Jest how to assert that function is not called

Question

In Jest there are functions like tobeCalled or toBeCalledWith to check if a particular function is called. Is there any way to check that a function is not called?

Answer 1

Just use not.

expect(mockFn).not.toHaveBeenCalled() 

See the jest documentation

Answer 2

not did not work for me, throwing a Invalid Chai property: toHaveBeenCalled

But using toHaveBeenCalledTimes with zero does the trick:

expect(mock).toHaveBeenCalledTimes(0)