jest-image-snapshot
jest
jest-image-snapshot | jest | |
---|---|---|
7 | 473 | |
3,776 | 43,581 | |
0.3% | 0.3% | |
5.8 | 9.5 | |
18 days ago | 6 days ago | |
JavaScript | TypeScript | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
jest-image-snapshot
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How to test chart components in react?
You can give a try about visual testing. I think about Cypress components and Cypress Image snapshot or Jest Image snapshot (not DOM testing)
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Way to High Confidence: The Ideal Testing Trophy
puppeteer + jest-image-snapshot
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React-pdf testing
A combination of https://github.com/americanexpress/jest-image-snapshot and whichever of https://www.npmjs.com/search?q=keywords:pdf%20to%20png renders your PDF the best should work.
- How to test HTML5 canvas with jest?
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Visual unit tests
We liked matcher functionality provided by jest-image-snapshot, so we just took this solution and adopted for jasmine and Karma.
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Automated visual regression testing with TypeScript, Puppeteer, Jest and Jest Image Snapshot
Github repository of Jest-image-snapshot: https://github.com/americanexpress/jest-image-snapshot
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Image Snapshot Testing with Mocha
Snapshot testing itself is a built-in feature of Jest, and when searching specifically for image snapshots, you'll quickly find jest-image-snapshot, which does great work comparing and updating image snapshots. It also provides convenience features like a base64 diff output, which allows us to view the diff from a CI environment (since the diff image file cannot be saved or viewed).
jest
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What is an Abstract Syntax Tree in Programming?
GitHub | Website
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Top 10 Tools Every React Developer Needs in 2024
Jest
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API Testing with Clerk and Express
you have selected a testing framework. In my case, it's Jest with Supertest
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JS Toolbox 2024: Bundlers and Test Frameworks
Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.
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Testing library for Node.js and React
Jest (https://jestjs.io/)
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Unit Testing Expo Apps With Jest
console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation
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Easily create mock data for unit tests 🧪
Note: I will be using Jest as testing framework throughout the examples.
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Painless CLI integration testing
We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!
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What is integration testing in UI/Front End?
Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.
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13 best React debugging tools
Jest is a well-regarded JavaScript testing framework primarily designed for React applications, although its utility extends to projects using Babel, JavaScript, Node, Angular, and Vue. Created by Facebook, Jest emphasizes ensuring the correctness of JavaScript codebases. It allows developers to write tests with a familiar, feature-rich API, making the testing process swift and enjoyable.
What are some alternatives?
svelte-jester - A Jest transformer for Svelte - compile your components before importing them into tests.
tap - Test Anything Protocol tools for node
mocha-chai-snapshot - Chai hook for capturing snapshots and comparing
vitest - Next generation testing framework powered by Vite.
nodebestpractices - :white_check_mark: The Node.js best practices list (February 2024)
Cucumber.js - Cucumber for JavaScript
jest-canvas-mock - :last_quarter_moon: A module used to mock canvas in Jest.
Sinon.JS - Test spies, stubs and mocks for JavaScript.
puppeteer - Node.js API for Chrome
nyc - the Istanbul command line interface
expect-mocha-image-snapshot - A wrapper around jest-image-snapshot that makes it compatible to Mocha.
WebdriverIO - Next-gen browser and mobile automation test framework for Node.js