This sample shows how to use MassTransit's container-based test harness with the WebApplicationFactory, without requiring the application under test to know about the test harness.
The included docker-compose.yml can be used to start RabbitMQ and Redis so that the Sample.Api project can be run and interactively tested in the browser using the Swagger UI.
The Sample.Tests project uses AddMassTransitTestHarness to replace the RabbitMQ transport and Redis saga repository with the in-memory transport and in-memory saga repository, allowing the test to run without any backing services.
This requires MassTransit 8.0.3, develop-444 or later.