public void CalculateWeightOf_PercentageIsNonNegative_CalculatesTheWeight()
{
Weight weight = new Weight(125.00D);
Weight result = weight.CalculateWeightOf(0.2D);
Assert.That(result, Is.EqualTo(new Weight(25.00D)));
}
public void CalculateWeightOf_PercentageIsNegative_ThrowsNotNonNegativeException()
{
Weight weight = new Weight(125.00D);
Assert.Throws <NotNonNegativeException>(() => weight.CalculateWeightOf(-0.2D));
}
