public void FromDifference_TotalSmaller_NegativePercentage()
{
DecimalPercentage twiceAsSmall = DecimalPercentage.FromDifference(10L, 20L);
Assert.That(twiceAsSmall.Value, Is.EqualTo(-100m));
twiceAsSmall = DecimalPercentage.FromDifference(10m, 20m);
Assert.That(twiceAsSmall.Value, Is.EqualTo(-100d));
}
public void FromDifference_TotalBigger_PositivePercentage()
{
DecimalPercentage fiftyPercentBigger = DecimalPercentage.FromDifference(20L, 10L);
Assert.That(fiftyPercentBigger.Value, Is.EqualTo(50m));
fiftyPercentBigger = DecimalPercentage.FromDifference(20m, 10m);
Assert.That(fiftyPercentBigger.Value, Is.EqualTo(50d));
}
public void FromDifference_ZeroTotal_HundredPercent()
{
DecimalPercentage hundredPercentMore = DecimalPercentage.FromDifference(15, 0);
Assert.That(hundredPercentMore.Value, Is.EqualTo(100m));
Assert.That(hundredPercentMore.Fraction, Is.EqualTo(1m));
hundredPercentMore = DecimalPercentage.FromDifference(long.MaxValue, 0);
Assert.That(hundredPercentMore.Value, Is.EqualTo(100d));
Assert.That(hundredPercentMore.Fraction, Is.EqualTo(1d));
}