public void IsImproper_IsValidWithOneArugment()
{
// arrange
Fraction fraction1 = new Fraction(3);
Boolean expected1 = false;
// action
Boolean actual1 = fraction1.IsImproper();
// assert
Assert.AreEqual(expected1, actual1, "Invalid result with one argument.");
}
public void IsImproper_IsValidSameNumAndDen()
{
// arrange
Fraction fraction4 = new Fraction(3,3);
Boolean expected4 = true;
// action
Boolean actual4 = fraction4.IsImproper();
// assert
Assert.AreEqual(expected4, actual4, "Invalid result with same numerator and denominator.");
}
public void IsImproper_IsValidWithThreeArguments()
{
// arrange
Fraction fraction3a = new Fraction(1, 2, 3);
Fraction fraction3b = new Fraction(1, 3, 2);
Boolean expected3a = false;
Boolean expected3b = true;
// action
Boolean actual3a = fraction3a.IsImproper();
Boolean actual3b = fraction3b.IsImproper();
// assert
Assert.AreEqual(expected3a, actual3a, "Invalid result with two arguments, big denominator.");
Assert.AreEqual(expected3b, actual3b, "Invalid result with two arguments, small denominator.");
}
public void IsImproper_IsValidWithNegatives()
{
// arrange
Fraction fraction1 = new Fraction(-4, 3);
Fraction fraction2 = new Fraction(4, -3);
Fraction fraction3 = new Fraction(-4, -3);
Fraction fraction4 = new Fraction(-3, 4);
// action
Boolean actual1 = fraction1.IsImproper();
Boolean actual2 = fraction2.IsImproper();
Boolean actual3 = fraction3.IsImproper();
Boolean actual4 = fraction4.IsImproper();
// assert
Assert.AreEqual(true, actual1, "Invalid result with negative numerator.");
Assert.AreEqual(true, actual2, "Invalid result with negative denominator.");
Assert.AreEqual(true, actual3, "Invalid result with negative numerator and denominator.");
Assert.AreEqual(false, actual4, "Invalid result with positive numerator and denominator.");
}
public void IsImproper_IsValidWithTwoArguments()
{
// arrange
Fraction fraction2a = new Fraction(2, 3);
Fraction fraction2b = new Fraction(3, 2);
Boolean expected2a = false;
Boolean expected2b = true;
// action
Boolean actual2a = fraction2a.IsImproper();
Boolean actual2b = fraction2b.IsImproper();
// assert
Assert.AreEqual(expected2a, actual2a, "Invalid result with two arguments, big denominator.");
Assert.AreEqual(expected2b, actual2b, "Invalid result with two arguments, small denominator.");
}
/// <summary>
/// MakeMixedNumber - Essentially calculates a Mixed Number Fraction.
/// </summary>
/// <param name="fraction"></param>
/// <returns>Mixed Number Fraction.</returns>
public static Fraction MakeMixedNumber(Fraction fraction)
{
// Calculate WholePart, Numerator, and Denominator for Improper Fractions
if (fraction.IsImproper())
{ // Improper fraction
if (fraction.Numerator % fraction.Denominator == 0)
{ // When the numerator is divisible by the denominator
return new Fraction ((int)fraction.Numerator/fraction.Denominator);
}
else
{
if( fraction.Numerator < 0 )
{ // Apply negative sign to numerator
return new Fraction((int)((-1) * fraction.Numerator / fraction.Denominator),
(fraction.Numerator % fraction.Denominator), fraction.Denominator);
}
else{
return new Fraction((int)(fraction.Numerator / fraction.Denominator),
(fraction.Numerator % fraction.Denominator), fraction.Denominator);
}
}
}
else
{
// Return regular fraction if it's a Proper Fraction or a Mixed Number Fraction
return new Fraction(fraction.WholePart, fraction.Numerator, fraction.Denominator);
}
}