reduction_viewer views tests

[Pasarus]

Issue raised by: [developer]

This is now possible in the autoreduce-frontend repository.

What?
Behaviour of reduction_viewer.views is largely untested

The autoreduce_webapp/reduction_viewer/tests/test_view.py file contains an example test that 'uses' the web app - it logs in and then goes onto the index page, then checks if it was redirected to /overview as expected

To do

More tests that check the behaviour of functions in reduction_viewer.views should be added.

Once the requests are done, something like BeautifulSoup can be used to parse the HTML and look for specific output or structures present - thus verifying that we sent the correct response to an action.

How to test the issue is resolved
All tests should pass locally and on CI