[Feature request] built in function spying

[edwmurph]

Any thoughts on implementing function spying? Specifically it would be nice if I could determine things about injected mocks like:

• callCount: how many times the function was called
• calledWith: what arguments the function was called with etc.

Currently I'm getting around this by using sinon with rewire but it would be nice if rewire was an all in one solution.

[spik3r]

+1 I agree this would make writing tests much simpler & cleaner... I also don't like needing multiple frameworks.