public void GivenVariableNumberWhenSubtractDoubleShouldReturnNewVariableNumberWithDoubleSubtractedFromSource()
{
var uom = InternalUnitSystemManager.Instance.UnitOfMeasures["mi"].ToModelUom();
var value = new NumericValue(uom, 3.62);
var number = new NumericRepresentationValue(RepresentationInstanceList.vrDistanceTraveled.ToModelRepresentation(), value);
var result = number.Subtract(1.23);
Assert.IsInstanceOf <NumericRepresentationValue>(result);
Assert.AreEqual(2.39, result.Value.Value, Epsilon);
}
public void GivenVariableNumbersWithIncompatibleUnitsWhenSubtractThenException()
{
var originalUom = InternalUnitSystemManager.Instance.UnitOfMeasures["m"].ToModelUom();
var originalValue = new NumericValue(originalUom, 1.75);
var originalNumber = new NumericRepresentationValue(RepresentationInstanceList.vrDistanceTraveled.ToModelRepresentation(), originalValue);
var secondUom = InternalUnitSystemManager.Instance.UnitOfMeasures["C"].ToModelUom();
var secondValue = new NumericValue(secondUom, 3.5);
var secondNumber = new NumericRepresentationValue(RepresentationInstanceList.vrDistanceTraveled.ToModelRepresentation(), secondValue);
Assert.Throws <InvalidOperationException>(() => originalNumber.Subtract(secondNumber));
}
public void GivenTwoVariableNumbersWithSameUomWhenSubtractedThenSourceValueIsDifference()
{
var uom = InternalUnitSystemManager.Instance.UnitOfMeasures["C"].ToModelUom();
var originalValue = new NumericValue(uom, 22);
var originalNumber = new NumericRepresentationValue(RepresentationInstanceList.vrAirTemperature.ToModelRepresentation(), originalValue);
var secondNumber = new NumericValue(uom, 13);
var result = originalNumber.Subtract(secondNumber);
Assert.IsInstanceOf <NumericRepresentationValue>(result);
Assert.AreEqual(9, result.Value.Value);
}
public void GivenTwoVariableNubmersWhenSubtractedThenRepresentationIsOriginal()
{
var originalUom = _ftUnitOfMeasure.ToModelUom();
var originalValue = new NumericValue(originalUom, 22);
var originalNumber = new NumericRepresentationValue(RepresentationInstanceList.vrDistanceTraveled.ToModelRepresentation(), originalValue);
var secondUom = InternalUnitSystemManager.Instance.UnitOfMeasures["m"].ToModelUom();
var secondValue = new NumericValue(secondUom, 11);
var secondNumber = new NumericRepresentationValue(RepresentationInstanceList.vrElevation.ToModelRepresentation(), secondValue);
var result = originalNumber.Subtract(secondNumber);
Assert.AreSame(RepresentationInstanceList.vrDistanceTraveled.DomainId, result.Representation.Code);
}
public void GivenVariableNumberWhenSubtractVariableNumberThenResultIsInOriginalUom()
{
var originalUom = InternalUnitSystemManager.Instance.UnitOfMeasures["m"].ToModelUom();
var originalValue = new NumericValue(originalUom, 1.75);
var originalNumber = new NumericRepresentationValue(RepresentationInstanceList.vrDistanceTraveled.ToModelRepresentation(), originalValue);
var secondUom = _ftUnitOfMeasure.ToModelUom();
var secondNumber = new NumericValue(secondUom, 3.5);
var expected = 0.6832; //1.75m + (3.5ft -> m)
var actual = originalNumber.Subtract(secondNumber);
Assert.IsInstanceOf <NumericRepresentationValue>(actual);
Assert.AreEqual(expected, actual.Value.Value, Epsilon);
Assert.AreSame(originalUom, actual.Value.UnitOfMeasure);
}