How to unit test with ILogger in ASP.NET Core

by

Just mock it as well as any other dependency:

var mock = new Mock<ILogger<BlogController>>();
ILogger<BlogController> logger = mock.Object;

//or use this short equivalent 
logger = Mock.Of<ILogger<BlogController>>()

var controller = new BlogController(logger);

You probably will need to install Microsoft.Extensions.Logging.Abstractions package to use ILogger<T>.

Moreover you can create a real logger:

var serviceProvider = new ServiceCollection()
    .AddLogging()
    .BuildServiceProvider();

var factory = serviceProvider.GetService<ILoggerFactory>();

var logger = factory.CreateLogger<BlogController>();

More Related Contents:

  1. How to mock an async repository with Entity Framework Core
  2. Mocking Extension Methods with Moq
  3. Mocking HttpClient in unit tests
  4. Mocking Static Methods
  5. How to mock static methods in c# using MOQ framework?
  6. Mock static property with moq
  7. How to mock the new HttpClientFactory in .NET Core 2.1 using Moq
  8. How can I tell Moq to return a Task?
  9. Mock HttpContext for unit testing a .NET core MVC controller?
  10. Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) member…”?
  11. Using Moq to mock an asynchronous method for a unit test
  12. Is it possible to mock out a .NET HttpWebResponse?
  13. Read appsettings json values in .NET Core Test Project
  14. Using Moq to determine if a method is called
  15. Moq + Unit Testing – System.Reflection.TargetParameterCountException: Parameter count mismatch
  16. How to mock ConfigurationManager.AppSettings with moq
  17. Mocking EF DbContext with Moq
  18. Why does the property I want to mock need to be virtual?
  19. How to test method call order with Moq
  20. Integration test and hosting ASP.NET Core 6.0 without Startup class
  21. Moq: unit testing a method relying on HttpContext
  22. Moq – Non-overridable members may not be used in setup / verification expressions
  23. How do I mock User.Identity.GetUserId()?
  24. How do I Moq a method that has an optional argument in its signature without explicitly specifying it or using an overload?
  25. How to mock Controller.User using moq
  26. Unit testing with EF Core and in memory database
  27. Using Moq to override virtual methods in the same class
  28. Mocking using Moq in c#
  29. How to (should I) mock DocumentClient for DocumentDb unit testing?
  30. How to write this EF Mock setup code as a reusable Generic Boilerplate?

Leave a Comment