Collectives™ on Stack Overflow

Find centralized, trusted content and collaborate around the technologies you use most.

Learn more about Collectives

Teams

Q&A for work

Connect and share knowledge within a single location that is structured and easy to search.

Learn more about Teams

When should each of these methods be called, and why?

const spyStart = spyOn(el, 'func1');
expect(spyStart).toHaveBeenCalled();
const spyStart = spyOn(el, 'func1');
expect(spyStart).toBeCalled();
                Yes; you can see in the source code they're both the return value from the same matcher factory: github.com/facebook/jest/blob/…, github.com/facebook/jest/blob/…
– jonrsharpe
                Jul 28, 2020 at 8:49
                The difference is that toHaveBeenCalled is more grammatically correct but takes 6 letters more to type. toHaveBeenCalled was inherited from Jasmine.
– Estus Flask
                Jul 28, 2020 at 8:52
Actually .toBeCalled is an alias to .toHaveBeenCalled, so they do the same thing.
From the docs:
.toHaveBeenCalled() Also under the alias: .toBeCalled()
        
Thanks for contributing an answer to Stack Overflow!
Please be sure to answer the question. Provide details and share your research!
But avoid …
Asking for help, clarification, or responding to other answers.
Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.