Min

Beschreibung

Die Funktion min ermittelt den kleinsten Wert zweier Zahlen. Die Funktion erwartet zwei zu vergleichende Zahlen und gibt die kleinere Zahl zurück.

Syntax

min(float zahl1, float zahl2)

Parameter

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

Return Value

• Gibt die kleinere Zahl zurück

Beispiele

Standardfälle

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

Benutzung mit Variablen

min([pos=1],[pos=3])
min([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 testMin1() {
	assertEquals(1, Evaluator.getNumberResult("min(1, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMin2() {
	assertEquals(2, Evaluator.getNumberResult("min(3, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMin3() {
	assertEquals(1, Evaluator.getNumberResult("min(1, 1)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMin4() {
	assertEquals(0, Evaluator.getNumberResult("min(0, 0)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMin5() {
	assertEquals(-2, Evaluator.getNumberResult("min(-2, 0)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMin6() {
	assertEquals(-2, Evaluator.getNumberResult("min(-2, 2)", exerciseVariableMap, fillInVariableMap), 0.0);
}

@Test
public void testMinWithVariables1() {
	assertEquals(1, Evaluator.getNumberResult("min([var=a], [var=b])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithVariables2() {
	assertEquals(-1, Evaluator.getNumberResult("min([var=a], [var=c])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithInput1() {
	assertEquals(1, Evaluator.getNumberResult("min([pos=1], [pos=2])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithInput2() {
	assertEquals(-1, Evaluator.getNumberResult("min([pos=1], [pos=3])", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithExpressions1() {
	assertEquals(-12, Evaluator.getNumberResult("min(min(-12,2), 4)", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithExpressions2() {
	assertEquals(-12,
			Evaluator.getNumberResult("min(min(-12,2), min(5, 8))", exerciseVariableMap, fillInVariableMap),
			0.0);
}

@Test
public void testMinWithExpressions3() {
	assertEquals(-13, Evaluator.getNumberResult("min(min(-12,min(13,-13)), min(5, 8))", exerciseVariableMap,
			fillInVariableMap), 0.0);
}

@Test
public void testMinWithPointNumbers1() {
	assertEquals(1.0, Evaluator.getNumberResult("min(1.0, 1.3)", exerciseVariableMap, fillInVariableMap), 0.0);
}

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

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

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

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

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

Hinweise

• Eine Gleitkommazahl wird mit einem Punkt anstatt eines Komma gebildet