public void MultiplyFractionsTest(int leftNum, int leftDen, int rightNum, int rightDen, int resNum, int resDen)
{
var left = new Fraction(leftNum, leftDen);
var right = new Fraction(rightNum, rightDen);
var result = FractionCalculator.Multiply(left, right);
Assert.Equal(resNum, result.Numerator);
Assert.Equal(resDen, result.Denominator);
}
public void Should_multiply_zero_fractions()
{
Assert.That(FractionCalculator.Multiply(new Fraction(0, 0), new Fraction(0, 0)),
Is.EqualTo(new Fraction(0, 0)));
}
public void Should_multiply_negative_fractions(int multiplicandNumerator, int multiplicandDenominator, int multiplierNumerator, int multiplierDenominator, int expectedNumerator, int expectedDenominator)
{
Assert.That(FractionCalculator.Multiply(new Fraction(multiplicandNumerator, multiplicandDenominator), new Fraction(multiplierNumerator, multiplierDenominator)),
Is.EqualTo(new Fraction(expectedNumerator, expectedDenominator)));
}
public void Should_return_a_zero_fraction_when_one_factor_is_zero(int multiplicandNumerator, int multiplicandDenominator, int multiplierNumerator, int multiplierDenominator, int expectedNumerator, int expectedDenominator)
{
Assert.That(FractionCalculator.Multiply(new Fraction(multiplicandNumerator, multiplicandDenominator), new Fraction(multiplierNumerator, multiplierDenominator)),
Is.EqualTo(new Fraction(expectedNumerator, expectedDenominator)));
}
public void Should_multiply_fractions_with_different_denominator()
{
Assert.That(FractionCalculator.Multiply(new Fraction(1, 4), new Fraction(2, 5)),
Is.EqualTo(new Fraction(1, 10)));
}
public void Should_multiply_fractions_with_same_denominator()
{
Assert.That(FractionCalculator.Multiply(new Fraction(1, 4), new Fraction(2, 4)),
Is.EqualTo(new Fraction(1, 8)));
}
public void Should_multiply_negative_whole_numbers(int multiplicandNumerator, int multiplierNumerator, int expectedNumerator)
{
Assert.That(FractionCalculator.Multiply(new Fraction(multiplicandNumerator), new Fraction(multiplierNumerator)),
Is.EqualTo(new Fraction(expectedNumerator)));
}