How to unit test with ILogger in ASP.NET Core

Question

This is my controller:

public class BlogController : Controller
{
    private IDAO _blogDAO;
    private readonly ILogger _         


        

Answer 1

Merely creating a dummy ILogger is not very valuable for unit testing. You should also verify that the logging calls were made. You can inject a mock ILogger with Moq but verifying the call can be a little tricky. This article goes into depth about verifying with Moq.

Here is a very simple example from the article:

_loggerMock.Verify(l => l.Log(
LogLevel.Information,
It.IsAny(),
It.IsAny(),
It.IsAny(),
(Func)It.IsAny