Mocking Component.render_to_response

[TheSteveBurgess]

This might be my lack of Python knowledge here, but I'm struggling to mock the render_to_response method on Component.

I want to be able to check that the correct context values are being passed to the method (hence wanting to mock it).

However, it looks like it's doing some juggling to allow the method to both be a class method and an instance method depending on how its called

self.render_to_response = types.MethodType(self.__class__.render_to_response.__func__, self)  # type: ignore

Am i missing something obvious? Is there a specific way you would go about mocking something like this in Python?

[JuroOravec]

So far I always tested only the output HTML, not the context, so I haven't tried mocking render_to_response.

Some options that come to mind:

1. Mock self._render() instead - this is the normalized entrypoint, and it doesn't get re-applied like the public render and render_to_response do
2. Check for the given context in get_context_data(), e.g.

   # Setup
   captured = None
   class MyTable(Component):
       def get_context_data(self):
           captured = self.input.context
   
   # Act
   MyTable.render_to_response({ "data": [1,2,3] })
   
   # Assert
   assert isinstance(captured, Context)

[TheSteveBurgess]

Ahh self._render() looks like it should do the trick :)

Thanks!