Moq quiz

Test your Moq knowledge with a free interactive quiz — 20 questions with answers and explanations. No signup needed to play.

What is a reasonable comparison between Moq and NSubstitute, another popular .NET mocking library?

1. What is a reasonable comparison between Moq and NSubstitute, another popular .NET mocking library?
2. What is `MockBehavior.Strict` versus the default `MockBehavior.Loose` in Moq?
3. What is the difference between `Times.Once`, `Times.Never`, and `Times.AtLeastOnce` when used with `.Verify()`?
4. What does mocking a dependency's interface (rather than testing against the real concrete implementation) allow a unit test to achieve?
5. How would you configure a Moq mock to throw an exception when a specific method is called, to test error-handling logic?
6. What is the basic syntax for creating a mock of an interface with Moq?
7. What is Moq?
8. Why does Moq require the mocked type to be an interface, an abstract class, or a class with virtual members -- rather than being able to mock any arbitrary sealed class?
9. What is the purpose of setting up a mocked property (rather than a method) with Moq, e.g. `mockConfig.Setup(c => c.IsEnabled).Returns(true);`?
10. How does Moq handle mocking async methods (returning `Task<T>`)?
11. What is a `MockRepository` in Moq, and when would a test use one instead of creating individual `Mock<T>` instances directly?
12. What is the purpose of `.Callback()` in a Moq setup?

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