Max

Beschreibung

Die Funktion max ermittelt den größten Wert zweier Zahlen. Die Funktion erwartet zwei zu vergleichende Zahlen und gibt die größte Zahl zurück.

Syntax

max(float zahl1, float zahl2)

Parameter

• zahl1 - der erste zu vergleichende Wert
• zahl2 - der zweite zu vergleichende Wert

Return Value

• Gibt die größte Zahl zurück

Beispiele

Standardfälle

max(12,3)   --> returns 12
max(9.568,100)   --> returns 100

Benutzung mit Variablen

max([pos=1],[pos=3])
max([var=a],[var=b])

JUnit Tests

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

	exerciseVariableMap.put("a", OMConverter.toObject("<OMOBJ><OMI>1</OMI></OMOBJ>"));
	exerciseVariableMap.put("b", OMConverter.toObject("<OMOBJ><OMI>2</OMI></OMOBJ>"));
	exerciseVariableMap.put("c", OMConverter.toObject("<OMOBJ><OMI>-1</OMI></OMOBJ>"));
}

@Test
public void testMax1() {
	assertEquals(2, Evaluator.getNumberResult("max(1, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMax2() {
	assertEquals(3, Evaluator.getNumberResult("max(3, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMax3() {
	assertEquals(1, Evaluator.getNumberResult("max(1, 1)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMax4() {
	assertEquals(0, Evaluator.getNumberResult("max(0, 0)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMax5() {
	assertEquals(0, Evaluator.getNumberResult("max(-2, 0)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMax6() {
	assertEquals(2, Evaluator.getNumberResult("max(-2, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMaxWithVariables1() {
	assertEquals(2, Evaluator.getNumberResult("max([var=a], [var=b])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithVariables2() {
	assertEquals(1, Evaluator.getNumberResult("max([var=a], [var=c])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithInput1() {
	assertEquals(2, Evaluator.getNumberResult("max([pos=1], [pos=2])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithInput2() {
	assertEquals(1, Evaluator.getNumberResult("max([pos=1], [pos=3])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithExpressions1() {
	assertEquals(12, Evaluator.getNumberResult("max(max(12,2), 4)", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithExpressions2() {
	assertEquals(12, Evaluator.getNumberResult("max(max(12,2), max(5, 8))", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMaxWithExpressions3() {
	assertEquals(13, Evaluator.getNumberResult("max(max(12,max(13,-13)), max(5, 8))", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testMaxWithPointNumbers1() {
	assertEquals(1.3, Evaluator.getNumberResult("max(1.0, 1.3)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testMaxWithWrongInputCharacter() {
	Evaluator.getNumberResult("max(a, a)", exerciseVariableMap, fillInVariableMap);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testMaxWithOneArgument() {
	Evaluator.getNumberResult("max(2)", exerciseVariableMap, fillInVariableMap);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testMaxWithThreeArguments() {
	Evaluator.getNumberResult("max(1, 23, 4)", exerciseVariableMap, fillInVariableMap);
}

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

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

Hinweise

• Eine Gleitkommazahl wird mit einem Punkt anstatt eines Komma gebildet