Is it possible/easy to mock NLog log methods, using Rhino Mocks or similar?
Using Nuget : install-package NLog.Interface
Then: ILogger logger = new LoggerAdapter([logger-from-NLog]);
You can only mock virtual methods. But if You create some interface for logging and then implement it using NLog You can use dependency injection and in Your tests use mocked interface to see if system under test (SUT) is logging what You expect it to log.
public class SUT
{
private readonly ILogger logger;
SUT(ILogger logger) { this.logger = logger;}
MethodUnderTest() {
// ...
logger.LogSomething();
// ...
}
}
// and in tests
var mockLogger = new MockLogger();
var sut = new SUT(mockLogger);
sut.MethodUnderTest();
Assert.That("Expected log message", Is.Equal.To(mockLogger.LastLoggedMessage));
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With