jest-styled-components | 🔧 💅 Jest utilities for Styled Components | Unit Testing library
kandi X-RAY | jest-styled-components Summary
kandi X-RAY | jest-styled-components Summary
A set of utilities for testing [Styled Components] with [Jest] This package improves the snapshot testing experience and provides a brand new matcher to make expectations on the style rules.
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Top functions reviewed by kandi - BETA
- Checks if the passed style matches the expected one .
jest-styled-components Key Features
jest-styled-components Examples and Code Snippets
Lines of Code : 23License : Strong Copyleft (CC BY-SA 4.0)
Copy// unit test
import React from "react";
import { render } from "@testing-library/react";
import CartDropdown from "../cart-dropdown";
//add the below and remove entry for snapshotSerializers in jest config
import 'jest-styled-components'
Community Discussions
Trending Discussions on jest-styled-components
QUESTION
Got this error after upgrading webpack from 4 to 5.
I saw this error on many other questions, but nothing seems to solve my issue.
This are my dependencies:
...ANSWER
Answered 2021-Oct-26 at 14:59The problem was the version of webpack-dev-plugin, I had to update to 5.2.1 With that, the app is running fine again with webpack 5.
No further configuration change was needed in my case
QUESTION
I am trying to setup Storybook from scratch for a new project. I am hitting a wall and finding no useful information online around a babel/webpack issue that appears during build.
Note that I am able to correctly run Storybook locally, this issue only happens during build time.
The project has no webpack.config.js file as none came via the following commands.
How to diagnose further and fix the build issues?
Initial Set-up
- React Boilerplate: https://react-boilerplate.github.io/react-boilerplate-cra-template/
- Storybook out of the box set-up: https://storybook.js.org/docs/react/get-started/install
No issue running storybook locally
...npm run storybook --debug-webpack
ANSWER
Answered 2020-Dec-18 at 19:37By default the react template uses a webpack config which is in a different directory. Replacing the build directory app by stories fixed it.
internals\webpack\webpack.base.babel.js
QUESTION
I am writing a web app on next js(with typescript and styled-component). I started writing tests and when using mount, an error crashes
...ANSWER
Answered 2020-Oct-29 at 18:22This problem happens because of the version enzyme-adapter-react-16 compared to your react version at 17 that is not compatible.
You can either downgrade to react 16 or fall back to a temporary solution described here to upgrade the enyzme adapter: https://github.com/wojtekmaj/enzyme-adapter-react-17
QUESTION
I am testing a React app with Jest & Enzyme. When I run npm run test I get the error in UserContext.jsx that is imported in MainPage.jsx. How can I fix that?
Error message
Invariant Violation: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons: 1. You might have mismatching versions of React and the renderer (such as React DOM) 2. You might be breaking the Rules of Hooks 3. You might have more than one copy of React in the same app
...ANSWER
Answered 2020-Sep-06 at 10:16The error says what is the problem:
Hooks can only be called inside of the body of a function component
Here the hook is incorrectly used outside the component:
QUESTION
I am seeing this issue 100% of the attempts at building webpack for production.
I've tried the approach mentioned on the other similar StackOverflow issues which is NODE_OPTIONS=--max_old_space_size=8192
my build command is:
...ANSWER
Answered 2020-Jul-30 at 14:16If your build takes longer than 10m without output this will happen.
You can use travis_wait to print something to the console each minute, as per the docs: https://docs.travis-ci.com/user/common-build-problems/#build-times-out-because-no-output-was-received
Just travis_wait {your_command} and you should be good to go.
Be aware that your build taking longer than 10m could be a indicator of a more complicated underlying problem/freeze.
QUESTION
I am trying to create a reusable React component with Material UI and npm link it to a different application. The component and application are being bundled using webpack. The application renders the component fine in development, but when I bundle the application the component starts breaking the material-ui styling.
Some of the solutions I have tried include:
- https://material-ui.com/getting-started/faq/#why-arent-my-components-rendering-correctly-in-production-builds
- https://reactjs.org/warnings/invalid-hook-call-warning.html
I thought defining @material/core in the peerDependencies would solve it, but every time I use a Material-UI component the application throws the Invalid Hook Call Warning.
Nothing seems to work ☹️
component's package.json:
...ANSWER
Answered 2020-Feb-10 at 00:57This actually makes perfect sense if you check out the docs on npm link:
First, npm link in a package folder will create a symlink in the global folder {prefix}/lib/node_modules/ that links to the package where the npm link command was executed.
Note that the command only makes a symlink locally so when you build/deploy, it would logically follow the package can't be found.
My advice would be to create a scoped package for your custom component. Create an npm account, upload your package and then add it to your project like this:
npm install @brettoberg/reusable-component
Now, webpack and any other system should be able to find it because it's published.
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