public void DivideOp_2DividedBy8PerCent_Equals25()
{
double expectedD = 25;
double expectedM = 25;
Percent testValue = new Percent(8);
Assert.AreEqual(expectedD, 2 / testValue, 0.0000000000001);
Assert.AreEqual(expectedD, 2d / testValue, 0.000001);
Assert.AreEqual(expectedM, 2m / testValue);
}
public void Parser()
{
CultureInfo culture = CultureInfo.CurrentCulture;
string dot = culture.NumberFormat.PercentDecimalSeparator;
Assert.AreEqual(new Percent(2.35), Percent.Parse($"2{dot}35%", culture));
Assert.AreEqual(new Percent(20), Percent.Parse("20%", culture));
Assert.Throws <FormatException>(() => Percent.Parse($"{dot}5%", culture));
Assert.Throws <FormatException>(() => Percent.Parse($"7{dot}%", culture));
}
public static double InterpolateWith(this int start, double end, Percent percent)
{
double diff = end - start;
return(start + diff * percent);
}
public void FromCoefficient_CoefficientLessThanOne_CreatesNegativePercent()
{
Assert.AreEqual(new Percent(-10), Percent.FromCoefficient(.9));
}
public void FromCoefficient_ConvertsCoefficientToPercentage()
{
Assert.AreEqual(new Percent(30), Percent.FromCoefficient(1.3));
}