[IMPROVEMENT] Find a way to mock `template_renderer`

[thealphadollar]

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Unittests for mod_auth were added in #302 but we were not able to mock template_renderer which decorates a lot of the functions and due to this the testing is not rigorous.

Here is an example testcase which fails to mock template_renderer.

A way is required to mock the same and improve the testing.

[thealphadollar]

A way to bypass login_required decorator is to create a dummy user and login with the same for the duration of the request.

[satyammittal]

@thealphadollar yes, there is already lot of tests bypass login_required. you can follow the same technique. https://github.com/CCExtractor/sample-platform/blob/master/tests/test_customized/TestControllers.py#L22

[thealphadollar]

@satyammittal Mocking it is also easy, I need to find a way to mock template_renderer :D