Introduction

Welcome to Wolfgang.Extensions.Logging.InMemoryLogger.

Overview

Wolfgang.Extensions.Logging.InMemoryLogger is a .NET library that provides ILogger and ILogger<T> implementations which capture log entries in an in-memory buffer. It is designed for unit and integration tests where you need to assert that production code logged the messages you expect.

Key Features

  • Two logger shapes. InMemoryLogger (non-generic, category passed as a string) and InMemoryLogger<T> (generic, category derived from typeof(T)) — matches the standard Microsoft.Extensions.Logging ILogger / ILogger<T> pair.
  • Captured entries. LogEntries returns IReadOnlyList<LogEntry<object>> from Microsoft.Extensions.Logging.Abstractions so the captured entries plug directly into LINQ and xUnit asserts.
  • Scope capture. BeginScope records the supplied state object into the Scopes property so scope-aware code paths can be asserted on.
  • Configurable. Constructor parameters control the minimum log level (defaults to Trace) and the initial buffer capacity (defaults to 16).
  • Thread-safe. Concurrent Log calls append safely.
  • Multi-targeted. Ships for net462, netstandard2.0, netstandard2.1, net8.0, and net10.0.

Getting Help

If you need help with Wolfgang.Extensions.Logging.InMemoryLogger, please:

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