jest | Delightful JavaScript Testing | Testing library
kandi X-RAY | jest Summary
kandi X-RAY | jest Summary
Delightful JavaScript Testing.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of jest
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jest Examples and Code Snippets
Lines of Code : 280
License : No License
Copyvar board = '090000006\n' +
'000960485\n' +
'000581000\n' +
'004000000\n' +
'517200900\n' +
'602000370\n' +
'100804020\n' +
'706000810\n' +
'300090000';
import initStore from "lemon-state";
const initialState = {
loading: true,
lang: "ru",
data: []
};
const actions = {
onSetLoad: ({ state }, payload) => ({
loading: payload
}),
onSwitchLang: ({ state }, payload) => ({
lang:
ViewStyle;
animatedStyle={ scrollY => ({
opacity: scrollY.interpolate({
inputRange: [0, 200], // from 0 scrolled to headerMaxHeight scrolled
outputRange: [1, 0]
})
})
}
// Expects a callback returning the component to // Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
/**
* Sample React Native App
* https://github.com/facebook/react-native
*/
import React, {Component} from 'react';
import {StyleSheet, Text, View} from 'react-native';
const st // Copyright 2004-present Facebook. All Rights Reserved.
/**
* This file illustrates how to define a custom mock per test.
*
* The file contains two test cases:
* - One where the fruit module is mocked.
* - One where the fruit module is not moc // Copyright 2004-present Facebook. All Rights Reserved.
import {useState} from 'react';
const STATUS = {
HOVERED: 'hovered',
NORMAL: 'normal',
};
export default function Link({page, children}) {
const [status, setStatus] = useState(STATUS.N expect ">" {
expect "\n\s*>" {
#! /bin/sh -e
mkdir gitcommits
cd gitcommits
echo a > filea.txt
echo b > fileb.txt
git init
git add .
git commit -q -m Commit0
echo 'a*' > filea.txt
git stash
echo 'b*' > fileb.txt
git add fileb.txt
git commit -q -m Commit1
git('should call print and cancel', () => {
// spy on print and cancel on window object
const printSpy = spyOn(window, 'print');
const cancelSpy = spyOn(window, 'cancel');
// call print
component.print({/* mock component howev// since we decorated "async" let's use await...
export default async function getProduct(product_id) {
const url = `${process.env.PRIVATE_APP_URL}/products/${product_id}.json`;
const options = { method: "GET", headers: { "Content-TypeCommunity Discussions
Trending Discussions on jest
QUESTION
I am learning react js. I am a very beginner at this topic. But when I am doing setup to create a react environment I got an error. I have tried to solve the problem by Charles Stover blog in medium. But I got an error Command "up" not found.
Here's my index.js file:
...ANSWER
Answered 2021-Sep-06 at 09:40I got two different solution.
- remove
QUESTION
I have been stock on this error on my project when I add "proxy": "http://localhost:6000"
in my package.json.
This is the error response after yarn start.
Invalid options object. Dev Server has been initialized using an options object that does not match the API schema.
- options.allowedHosts[0] should be a non-empty string. error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
But everything is fine when I remove the "proxy": "http://localhost:6000".
This is on my package.json:
...ANSWER
Answered 2021-Dec-19 at 16:06Here is a workaround. Delete "proxy": "http://localhost:6000". Install package http-proxy-middleware with command npm install http-proxy-middleware --save. Create a file setupProxy.js inside your src folder. Add these lines inside:
QUESTION
I have been using github actions for quite sometime but today my deployments started failing. Below is the error from github action logs
...ANSWER
Answered 2022-Mar-16 at 07:01First, this error message is indeed expected on Jan. 11th, 2022.
See "Improving Git protocol security on GitHub".
January 11, 2022 Final brownout.
This is the full brownout period where we’ll temporarily stop accepting the deprecated key and signature types, ciphers, and MACs, and the unencrypted Git protocol.
This will help clients discover any lingering use of older keys or old URLs.
Second, check your package.json dependencies for any git:// URL, as in this example, fixed in this PR.
As noted by Jörg W Mittag:
For GitHub Actions:There was a 4-month warning.
The entire Internet has been moving away from unauthenticated, unencrypted protocols for a decade, it's not like this is a huge surprise.Personally, I consider it less an "issue" and more "detecting unmaintained dependencies".
Plus, this is still only the brownout period, so the protocol will only be disabled for a short period of time, allowing developers to discover the problem.
The permanent shutdown is not until March 15th.
As in actions/checkout issue 14, you can add as a first step:
QUESTION
I have this simple test:
...ANSWER
Answered 2021-Oct-25 at 05:17In your package.json, or jest.config.js/jest.config.js, change the value of the testEnvironment property to jsdom.
