IsPolynomial

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Beschreibung

Die Funktion isPolynomial prüft, ob ein Ausdruck ein Polynom ist. Es können nur Polynome in einer Variable überprüft werden. Die Funktion benötigt zwei Strings, den zu überprüfenden Ausdruck und die Variable in welcher der Ausdruck ein Polynom sein soll. Sie gibt einen Boolean zurück.

Syntax

isPolynomial(String term, String variable)

Parameter

  • term - der zu überprüfende Ausdruck
  • variable - die Variable

Return Value

  • Gibt einen Boolean zurück.

Beispiele

isPolynomial('x^2+x+1','x')    --> returns true

JUnit Tests

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@BeforeClass
public static void beforeTest() {
	OMOBJ x = new OMOBJ();
	OMOBJ y = new OMOBJ();
	x.setOMV(OMCreator.createOMV("x"));
	y.setOMV(OMCreator.createOMV("y"));

	fillIn.put(1, x);
	fillIn.put(2, y);

	exerVar.put("a", x);
	exerVar.put("b", y);
}

@Test
public void testIsPolynomial1() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x^2+x+1','x')", exerVar, fillIn));
}

@Test
public void testIsPolynomial2() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('y^2+3*y+4','y')", exerVar, fillIn));
}

@Test
public void testIsPolynomial3() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('3*a^5+2*a^3-a','a')", exerVar, fillIn));
}

@Test
public void testIsPolynomial4() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('m^3+2*m-2','m')", exerVar, fillIn));
}

@Test
public void testIsPolynomial5() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x^2+x+1','y')", exerVar, fillIn));
}

@Test
public void testIsPolynomial6() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x','x')", exerVar, fillIn));
}

@Test
public void testIsPolynomial7() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('sin(x)+ y^3', 'y')", exerVar, fillIn));
}

@Test
public void testIsPolynomial8() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('e^(x) + y^3', 'y')", exerVar, fillIn));
}

@Test
public void testIsPolynomial9() {
	assertEquals(false, Evaluator.getBooleanResult("isPolynomial('sin(x)+ y^3', 'x')", exerVar, fillIn));
}

@Test
public void testIsPolynomial10() {
	assertEquals(false, Evaluator.getBooleanResult("isPolynomial('e^(x) + y^3', 'x')", exerVar, fillIn));
}

@Test
public void testIsPolynomialWithInput() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x^2+x+1','[pos=1]')", exerVar, fillIn));
}

@Test
public void testIsPolynomialWithVariables() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x^2+x+1','[var=a]')", exerVar, fillIn));
}

@Test // (expected=AssertionError.class)
public void testIsPolynomialWithNumberAsSecondArgument1() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('sin(x)', '1')", exerVar, fillIn));// Look if 1 is
																									// Polynomial
}

@Test // (expected=AssertionError.class)
public void testIsPolynomialWithNumberAsSecondArgument2() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('e^(x)', '0')", exerVar, fillIn)); // Look if 0 is
																									// Polynomial
}

@Test // (expected=AssertionError.class)
public void testIsPolynomialWithNumberAsSecondArgument3() {
	assertEquals(true, Evaluator.getBooleanResult("isPolynomial('x^2+x+1','2')", exerVar, fillIn));// Look if 2 is
																									// Polynomial
}

@Test(expected = FunctionInvalidArgumentTypeException.class)
public void testIsPolynomialWithEmptyStringArguments() {
	Evaluator.getBooleanResult("isPolynomial('', '')", exerVar, fillIn);
}

@Test(expected = FunctionInvalidNumberOfArgumentsException.class)
public void testIsPolynomialWithEmptyArgument() {
	Evaluator.getBooleanResult("isPolynomial()", exerVar, fillIn);
}

@Test(expected = UndefinedExerciseVariableException.class)
public void testIsPolynomialWithoutExerciseVariable() {
	Evaluator.getBooleanResult("isPolynomial('[var=j]', '[var=j]')", exerVar, fillIn);
}

@Test(expected = UndefinedFillInVariableException.class)
public void testIsPolynomialWithoutInput() {
	Evaluator.getBooleanResult("isPolynomial('[pos=42]', '[pos=42]')", exerVar, fillIn);
}

Hinweise

  • Der Ausdruck muss ein Polynom sein!