1. Tool installation
2. Create a class
3, click New Project, here we build a C # class library
4, click OK, enter the code editing interface, which is actually a class, you can write down the code in the book
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5. Position the mouse in the constructor of the user class, then right-click the pop-up menu to create a unit test
6. In the popup dialog box, select the function you want to test click OK
7. Enter a name for the new project, click Create
8. A new project will be found in the Solution Explorer on the left or right
9. Automatically created statements are generally unable to implement automated testing, you must modify some of them, the general Main method is to initialize the input, create an instance, verify the results, specifically, such as the following statement, press F6 key to compile.
10. Look in the menu bar: Test → window → test List Editor.
Microsoft Visual Studio-VSTS Unit Test Guide