def METHOD_NAME(app, status, warning):
    assert set(app.config.source_suffix) == {'.rst', '.test'}
    # .rst; only in :confval:`source_suffix`
    assert '.rst' not in app.registry.get_source_parsers()
    assert app.registry.source_suffix['.rst'] is None
    # .test; configured by API
    assert app.registry.source_suffix['.test'] == 'test'
    assert 'test' in app.registry.get_source_parsers()
    assert app.registry.get_source_parsers()['test'].__name__ == 'TestSourceParser'