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Aryan Kumar

Aryan Kumar

20-Jul-2023

Here are the steps on how to start with unit testing in C#:

  1. Choose a unit testing framework. There are many unit testing frameworks available for C#, such as xUnit, MSTest, and NUnit. Each framework has its own strengths and weaknesses, so it's important to choose one that's right for your project.
  2. Create a unit test project. A unit test project is a separate project that contains your unit tests. This allows you to keep your unit tests separate from your production code, making it easier to maintain and run them.
  3. Write unit tests. A unit test is a small piece of code that tests a specific unit of functionality in your code. Unit tests should be isolated, meaning that they should only test one unit of functionality at a time. They should also be repeatable, meaning that they should always produce the same results.
  4. Run your unit tests. Once you've written your unit tests, you can run them to make sure they're passing. If any of your tests fail, it means that there's a problem with your code. You can then use the unit tests to help you find and fix the problem.

Here are some additional tips for writing unit tests in C#:

  • Use assertions to check the results of your tests. An assertion is a statement that evaluates to a Boolean value. If the assertion evaluates to false, the unit test will fail.
  • Use data-driven testing to write more robust unit tests. Data-driven testing involves using different sets of data to test your unit tests. This helps to ensure that your unit tests are not brittle and that they can handle different input values.
  • Use mocks and stubs to isolate your unit tests from external dependencies. A mock is a fake object that can be used to simulate the behavior of an external dependency. A stub is a fake object that can be used to return predetermined values. Using mocks and stubs can help to make your unit tests more isolated and reliable.

Unit testing is a valuable tool that can help you to write better code. By following these tips, you can start writing unit tests in C# and improve the quality of your code.

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