In rails, how do you stub the render method in functional tests?

Question

I'm writing some functional tests for a controller in rails, using mocha to do mocking/stubbing.

Is there a way to prevent the template from being rendered during the test, so that I can test only the code in the controller?

It looks like rspec provides something like this, but I'm not using rspec.

Answer 1

Would render_to_string do what you need?

Answer 2

The most obvious solution seems to work:

@controller.expects(:render)

I could have sworn that I tried that last night with no luck. But this morning it works like a charm. I must have overlooked a typo.

Answer 3

It doesn't look like using stub is necessary here. If you want to make sure that a given template is rendered, use assert_template and/or assert_response. You can also assert a state of the response object, either by hand or using helpers like assert_select.