Jest does wait for promise to resolve

Question

You can also use the .resolves matcher in your expect statement, and Jest will wait for that promise to resolve. If the promise is rejected, the test will automatically fail. If you expect a promise to be rejected, use the .rejects matcher. It works analogically to the .resolves matcher. If the promise is fulfilled, the test will automatically fail.

This is my code:

body = {
        currentPassword: "WrongPassword",
        newPassword: "UglyPassword",
};
expect(api(`users/${userId}/password`, { method: 'PATCH', json: body, headers: getAuthHeader(jwtData) })).rejects.toThrow();

body.currentPassword = "BadPassword";

The test fails because the password sent to the endpoint is "BadPassword". The documentation says that Jest WILL WAIT for promise which is not true. How can I make it wait? The test is not deterministic now.

you forgot to put await. Just put await before api it will resolve your error. — Dipak, Apr 15 '20 at 18:09
test('the fetch fails with an error', async () => { await expect(fetchData()).rejects.toThrow('error'); }); — Dipak, Apr 15 '20 at 18:10
I used this approach originally but then JEST was not able to catch the error. See this question/answer: https://stackoverflow.com/a/61214808/1639556 — Leos Literak, Apr 15 '20 at 18:11
Did you try to use native promise rather than async await.? Can you please try? — Dipak, Apr 15 '20 at 18:12
async function callUser(){ return api(`users/${userId}/password`, { method: 'PATCH', json: body, headers: getAuthHeader(jwtData) }); } expect(await callUser()).rejects.toThrow(); — Dipak, Apr 15 '20 at 18:15
I am back to yesterday trouble with HTTPError: Response code 403 (Forbidden) not caught — Leos Literak, Apr 15 '20 at 18:20
ok, the only workaround is to tell GotJS not to throw exceptions' — Leos Literak, Apr 15 '20 at 18:21
I think you should use this way.. can you try ? http://dpaste.com/3HXGAZ2 — Dipak, Apr 15 '20 at 18:22
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/211743/discussion-between-leos-literak-and-dipak-chavda). — Leos Literak, Apr 15 '20 at 18:25

Jest does wait for promise to resolve

0 Answers0