How to run test cases | Process of running test cases

After creating the test application, it is time to execute. There are few ways of doing it but the most common way is, choose Test => Run => All Tests just like shown in Figure 1. Another way is, right click on any code page or test method and select Run Tests just like shown in Figure 2.

Figure 1. Running all test cases using Test menu option

Figure 2. Running test cases using context menu of code file

Either option runs the test methods (annotated with [TestMethod]). Also, the Test Explorer window opens just like shown in Figure 3, displaying status and results of test methods:

Figure 3. Test Explorer window showing successful tests

In Figure 3 above, the status of the test cases is “Passed” designated by white check inside the green circle. When any test gets fail (ex: by changing message expected in ViewBag in the Index() test method), it is labeled with white cross (X) inside red circle just like shown in Figure 4. A test may fail due to any reasons:

• Return values of the method is incorrect (per our Assert statements).

• The output parameters are incorrect.

• Any unexpected exception occurred

• Any expected result did not occur

• Any bug exists in test code

Figure 4. Test Explorer window showing failed test

To see example fail test in Index() test method of the HomeControllerTest class, change

expected string which represents the value in the ViewBag.Message property and then compile the application and run tests again.

Clicking on Run link under Test Explorer window gives more granular options to run the tests just like shown in Figure 5 below:

Figure 5. Options to run tests with the Run link