issues with running coverage

[Jbarget]

Im having some really strange behaviour which i think is related a race condition.
Without changing anything in the code if i run npm test or npm run coverage sometimes it will ignore some tests and give me an operator fail

and sometimes it works all fine:

any ideas?

[Jbarget]

just noticed that if you comment out all the tests in mockContext.test.js then the tests run smoothly every time....