[API Proposal]: FakeLoggerProvider - Create FakeLogger<T>

[codin-dev]

Background and motivation

FakeLoggerProvider currently allows the creation of non-generic loggers using:

var logger = loggerProvider.CreateLogger("CustomLogger");

However, it does not support creating generic loggers of type FakeLogger<T>, which can be useful when testing logging behavior in a type-safe manner. By allowing generic loggers, we can ensure that FakeLogger instances share a common FakeLogCollector, as well as a common IExternalScopeProvider, thereby providing a consistent log collection and scope management experience across generic and non-generic loggers.

Adding support for CreateLogger<T>() will improve usability and consistency in unit tests and middleware scenarios where logging is commonly scoped to specific types.

API Proposal

New Method in FakeLoggerProvider

public FakeLogger<T> CreateLogger<T>();

Signature Details:

• T: The type for which the logger is created.
• Returns: An instance of FakeLogger<T> that utilizes the shared FakeLogCollector and IExternalScopeProvider.

API Usage

var loggerProvider = new FakeLoggerProvider();
var logger = loggerProvider.CreateLogger<MyMiddleware>();

Alternative Designs

No response

Risks

No response