You can run tests to validate your modifications.

Post PR #10291, py.test is used as the test runner. Testing dependencies are in requirements-test.txt, so pip install -r requirements-test.txt first.

Most of the tests run against a live instance of the WebUI. You can start the WebUI server with a suitable baseline configuration with the --test-server argument, but you may want to add e.g. --use-cpu all --no-half depending on your system.

Once the server is running, you can run tests with just py.test.