Feature request: Treat warnings as errors

[DianaLaa]

If an unexpected call occurs to the mock, I want my tests to fail.
It would be great if there was some MockBehavior.Strict mode, that does not do console.warn but throws an error instead.

[wheresrhys]

This is the default behaviour, but any call to .catch(), .spy() or setting fallbackToNetwork: true overrides this. I suspect one of those might be getting applied in your code