GCD

Beschreibung

Die Funktion gcd berechnet den größten gemeinsamen Teiler zweier ganzer Zahlen. Die Funktion erwartet zwei Zahlen und gibt eine Zahl zurück.

Syntax

gcd(int zahl1, int zahl2)

Parameter

• zahl1 - erste Zahl aus der Menge der ganzen Zahlen
• zahl2 - zweite Zahl aus der Menge der ganzen Zahlen

Return Value

• Gibt eine Ganzzahl zurück

Beispiele

Standardfälle

gcd('5','20')   --> returns 5
gcd('-5','0')   --> returns 5

JUnit Tests

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@BeforeClass
public static void beforeTest() {
	
		fillInVariableMap.put(1, OMConverter.toObject("<OMOBJ><OMI>0</OMI></OMOBJ>"));
		fillInVariableMap.put(2, OMConverter.toObject("<OMOBJ><OMI>20</OMI></OMOBJ>"));
		fillInVariableMap.put(3, OMConverter.toObject("<OMOBJ><OMI>10</OMI></OMOBJ>"));
		fillInVariableMap.put(4, OMConverter.toObject("<OMOBJ><OMI>-5</OMI></OMOBJ>"));
		fillInVariableMap.put(5, OMConverter.toObject("<OMOBJ><OMI>5</OMI></OMOBJ>"));

		exerciseVariableMap.put("a", OMConverter.toObject("<OMOBJ><OMI>0</OMI></OMOBJ>"));
		exerciseVariableMap.put("b", OMConverter.toObject("<OMOBJ><OMI>20</OMI></OMOBJ>"));
		exerciseVariableMap.put("c", OMConverter.toObject("<OMOBJ><OMI>10</OMI></OMOBJ>"));
		exerciseVariableMap.put("d", OMConverter.toObject("<OMOBJ><OMI>-5</OMI></OMOBJ>"));
		exerciseVariableMap.put("e", OMConverter.toObject("<OMOBJ><OMI>5</OMI></OMOBJ>"));
	
}

@Test
public void testGCD1() {
	assertEquals(5, Evaluator.getNumberResult("gcd('5', '5')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCD2() {
	assertEquals(3, Evaluator.getNumberResult("gcd('3', '-9')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCD3() {
	assertEquals(3, Evaluator.getNumberResult("gcd('-3', '9')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCD4() {
	assertEquals(5, Evaluator.getNumberResult("gcd('-5', '-5')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCD5() {
	assertNotEquals(5, Evaluator.getNumberResult("gcd('5', '9')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCD6() {
	assertNotEquals(3, Evaluator.getNumberResult("gcd('-3', '7')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCDAtDefinition1() {
	assertEquals(55, Evaluator.getNumberResult("gcd('0', '55')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCDAtDefinition2() {
	assertEquals(11, Evaluator.getNumberResult("gcd('-11', '0')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCDAtDefinition3() {
	assertEquals(0, Evaluator.getNumberResult("gcd('0', '0')", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testGCDWithInput1() {
	assertEquals(10, Evaluator.getNumberResult("gcd('[pos=2]', '[pos=3]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithInput2() {
	assertEquals(5, Evaluator.getNumberResult("gcd('[pos=3]', '[pos=4]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithInput3() {
	assertEquals(5, Evaluator.getNumberResult("gcd('[pos=1]', '[pos=4]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithVariables1() {
	assertEquals(10, Evaluator.getNumberResult("gcd('[var=b]', '[var=c]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithVariables2() {
	assertEquals(5, Evaluator.getNumberResult("gcd('[var=c]', '[var=d]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithVariables3() {
	assertEquals(5, Evaluator.getNumberResult("gcd('[var=a]', '[var=d]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithExpressions1() {
	assertEquals(5,
			Evaluator.getNumberResult("gcd('gcd(5, [var=c])', '[var=c]')", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testGCDWithExpressions2() {
	assertEquals(5, Evaluator.getNumberResult("gcd('[var=c]', '(gcd([var=d], 5))')", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testGCDWithExpressions3() {
	assertEquals(5, Evaluator.getNumberResult("gcd(gcd('[var=e]',gcd('[var=e]','5')),gcd('[var=b]','[pos=5]'))",
			exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testGCDWithWrongInputPointNumber() {
	Evaluator.getNumberResult("gcd('5.5','4')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testGCDWithWrongInputCharacter() {
	Evaluator.getNumberResult("gcd('a', '2')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testGCDWithOneArgument() {
	Evaluator.getNumberResult("gcd('7')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testGCDWithThreeArguments() {
	Evaluator.getNumberResult("gcd('4', '5', '7')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = UndefinedExerciseVariableException.class)
public void testGCDWithMissingExerciseVariable() {
	Evaluator.getNumberResult("gcd('[var=j]', '3')", exerciseVariableMap, fillInVariableMap);
	fail();
}

@Test(expected = UndefinedFillInVariableException.class)
public void testGCDWithMissingInput() {
	Evaluator.getNumberResult("gcd('[pos=42]', '3')", exerciseVariableMap, fillInVariableMap);
	fail();
}