public void MultiplicateTest(
int multiplicandNumerator,
int multiplicandDenominator,
int multiplierNumerator,
int multiplierDenominator,
int expectedNumerator,
int expectedDenominator)
{
var multiplicand = new Fraction(multiplicandNumerator, multiplicandDenominator);
var multiplier = new Fraction(multiplierNumerator, multiplierDenominator);
var product = _calculator.Multiplicate(multiplicand, multiplier);
Assert.AreEqual(expectedNumerator, product.Numerator);
Assert.AreEqual(expectedDenominator, product.Denominator);
}