• How do you unit test code that interacts with message queues or event buses ?

  • How do you approach unit testing in a microservices architecture?

  • How do you handle testing legacy code that lacks unit tests?

  • Describe your experience with test-driven development (TDD) .

  • How do you unit test code that uses configuration settings?

  • What are some strategies for testing complex logic or algorithms ?

  • How do you choose the appropriate assertion methods for different scenarios ?

  • What is the Arrange-Act-Assert pattern ?

  • How do youunit test a methodthat relies onsystem time?

  • How would you unit test a method that has no return value ?

  • Explain the concept of dependency injection and its role in unit testing.

  • How do you unit test code that interacts with external APIs? Expertise Level: Mid Level

  • How do you unit test database interactions?Expertise Level: Mid Level

  • Have you used anymocking frameworkslike Moq or NSubstitute ? Describe your experience.

  • How do you unit test multi-threaded code? Expertise Level of Developer Required to Answer this Question

  • How do you unit test asynchronous code?

  • How do you integrateunit testinginto your development workflow?

  • What are some common code coverage tools you've used?

  • What is code coverage and how important is it?

  • How do you handle exceptions in unit tests?

  • How do you test private methods?

  • How do you mock dependencies in your unit tests ?

  • What are theprinciples of good unit tests(e.g.,FIRST principles)?

  • Explain the difference between a unit test , an integration test , and an end-to-end test .

  • What are some common unit testing frameworks in .NET Core?