It is really unclear from the docs what this library does exactly (a short paragraph on it would be nice) and also how to use it
For example in the docs you have
def test_some(grpc_stub):
request = EchoRequest()
response = grpc_stub.handler(request)
assert response.name == f'test-{request.name}'
but grpc_stub is not defined nor imported anywhere - where does it come from? Similarly in the more complex example "with authentication" you have a create_channel fixture passed in which is neither declared nor imported.