All tests from SW registration on fail for me

[tdd]

Hey there,

So I'm using Chrome 66.0.3355.0 on OSX High Sierra, with a backend running on Node 9.3, and all tests fail from the SW registration onwards. It seems the SW either doesn't get registered, from the tests' POV, or something.

Everything works fine in terms of actual behavior, but the tests don't seem to detect any of it correctly from SW reg onwards. I don't see any error logging in the :8889 server or anything. Silent fails.

Would be lovely to have working tests!