How to run ClassCleanup (MSTest) after each class with test?

Question

I have several classes with tests suites.

Each test class starts from ClassInitialize and finishes by ClassCleanup. My problem is that ClassCleanup isn't called at the end of each class, it's called only after all tests in three classes. Can I fix this issue? Thanks!

[ClassInitialize] public static void SetUpBrowser(TestContext context) {     pageObjectBase.SetBrowser("chrome");     pagesManager.GetPageObjectBase(); }  [TestMethod] public void FindCriticalBug() {     bla-bla-bla(); }  [ClassCleanup] public static void CloseBrowser() {     pageObjectBase.Stop();     pagesManager.GeneralClearing(); } 

Answer 1

Tests are run unordered, including tests across classes. See this blog post:

https://docs.microsoft.com/archive/blogs/ploeh/classcleanup-may-run-later-than-you-think

To quote:

In any case, here's the result from my Output Window:

AssemblyInitialize TestClass1: ClassInitialize TestClass1: TestInitialize TestClass1: MyTestCase1 TestClass1: TestCleanup TestClass2: ClassInitialize TestClass2: TestInitialize TestClass2: MyTestCase2 TestClass2: TestCleanup TestClass1: ClassCleanup TestClass2: ClassCleanup AssemblyCleanup 

...this doesn't mean that TestClass1's ClassCleanup executes immediately after the last test case in the class! In fact, it waits until all test cases are executed, and the executes together with TestClass2's ClassCleanup.

This surprised me at first, but that was obviously only because I hadn't really thought it through: Since tests are, in principle, unordered, there's not guarantee that all tests in TestClass1 are executed in immediate succession. Theoretically, the execution engine may pick a test case from TestClass1, then one from TestClass2, then another from TestClass1, etc. Since that is the case, there's no guarantee that all tests from one test class have been executed before a new test class is initialized, and thusly, all ClassCleanup methods may as well be deferred until all test cases have been executed.

Unfortunately, you'll have to look at ordered tests or at a different unit testing framework if this doesn't work for you.

Answer 2

There is a different attribute called TestCleanupAttribute, which will run after every test.

There is also an attribute to run before every test called TestInitializeAttribute.

Here is an example of them running together.

[TestClass] public class MyTests {    [ClassInitialize]    public void ClassInitialize() { Debug.Print("Running ClassInitialize"); }     [TestInitialize]    public void TestInitialize() { Debug.Print("Running    TestInitialize"); }     [TestMethod]    public void TestMethod1() { Debug.Print("Running       TestMethod1....."); }     [TestMethod]    public void TestMethod2() { Debug.Print("Running       TestMethod2....."); }     [TestCleanup]    public void TestCleanup() { Debug.Print("Running    TestCleanup"); }     [ClassCleanup]    public void ClassCleanup() { Debug.Print("Running ClassCleanup"); } } 

This will result in

Running ClassInitialize Running    TestInitialize Running       TestMethod1..... Running    TestCleanup Running    TestInitialize Running       TestMethod2..... Running    TestCleanup Running ClassCleanup