Add `call-view` property to BaseRequestTestCase

[meshy]

Seems odd to me that this is a property. How were you expecting this to be used?

[LilyFoote]

self.call_view(request)

I could do:

def call_view(self, *args, **kwargs):
    return self.get_view()(*args, **kwargs)

but that's harder to test.

[meshy]

I don't see the benefit of this either way.

[LilyFoote]

It's DRYer tests. I often see something like:

view = self.view.as_view()
response = view(request)

This would become:

response = self.call_view(request)

[meshy]

¯\_(ツ)_/¯

[LilyFoote]

Not worth it.