如何使用Visual Studio单元测试框架或NUnit框架在C＃中模拟对象？

Question

I have moved to developing applications in C# from Java. I came across the Visual Studio unit testing framework provided by Visual Studio, and another framework called NUnit.

1. Which of these frameworks support mocking objects, or something similar to returning specific response to a method in another project whose source code is not available?

I'm using Visual Studio Pro, so Microsoft Fakes is not applicable to me. Also, I came across moq, and rhinomocks but I'm not sure about these.

2. I was wondering if I can use a unit testing framework like the one provided by Visual Studio or NUnit without having to add additional dependency.

Answer 1

There are three popular unit testing frameworks used to support unit testing (Microsft Microsoft.VisualStudio.TestTools , NUnit and xUnit ) and none of them supports mocking.

From my experience, moq works quite well for most projects. For the example of how to use it in practice check this project DjvuNet . There you will find multiple examples of simple and complex mocking scenarios. This particular project uses xUnit as a unit test framework but it does not have any impact on how mocking is done.