tests: we should not hit the live endpoint for our tests, we should mock them

[Zidious]

As we keep on adding more and more tests, we shouldn't really hit the live CG endpoints for our tests.

We should utilise nock and mock the response we expect from the endpoint(s).

This has one limitation, that being if the endpoint changes (structure and/or properties added/removed) the mocked shape will no longer be accurate