public void Subtract_UnregisteredType_ThrowsInvalidOperationException()
{
// Arrange
IUnit unit = new Mock <IUnit>().Object;
ArithmeticsStore store = CreateStore();
// Act/assert
Assert.Throws <InvalidOperationException>(() => store.Subtract(new Quantity <float>(0.0f, unit), new Quantity <float>(0.0f, unit)));
}
public void Subtract_RegisteredType_InvokesOperation()
{
// Arrange
var mockDelegate = new Mock <IOperationFunction>();
IUnit unit = new Mock <IUnit>().Object;
ArithmeticsStore store = CreateStore();
store.RegisterSubtractOperation <float>(mockDelegate.Object.Operation);
// Act/assert
Assert.DoesNotThrow(() => store.Subtract(new Quantity <float>(0.0f, unit), new Quantity <float>(0.0f, unit)));
}
public void Subtract_RegisteredButTypeNotMatchingUnits_ThrowsArgumentException()
{
// Arrange
var mockDelegate = new Mock <IOperationFunction>();
IUnit unit1 = new Mock <IUnit>().Object;
IUnit unit2 = new Mock <IUnit>().Object;
ArithmeticsStore store = CreateStore();
store.RegisterSubtractOperation <float>(mockDelegate.Object.Operation);
// Act/assert
Assert.Throws <ArgumentException>(() => store.Subtract(new Quantity <float>(0.0f, unit1), new Quantity <float>(0.0f, unit2)));
}