Figure out how to mock POST/PUT/PATCH

[miketaylr]

Right now we just mock GET.

cf. #712.

[karlcow]

food for thougts https://www.appneta.com/blog/python-unit-test-mock/

[brizental]

So, I guess we did figure out how to mock these. We can use the Mock, patch, MagickMock, etc.
Was there any issue that you wanted to tackle with this or you just wanted to figure out how to do it, @miketaylr ?

[karlcow]

@brizental we are probably done! :) Thanks a lot.

[miketaylr]

Yeah, what @karlcow said. Thanks!