private static bool PolynomialEquality(Polynomial p1, LibPolynomial p2)
{
if (p1 == null || p2 == null || p1.Degree != p2.Degree)
{
return(false);
}
for (int i = 0; i < p1.Degree; i++)
{
if (p1[i] != p2[i])
{
return(false);
}
}
return(true);
}
public void TestMultiplication()
{
double[] sameSizeArr = new double[] { 17, 1, -13, 1, 0 };
Polynomial sameSize = new Polynomial(sameSizeArr);
LibPolynomial libSameSize = new LibPolynomial(sameSizeArr);
Assert.True(PolynomialEquality(sameSize * polynom, libSameSize * libPolynom));
double[] biggerArr = new double[] { 1, 1, 1, 1, 1, 73 };
Polynomial bigger = new Polynomial(biggerArr);
LibPolynomial libBigger = new LibPolynomial(biggerArr);
Assert.True(PolynomialEquality(bigger * polynom, libBigger * libPolynom));
Assert.Throws(typeof(ArgumentException), () => { Polynomial test = polynom * null; });
}
public void TestMultOnNumber()
{
double positive = 73;
double negative = -73;
double zero = 0;
double[] values = new double[] { 1, 2, 0, 4, 5 };
LibPolynomial onPositive = new LibPolynomial(values.Select(x => x * positive).ToArray());
LibPolynomial onNegative = new LibPolynomial(values.Select(x => x * negative).ToArray());
LibPolynomial onZero = new LibPolynomial(values.Select(x => x * zero).ToArray());
Assert.True(PolynomialEquality(polynom * positive, onPositive));
Assert.True(PolynomialEquality(polynom * negative, onNegative));
Assert.True(PolynomialEquality(polynom * zero, onZero));
Polynomial nullPolynomial = null;
Assert.Throws(typeof(ArgumentException), () => { Polynomial test = nullPolynomial * 42.1; });
}
public void Setup()
{
double[] values = new double[] { 1, 2, 0, 4, 5 };
polynom = new Polynomial(values); // 5x^4 + 4x^3 + 0x^2 + 2x + 1
libPolynom = new LibPolynomial(values);
}
