How can I mock dependencies in ASP.NET Core tests?

How can I mock dependencies in ASP.NET Core tests?

You can use libraries like Moq or NSubstitute to create mock objects for your dependencies in ASP.NET Core tests.

Can you show me a simple example using Moq?

Sure! First, install Moq via NuGet. Then, you can create a mock like this:

var mockService = new Mock<IMyService>();
mockService.Setup(s => s.GetData()).Returns(expectedData);

What about testing controllers with mocked services?

You can inject the mocked service into your controller's constructor and then test the controller actions as usual.

Are there any best practices for mocking?

Yes, keep your mocks simple, avoid over-mocking, and ensure your tests are still meaningful and reflect real scenarios.