Does NSubstitute support the idea of Partial Mocks?
Yes! This feature was introduced in version 1.7.0 (released January 2014).
Update: As @Brian points out, NSubstitute 1.7+ supports partial mocks
Original answer:
Not as of v1.0.
It is something we're considering for vNext. If you have specific syntax ideas or requirements please post to the user group. I've added an issue for this to the issue log, so you could also add details there.
I am using version 1.3.0.0, but I could do:
Constraint failing = Substitute.For<Constraint>();
failing.Matches(-1).Returns(false);
Where Constraint is a class with virtual methods and the method call was substituted just fine.
来源：https://stackoverflow.com/questions/4600825/does-nsubstitute-support-the-idea-of-partial-mocks