Questions tagged [jest-fetch-mock]
99 questions
3
votes
1 answer
Using Jest even after doing fetch.mockResponse actual fetch is getting called
I am new to react and trying to writing my first test case using Jest. I have to mock a fetch response. I am using jest-fetch-mock. But the call is going to actual fetch and data returned is undefined.
package.json :
"jest-fetch-mock":…
Swati Joshi
- 105
- 3
- 14
3
votes
0 answers
How to return an array with jest-fetch-mock?
I need to mock an fetch call which returns an array with Jest Fetch Mock:
https://jsonplaceholder.typicode.com/todos/
it ('', () => {
const wrapper = render ();
fetch.mockResponseOnce (
JSON.stringify ([
{
id:…
Evanss
- 23,390
- 94
- 282
- 505
2
votes
0 answers
How to mock AWS Auth.sign up/in API inside reactJs project
I'm starting with AWS-Cognito and the reactJs app, the service is working very well.
I want to test this function using react-testing-library and Jest.
I don't know how to mock the response Promise received from Auth.signUp(email, password)…
Tarek
- 51
- 3
2
votes
0 answers
An update to MsalAuthenticationTemplate ran an effect , error when writing unit test with jest in reactjs
I am writing unit tests with jest, my unit tests are running but I am always getting below error.
Due to this error, it does not show coverage and test description which ran successfully
console.error
Warning: An update to…
Mandeep Singh
- 1,287
- 14
- 34
2
votes
0 answers
Test onClick with Jest Mock Function
I built a react app where I'm trying to get myself more confortable with testing, yet I'm quite stuck trying to test a button from my component. The documentation is very vague and I have not found any solution to my case.
The onClick method is…
Fer Toasted
- 1,274
- 1
- 11
- 27
2
votes
0 answers
Fetch-Mock Error. No fallback response defined for POST
I need to test an asynchronous function (redux thunk) in jest. To do this, I decided to use fetchMock. But I'm having problems. The test ends successfully but I get an error from fetch
'fetch-mock: No fallback response defined for POST to http://…
Ilya K
- 93
- 8
2
votes
0 answers
jest-fetch-mock: mocks only work if they are declared in components
I'm trying to test a React app with Rails backend. I'm trying to write tests in jest.
I'm using jest-fetch-mock node module to mock API calls. For some reason, it doesn't work properly.
This works, but fails in tests
//PhoneCodeList.jsx
class…
Steve Redka
- 108
- 1
- 10
2
votes
0 answers
Many issues with jest-expo -- "TypeError: Cannot read property 'fetch' of undefined"
I've searched many a thread on this issue on the site but none of them have answers or answers that work for me. I have a jest unit test suite that I'm attempting to run but keep getting Test suite failed to run -- TypeError: Cannot read property…
Chase Small
- 321
- 3
- 13
2
votes
1 answer
React Native with TypeScript: How to set up globals in setup.js?
I'm building a React Native app with TypeScript.
I want to use jest-fetch-mock. In the documentation it says to create setup.js file and add
global.fetch = require("jest-fetch-mock");
in it. I did that. But I get the error:
[ts] Cannot compile…
J. Hesters
- 13,117
- 31
- 133
- 249
2
votes
1 answer
Click Handle on Jest
I am writing a test case using jest, but I am not able to get how to test click simulation if it is not button.
If it is button we write find('button), but what if we click on div and there are nested div
class Section extends React.Component {
…
Shyam Kumar
- 586
- 3
- 17
1
vote
0 answers
How to write test case using react testing library
const { UserData, UserSessionComplete } = useSelector((state) => state?.header);
How to get this declaration under coverage.
Indushree N
- 73
- 1
- 6
1
vote
1 answer
"Expected signal to be an instanceof AbortSignal? with Jest Fetch Mock
I am testing an rtk query mutation api call. I'm trying to match the mock result to a successful api call but I always get an error: 'Expected signal to be an instanceof AbortSignal'. I understand that this may be a side effect of jest-fetch-mock…
Eleanor Tay
- 39
- 1
- 5
1
vote
0 answers
JEST: after mocking response from API, the data is not set in component
Index.js
`
import React, {useEffect} from 'react'
import store from '../store_path'
import loadable from '@loadable/component'
import { apiCall } from './apiService_path'
import useTokenHook from 'hook_path'
const ChildComponent = loadable(() =>…
Urvesh Nagda
- 21
- 3
1
vote
1 answer
jest test case is failing for react functional component
My code is failing when i run this test.
I have tried
await expect(API().isFileAvailable).rejects.toEqual(Promise.reject(new Error('Bad input')));
But this doesn't work
File: async (a: string, b: string | undefined, c: string | undefined) => {
…
Iliyas Shaik
- 108
- 5
1
vote
0 answers
How to test api call using method POST with jest?
I'm trying to mock API call with library calls 'jest-when'.
It works correctly When I call method GET, but it doesn't work when it's method POST.
The API call that I want to mock is here
const use = () => {
fetch(
…
Yuzu
- 59
- 1
- 8