fetch-mock | Mock http requests made using fetch | Mock library
kandi X-RAY | fetch-mock Summary
kandi X-RAY | fetch-mock Summary
Mock http requests made using fetch
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fetch-mock Key Features
fetch-mock Examples and Code Snippets
/* FAKE FETCH ME */
fetchMock.get('/session', function getSession(url, opts) {
const jwt = extractToken(opts)
if (!jwt || jwt !== fakeToken) {
return delay({
status: 401,
body: JSON.stringify({
det
Community Discussions
Trending Discussions on fetch-mock
QUESTION
I try to rebuild an electron app but I got this error regarding the epoll installation.
...ANSWER
Answered 2021-Nov-09 at 06:01I have a same problem too, but i am using a serialport not epoll.
So, I think the cause of this problem is electron modules not the native module.
QUESTION
I'm trying [redux toolkit][1] for the first time and haven't found helpful docs on how to test the ui response to api calls.
I have seen [jest-fetch-mock][2] suggested for mocking the calls which are a bit hidden in syntactic sugar.
currently my code works, but I can't find a good way to mock the 500 I should get from my api call to test a particular scenario. Here is the method that calls the api call in my RequestList.tsx file:
...ANSWER
Answered 2022-Feb-25 at 16:40Finally solved this! The docs for jest-fetch-mock are not very user friendly imo.
Even though I am trying to mock an error I needed to use the mockResponse() function.
fetchMock.mockResponse( JSON.stringify({ error: "Cannot read property 'state' of null" }), { status: 500 } )
where { error: "Cannot read property 'state' of null" }
is the body of the error message returned in the network tab.
For some reason the mockReject() function makes assumptions about what the error body should look like, and it was very different from what my error looked like.
QUESTION
I am testing a component that uses a useEffect
hook that fetches data from an API, updates state and then builds out the component. I've mocked the API response successfully for several tests using this Stack Overflow answer as an example. I am now trying to write a test where I mock a returned error from the API. I'm getting an error stating TypeError: Cannot read property 'then' of undefined
for fetch
. I'm trying to use the same example but with no luck.
My successful fetch mock with test data looks like:
...ANSWER
Answered 2022-Jan-15 at 18:22The difference I found is that, your successful fetch mock actually returns the Promise.
But the failing fetch mock is not returning -- notice the subtle addition of curly braces around that Promise. Can you check this without that curly brackets?
QUESTION
I'm trying to mock a fetch call using thisfetch-mock-jest but it the code still trys to go to the remote address and eventually fail with error message FetchError: request to https://some.domain.io/app-config.yaml failed, reason: getaddrinfo ENOTFOUND some.domain.io]
.
Here the the test code
...ANSWER
Answered 2021-Oct-14 at 10:50replaced
QUESTION
ANSWER
Answered 2021-May-17 at 12:34I found this answer on internet and it worked for me with some small add-ons but I will post it here maybe will help someone in future:
- install
babel-jest
,babel-preset-env
,@babel/runtime
andreact
(the last one might be possible to be necessary only if some other package requires it) - create
.babelrc
file inroot directory
and add:
QUESTION
I took the exact code sample from jest-fetch-mock npm package example and I cannot make it fail. Can anyone tell me what am I doing wrong?
This is my code:
...ANSWER
Answered 2021-Apr-15 at 07:32There are 2 possible solutions to your issue:
- Use the
expect.assertions
to make jest verify whether all assertions have been asserted and return a promise:
QUESTION
I am trying to unit test a function which sends a post request then the API returns a json object. I am trying to do this using jest and fetch-mock-jest.
Now instead of the expected payload the tested function receives {"size":0,"timeout":0}
and throws error invalid json response body at reason: Unexpected end of JSON input
. Pretty sure there is something basic I don't see. I spent way more time on this without any progress than I'd like to admit.
Edit: I am pretty new to jest and unit testing in general, so if someone has a better suggestion to go about mocking fetch, please tell me.
Test File
...ANSWER
Answered 2021-Feb-03 at 02:09You can use jest.mock(moduleName, factory, options) to mock isomorphic-unfetch
module by yourself. Don't need fetch-mock-jest
module.
E.g.
main.ts
:
QUESTION
I'm using the React testing library and Jest, and trying to mock a GET request to my backend which runs also on my localhost (on different port).
...ANSWER
Answered 2020-Dec-09 at 17:35Regarding to your case, it looks pretty easy to deal with. You don't have to need any other package to mock your endpoint. You can mock axios
directly via jest
.
Here is the idea (take a look at the inline comments where you need to add):
QUESTION
I'm using vue 3 with jest for unit tests. My component is in the .vue file, with js and css in separate files and included in the .vue via src=:
...ANSWER
Answered 2020-Dec-08 at 00:11Configure Jest to disable the test cache:
QUESTION
Running my lint script "lint": "eslint --ext .js ."
, gives me this error:
Error: .eslintrc » eslint-config-airbnb » //node_modules/eslint-config-airbnb-base/index.js » //node_modules/eslint-config-airbnb-base/rules/imports.js: Configuration for rule "import/no-cycle" is invalid: Value "∞" should be integer.
Package.json:
...ANSWER
Answered 2020-Nov-12 at 09:41According to this thread https://github.com/airbnb/javascript/issues/2331#issuecomment-724114465
you need to update eslint-plugin-import
to ^2.22.1
which supports ∞
value.
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