public void Subtraction_PolynomialMinusPolynomial_NewPolynomial(Polynomial membersA,
Polynomial membersB, Polynomial expectedResult)
{
// act
var actualResult = membersA.Subtraction(membersB);
// assert
AssertIsAsExpected(expectedResult.ToArray().OrderBy(x => x.Degree), actualResult.ToArray().OrderBy(x => x.Degree), _polynomialComparer);
}
public void Subtraction_PolynomialMinusNullPolynomial_ThrowArgumentNullException()
{
// arrange
var expectedTypeError = typeof(PolynomialArgumentNullException);
// act
Exception ex = Assert.Catch(() => _polynomial.Subtraction((Polynomial)null));
// assert
Assert.AreEqual(expectedTypeError, ex.GetType(),
message: "Subtraction method throw PolynomialArgumentNullException if parametr is null. ");
}
