-
-
Save dennyweiss/da3819c829990b18dc31bd1b5e8df970 to your computer and use it in GitHub Desktop.
Easily check ILogger<T> interactions with ASP.NET Core Logging and Moq
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
using Microsoft.Extensions.Logging; | |
using Moq; | |
using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Threading.Tasks; | |
using Xunit; | |
namespace Knaap.Utilties | |
{ | |
public class SimpleLogCheck | |
{ | |
[Fact] | |
public void TestLog() | |
{ | |
var loggerMock = LoggerUtils.LoggerMock<SimpleLogCheck>(); | |
loggerMock.Object.LogInformation("test"); | |
loggerMock.VerifyLog(LogLevel.Information, "test"); | |
} | |
} | |
public static class LoggerUtils | |
{ | |
public static Mock<ILogger<T>> LoggerMock<T>() where T : class | |
{ | |
return new Mock<ILogger<T>>(); | |
} | |
/// <summary> | |
/// Returns an <pre>ILogger<T></pre> as used by the Microsoft.Logging framework. | |
/// You can use this for constructors that require an ILogger parameter. | |
/// </summary> | |
/// <typeparam name="T"></typeparam> | |
/// <returns></returns> | |
public static ILogger<T> Logger<T>() where T : class | |
{ | |
return LoggerMock<T>().Object; | |
} | |
public static void VerifyLog<T>(this Mock<ILogger<T>> loggerMock, LogLevel level, string message, string failMessage = null) | |
{ | |
loggerMock.VerifyLog(level, message, Times.Once(), failMessage); | |
} | |
public static void VerifyLog<T>(this Mock<ILogger<T>> loggerMock, LogLevel level, string message, Times times, string failMessage = null) | |
{ | |
loggerMock.Verify(l => l.Log<Object>(level, It.IsAny<EventId>(), It.Is<Object>(o => o.ToString() == message), null, It.IsAny<Func<Object, Exception, String>>()), times, failMessage); | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment