jest-cheat-sheet
Enzyme
jest-cheat-sheet | Enzyme | |
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2 | 33 | |
5,249 | 19,961 | |
- | -0.1% | |
1.8 | 6.7 | |
10 months ago | 2 months ago | |
JavaScript | ||
Creative Commons Zero v1.0 Universal | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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jest-cheat-sheet
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React component testing with Jest and React Testing Library
Jest cheat sheet
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Study Notes for Kent C. Dodds' Javascript Testing Course
Jest - https://jestjs.io/docs/en/getting-started Jest Cheat Sheet - GitHub - sapegin/jest-cheat-sheet: Jest cheat sheet Jest Dom - GitHub - testing-library/jest-dom: Custom jest matchers to test the state of the DOM Testing Library / React Testing Library - https://testing-library.com/docs/ Cypress: https://docs.cypress.io/guides/overview/why-cypress.html#In-a-nutshell BrowserStack - https://www.browserstack.com/docs/ Applitools - Applitools: Automated Visual Testing with Visual AI
Enzyme
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The best testing strategies for frontends
Probably Enzyme was the first to popularize component testing in React by doing shallow rendering and expecting some things to be there in the React component tree. Then React Testing library came and took component testing to a whole new level.
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Testing React Components: A Comprehensive Overview of Testing Libraries
Enzyme is another popular testing utility for React. It allows you to manipulate and traverse React components' output, making it easier to write comprehensive tests.
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Speeding up the JavaScript ecosystem – Polyfills gone rogue
ljharb is an extremely interesting person. There’s no doubting the positive impact he’s had on the OSS community and the work he’s done.
However, there are some things he does that are incomprehensible.
For example, Enzyme. Over three years ago this issue was opened for Enzyme on React 17: https://github.com/enzymejs/enzyme/issues/2429
Nothing moved for a while, and I think he said something along the lines of “if you want React 17 support, stop complaining and help”. So the community got involved. There are multiple PRs adding React 17 support. Many unofficial React 17 adapters. A lot of people have put a lot of work into this, ensuring compatibility, coverage etc. Yet to this day, none of them have been merged. Eg https://github.com/enzymejs/enzyme/pull/2564
Given the amount of time that has passed, and the work the community has put in, something is amiss. It feels like he’s now intentionally avoiding React 17+ support. But why? I don’t understand why someone would ask for help then ignore the help when it comes in. That isn’t much better than the swathe of rude/entitled comments he was getting on the issue before he locked it.
I ended up migrating to RTL, but this made many of my tests more complicated (especially compared to shallow rendering).
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Mastering React Testing: A Comprehensive Guide to Jest, Enzyme, and React Testing Library
Enzyme Documentation
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How To Scale Your React Applications
One way to do this is by writing tests for your React components. Tools like Jest and Enzyme make it easy to test your component's behavior, rendering output, and state changes. By writing tests for your components, you can ensure that they behave as expected and prevent issues before they reach production.
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Top OpenAI Tools, Examples & Use Cases
GitHub link: https://github.com/enzymejs/enzyme
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How to Confidently Write Unit Tests using React Testing Library
So If you have experience with enzyme testing, where you might be checking the value of state once you click any button or you might be checking the prop value If something changes.
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Difference Between JEST and Enzyme?
Enzyme offers two types of API for shallow rendering and full rendering. Both are preferred for different test scenarios and functionalities.
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Testing with Jest and React Testing Library
At Visa, I was writing unit tests for a Next.js project using components designed with Chakra UI. That's where React Testing Library came in handy. Unlike other solutions like Enzyme, I did not have to worry about the application snapshot but could instead focus on each UI element, its expected behaviour and the data it would render upon user interactions.
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Superset: Testing and Enzyme to RTL conversion
Superset uses Jest and React Testing Library (RTL) to write unit and integration tests. In the past we used Enzyme, but now that we're currently converting all of our class components to functional components, Enzyme cannot support our testing needs. Since RTL is better for testing functional components, we're converting all of our test files to RTL. This can be quite a learning curve - I've gone through a lot of the process so I'd like to share what I've learned so far.
What are some alternatives?
jest-dom - :owl: Custom jest matchers to test the state of the DOM
react-testing-library - 🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
Cypress - Fast, easy and reliable testing for anything that runs in a browser.
Sinon.JS - Test spies, stubs and mocks for JavaScript.
jest-glamor-react - Jest utilities for Glamor and React
WebdriverIO - Next-gen browser and mobile automation test framework for Node.js
semantic-ui-react - The official Semantic-UI-React integration
jest - Delightful JavaScript Testing.
test-data-bot
react-hook-form - 📋 React Hooks for form state management and validation (Web + React Native)
test-cypress-darkmode - an MVP to test cypress loading darkmode with styled components
Jooks (Jest ❤ + Hooks 🤘🏻) - Testing hooks with Jest