All test methods in a test class can readily share setup and takedown code thanks to xUnit’s class fixtures. By enhancing code readability and maintainability and promoting uniformity in setup and cleanup processes, this feature guarantees a consistent and efficient testing environment for the whole suite of tests. Rather than repeating the setup logic in each test function, we can use a fixture class to encapsulate this same initialization logic. By creating a sense of coherence and consistency across the entire test suite, we promote structured and standardized testing techniques in addition to simplified code. By controlling common setup, this enhances our code maintainability and establishes a collaborative testing environment.

In my previous article, you will see that I manually created the object and used it in the unit test method.

If you haven’t looked at that article, then please refer to this. Let’s try to register that dependency in the class fixture and use those dependencies in the test class. We will resolve that dependency on the test class constructor and use it in the unit test method.

Creating a Class Fixture

Use Fixture in the Test Class

Let’s run the test class and check if the fixture class works as we define it or not. See the screenshot below as we execute our newly created fixture class and register dependencies on the ServiceProvider property.

In the test class constructor, we are able to see those dependencies and resolve them for use in the test class method.

I can see that our test method will be executed successfully.

You can see the screenshot below for every unit test case that has been executed successfully.

Summary

Utilizing Class Fixtures to their fullest, we’ve found a happy medium between maintaining stability and completing tasks quickly. This has made it possible for our.NET projects to have more robust and flexible unit tests. We learned the new technique and evolved together. Happy coding!

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