• Open the C# project
• Right-click on the solution -> Add -> New Project…
• (Figure 1)

• Go to Installed -> Visual C# -> Test
• Click on Unit Test Project
• Give it a name and click OK
• (Figure 2)

• The unit test project is added to the solution
• (Figure 3)

Adding the reference to the application you want to test

• In the unit test project, add a reference to the project you want to test
• Right-click on References -> Add Reference…
• (Figure 3)

• Select the project you want to test
• Go to Projects -> Solution
• Check the checkbox of the project you want to test -> click OK
• (Figure 4)

Method 1

• Go to your unit test class in the unit test project
• Write a unit test

[Testclass]
public class UnitTest1
{
    [TestMethod]
    public void TestMethod1()
    {
        //Arrange
        ApplicationToTest.Calc ClassCalc = new ApplicationToTest.Calc();
        int expectedResult = 5;

        //Act
        int result = ClassCalc.Sum(2,3);

        //Assert
        Assert.AreEqual(expectedResult, result);
    }
}

Method 2

• Go the method you want to test
• Right-click on the method -> Create Unit Tests
• (Figure 4)

• Set Test Framework to MSTest
• Set Test Project to the name of your unit test project
• Set Output File to the name of the class of the unit tests
• Set Code for Test Method to one of the options listed which you prefer
• The other options can be edited but it’s not necessary

(Tip: If you haven’t made a unit tests project yet, you can still use this option. Just set Test Project to and Output File to . It will create the unit test project and it will add the reference of the project to the unit test project)

• (Figure 5)

• As you see below it creates the base of the unit test for you to fill in
• (Figure 6)

• To see you unit tests go to Test -> Windows -> Test Explorer
• (Figure 1)

• This will open an overview of all the tests in the application
• (Figure 2)

• In the figure above you can see that the example has one unit test and it hasn’t been run yet

• You can double-click on a test to go to the code where the unit test is defined

• You can run single or multiple tests with the Run All or Run…

• You can also run tests and change settings from the Test menu (Figure 1)

• To see you unit tests go to Test -> Windows -> Code Coverage Results
• (Figure 1)

• It will open the following window
• (Figure 2)

• The window is now empty
• Go to the Test menu -> Analyze Code Coverage
• (Figure 3)

• The tests will now be run as well (See the results in the Test Explorer)
• The results will be shown in a table in with you can see which classes and methods are covered with unit tests and which aren’t
• (Figure 4)