BunsenBurner.Logging 2.2.0

Bunsen Burner Logging

This provides a set of logging abstractions that allow for assertions to be made against logging done by the SUT.

Getting Started

To use this library, simply include BunsenBurner.Logging.dll in your project or grab it from NuGet, and add this to the top of each test .cs file that needs it:

using BunsenBurner.Logging;

What?

There are two types,

1. DummyLogger - Implementation of an ILogger that logs to an in-memory thread safe collection
2. LogMessageStore - Thread safe message sink that is designed to be shared across instances of DummyLogger

Both types extend IEnumerable of LogMessage, so can be easily used in assertions.

For further details check out the unit tests or code.

How to use

To start using it import the logger and create an instance of it,

using BunsenBurner.Logging;

var logger = DummyLogger.New<object>();

logger.LogInformation("Some log message");

// assert against the logger instance
Assert.Contains(logger, x => x.Message == "Some log message");

or replace the log provided in the DI container

using BunsenBurner.Logging;

var store = LogMessageStore.New();

service.AddDummyLogger(store);
var sp = service.BuildServiceProvider();
var logger = sp.GetRequiredService<ILogger<object>>();
logger.LogInformation("Some log message");
// assert against the shared log message store
Assert.Contains(store, x => x.Message == "Some log message");