public void FromAmounts_CalculatesPercentage()
{
Percentage eightyPercent = Percentage.FromAmounts(60L, 75L);
Assert.That(eightyPercent.Value, Is.EqualTo(80d));
Assert.That(eightyPercent.Fraction, Is.EqualTo(0.8d));
Percentage tenPercent = Percentage.FromAmounts(10d, 100d);
Assert.That(tenPercent.Value, Is.EqualTo(10d));
Assert.That(tenPercent.Fraction, Is.EqualTo(0.1d));
Percentage thousandPercent = Percentage.FromAmounts(100d, 10d);
Assert.That(thousandPercent.Value, Is.EqualTo(1000d));
Assert.That(thousandPercent.Fraction, Is.EqualTo(10d));
}
public static Percentage AsPercentOf(this double given, double total)
{
return(Percentage.FromAmounts(given, total));
}
public void FromAmount_ZeroTotal_Exception()
{
Assert.That(() => Percentage.FromAmounts(10, 0), Throws.ArgumentException);
}
