public void GivenNullWhenSubtractFromSourceShoulReturnSourceValue()
{
var number = new NumericValue(InternalUnitSystemManager.Instance.UnitOfMeasures["cm"].ToModelUom(), 4.25);
number.SubtractFromSource(null);
Assert.AreEqual(4.25, number.Value, Epsilon);
}
public void GivenBaseNumberAndDoubleWhenSubtractFromSourceShouldSubtractFromSource()
{
var firstNumber = new NumericValue(_mileUnitOfMeasure.ToModelUom(), 42.24);
firstNumber.SubtractFromSource(12.13);
Assert.AreEqual(30.11, firstNumber.Value, Epsilon);
}
public void GivenBaseNumberWhenSubtractBaseNumberWithDifferentUnitOfMeasureThenShouldConvertAndSubtractFromSource()
{
var firstNumber = new NumericValue(InternalUnitSystemManager.Instance.UnitOfMeasures["cm"].ToModelUom(), 3.54);
var secondNumber = new NumericValue(InternalUnitSystemManager.Instance.UnitOfMeasures["in"].ToModelUom(), 1);
firstNumber.SubtractFromSource(secondNumber);
Assert.AreEqual(1, firstNumber.Value, Epsilon);
}
public void GivenBaseNumberWhenSubtractBaseNumberFromSourceShouldSubtractValueFromSourceValue()
{
var number = new NumericValue(_mileUnitOfMeasure.ToModelUom(), 9.876);
var secondNumber = new NumericValue(_mileUnitOfMeasure.ToModelUom(), 1.234);
number.SubtractFromSource(secondNumber);
Assert.AreEqual(8.642, number.Value);
}