Step 1
Add a new project to the existing project as in the following:
Step 2
In this unit test project, add a project reference to the original project.
Install NuGet packages in the test project
Right-click the UnitTestProject project and select Manage NuGet Packages as in the following:
Find and install the Microsoft ASP.NET Web API 2 Core package as in the following:
The Microsoft ASP.NET Web API 2.1 Core libraries will be installed in the UnitTestProject project.
Add a new class called TestEmployeeController.cs to the UnitTestProject project and implement a method. Build the solution.
All of the methods that are marked with the
TestMethod attribute will be tested. Select Test -> Run -> All Tests to run the tests.
The test has passed.
Now add one more record to the List<Employee> as in the following:
Build the solution and run the tests.
Now the expected result is 4 but the actual result is 3. So the test failed.