QUESTION
Wondering if anybody has some good suggestions on how to crack this. Got this test helper utils I have added some types to:
...ANSWER
Answered 2022-Mar-20 at 22:37If you look at React without JSX, you'll see that the XML-inspired syntax () is just short for React.createElement('MockComponent').
Right now, if you renamed mockComponent to MockComponent and tried using the angle bracket syntax, the first issue is that your function receives two arguments. React components are either class components that take one constructor argument (props) or functional components that take one argument (again, props). The second issue is that your function returns a React functional component, when it needs to return a rendered React element.
One way to fix this issue is to convert mockComponent into a React functional component and make module and propOverride props of the FC.
QUESTION
I am currently setting up a boilerplate with React, Typescript, styled components, webpack etc. and I am getting an error when trying to run eslint:
Error: Must use import to load ES Module
Here is a more verbose version of the error:
...ANSWER
Answered 2022-Mar-15 at 16:08I think the problem is that you are trying to use the deprecated babel-eslint parser, last updated a year ago, which looks like it doesn't support ES6 modules. Updating to the latest parser seems to work, at least for simple linting.
So, do this:
- In package.json, update the line
"babel-eslint": "^10.0.2",to"@babel/eslint-parser": "^7.5.4",. This works with the code above but it may be better to use the latest version, which at the time of writing is 7.16.3. - Run
npm ifrom a terminal/command prompt in the folder - In .eslintrc, update the parser line
"parser": "babel-eslint",to"parser": "@babel/eslint-parser", - In .eslintrc, add
"requireConfigFile": false,to the parserOptions section (underneath"ecmaVersion": 8,) (I needed this or babel was looking for config files I don't have) - Run the command to lint a file
Then, for me with just your two configuration files, the error goes away and I get appropriate linting errors.
QUESTION
In package.json file react-router-dom dependencies added. App component wrapped by BrowswerRouter , but when I wrap route by switch it says the following error Switch' is not exported from 'react-router-dom'. I deleted the package.json.lock ,node modules, installed npm again and npm install @babel/core --save. Still not working. I successfully wasted 6 hour for this. Can you please help me to fix this? why it's not importing?
Index.js
...ANSWER
Answered 2021-Nov-04 at 18:10Routes instead of Switch in react-router v6
You are using react-router-dom version 6, which replaced Switch with the Routes component
QUESTION
When testing components with s, for example in my answer to Recommended approach for route-based tests within routes of react-router, I often use the following pattern to get access to the current location for testing purposes:
ANSWER
Answered 2021-Nov-06 at 10:28React Router v6 splits apart the history into multiple pieces, for this use case the relevant parts are the navigator and the location. This change is hinted at in Use useNavigate instead of useHistory, and you can see it in the definition of the Navigator type used in the Router props:
QUESTION
My .eslintrc.json is:
ANSWER
Answered 2022-Jan-11 at 17:06It looks like you have defined custom paths in your TypeScript config (usually tsconfig.json). The import plugin doesn't know about the correct location of the TypeScript config and hence cannot resolve those paths. What you need to do, is to specify the correct path to your TypeScript config via the project parameter in the resolver options:
QUESTION
After updating my npm packages, some of the imports from the 'vue' module started showing errors:
TS2305: Module '"../../node_modules/vue/dist/vue"' has no exported member 'X'
where X is nextTick, onMounted, ref, watch etc. When serving the project, Vue says it's "failed to compile". WebStorm actually recognizes the exports, suggests them and shows types, but the error is shown regardless. Some exports like computed and defineComponent work just fine.
What I've tried:
- Rollback to the previously used Vue version "3.2.2" > "3.0.11". It makes the abovementioned type errors disappear, but the app stops working entirely, showing lots of
TypeError: Object(...) is not a functionerrors in console and not rendering the app at all. In the terminal, some new warnings are introduced:"export 'X' (imported as '_X') was not found in 'vue'where X is createElementBlock, createElementVNode, normalizeClass and normalizeStyle. - Rollback other dependencies. None of the ones that I tried helped fix the problem, unfortunately.
- Manually declare the entirety of 'vue' module. We can declare the 'vue' module exports in shims-vue.d.ts, and it actually makes the errors disappear, however, this seems like a terrible, time-consuming workaround, so I would opt out for a better solution if possible.
My full list of dependencies:
...ANSWER
Answered 2021-Aug-15 at 13:53That named exports from composition API are unavailable means that vue is Vue 2 at some place which has only default export. Since Vue 3 is in dependencies and both lock file and node_modules were refreshed, this means that Vue 2 is nested dependency of some direct dependency.
The problem needs to be investigated in lock file. It shows that @vue/cli-plugin-unit-jest@4.5.13 depends on vue-jest@3 which depends on vue@2.
A possible solution is to upgrade @vue/cli-plugin-unit-jest to the latest version, next. The same likely applies to other @vue/cli-* packages because they have matching versions.
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