberOfVariables()", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap);
 +
fail();
 
}
 
}
+
 
@Test(expected=UndefinedExerciseVariableException.class)
+
@Test(expected = UndefinedExerciseVariableException.class)
public void testNumberOfVariablesWithMissingExerciseVariable(){
+
public void testNumberOfVariablesWithMissingExerciseVariable() {
  getEvaluator().getNumberResult("numberOfVariables('[var=j]')");
+
Evaluator.getNumberResult("numberOfVariables('[var=j]')", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap);
 +
fail();
 
}
 
}
+
 
@Test(expected=UndefinedFillInVariableException.class)
+
@Test(expected = UndefinedFillInVariableException.class)
public void testNumberOfVariablesWithMissingInput(){
+
public void testNumberOfVariablesWithMissingInput() {
  getEvaluator().getNumberResult("numberOfVariables('[pos=42]')");
+
Evaluator.getNumberResult("numberOfVariables('[pos=42]')", numberOfVariablesExerciseVariableMap,
 +
numberOfVariablesFillInVariableMap);
 +
fail();
 
}
 
}
 
</syntaxhighlight>
 
</syntaxhighlight>
 +
 
===Hinweise===
 
===Hinweise===
  
 
[[Kategorie:Evaluatorfunktion]]
 
[[Kategorie:Evaluatorfunktion]]

Version vom 19. September 2017, 07:36 Uhr

Beschreibung

Die Funktion numberOfVariables zählt die Variablen in einem Ausdruck. Sie erwartet einen String und gibt einen numerischen Ausdruck zurück.

Syntax

numberOfVariables(Expression term)

Parameter

  • term - der Ausdruck dessen Variablen gezählt werden sollen

Return Value

  • Gibt einen numerischen Ausdruck zurück.

Beispiele

numberOfVariables('2x+3a-2b')    --> returns 3

JUnit Tests

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@BeforeClass
public static void beforeTest() throws FunctionNotImplementedException, UndefinedFillInVariableException,
		UndefinedExerciseVariableException, ParserException, ErroneousFillInVariableException, ErroneousExerciseVariableException {
	numberOfVariablesFillInVariableMap.put(1, ExpressionParser.parse("0", null, null));
	numberOfVariablesFillInVariableMap.put(2, ExpressionParser.parse("3", null, null));
	numberOfVariablesFillInVariableMap.put(3, ExpressionParser.parse("x", null, null));

	numberOfVariablesExerciseVariableMap.put("a", ExpressionParser.parse("x", null, null));
	numberOfVariablesExerciseVariableMap.put("b", ExpressionParser.parse("3", null, null));
}

@Test
public void testNumberOfVariables1() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2x+3a-x+2b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariables2() {
	assertEquals(1, Evaluator.getNumberResult("numberOfVariables('2x+3x-x+2x')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariables3() {
	assertEquals(5, Evaluator.getNumberResult("numberOfVariables('sin(i)*E^(e)+ q/sqrt(s)')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariables4() {
	assertEquals(0, Evaluator.getNumberResult("numberOfVariables('5')", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithInput1() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*x+3*a-x+2*b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithInput2() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*a-[pos=3]+2*b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithInput3() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*a-[pos=3]+2*b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithInput4() {
	assertEquals(2, Evaluator.getNumberResult("numberOfVariables('2*[pos=3]+3*[pos=3]-[pos=3]+2*b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithVariables1() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2x+3a-x+2b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithVariables2() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithVariables3() {
	assertEquals(3, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3a-[var=a]+2b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithVariables4() {
	assertEquals(2, Evaluator.getNumberResult("numberOfVariables('2[var=a]+3[var=a]-[var=a]+2b')",
			numberOfVariablesExerciseVariableMap, numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithONECharacter() {
	assertEquals(1, Evaluator.getNumberResult("numberOfVariables(a)", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap), 0.0);
}

@Test
public void testNumberOfVariablesWithEmptyStringArguments() {
	Evaluator.getNumberResult("numberOfVariables('')", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testNumberOfVariablesWithEmptyArgument() {
	Evaluator.getNumberResult("numberOfVariables()", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap);
	fail();
}

@Test(expected = UndefinedExerciseVariableException.class)
public void testNumberOfVariablesWithMissingExerciseVariable() {
	Evaluator.getNumberResult("numberOfVariables('[var=j]')", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap);
	fail();
}

@Test(expected = UndefinedFillInVariableException.class)
public void testNumberOfVariablesWithMissingInput() {
	Evaluator.getNumberResult("numberOfVariables('[pos=42]')", numberOfVariablesExerciseVariableMap,
			numberOfVariablesFillInVariableMap);
	fail();
}

Hinweise