Stats
facebook/jest is an open source project licensed under MIT License which is an OSI approved license.
Jest Alternatives
Similar projects and alternatives to jest
-
-
-
Scout APM
Scout APM - Leading-edge performance monitoring starting at $39/month. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.
-
-
-
material-ui
Material-UI is a simple and customizable component library to build faster, beautiful, and more accessible React applications. Follow your own design system, or start with Material Design.
-
-
-
-
-
-
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
-
webpack
A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.
-
-
-
-
-
Posts
-
Can anyone recommend any tech (coding) companies to work for based in Bristol?
Jest is a test runner / assertion framework for Javascript and Typescript apps. You can get set up with it really quickly for testing vanilla JS/TS functions. https://jestjs.io/
-
How to Write File-Based Tests With Real Files
Alright, let's dive into it! First of all you need a testing framework. I'm going to use Mocha here, but you can also use Jest or any other framework of your choice. I'm also using expect for assertions. After that, we'll install some packages that we need to write our tests:
-
JEST: N+1-version Differential Testing of Both JavaScript Engines and Specification
Unfortunately the name has high potential for confusion: https://jestjs.io/
-
Measure execution times in browsers & Node.js
If you want to ensure the execution speed of your functions in the long run, you can make them part of your unit tests. Many testing frameworks (like Jest, Jasmine, and others) allow you to set a timeout for the execution of your test. The timeout feature can be used to mark a test as failed if the tested function takes too long to execute.
-
Automated visual regression testing with TypeScript, Puppeteer, Jest and Jest Image Snapshot
Jest + its type definition: A JavaScript Testing Framework Jest is a fully featured testing framework, developed by Facebook. It needs very little configuration and works basically out of the box.
-
Mocking framer-motion v4
At work our new UI efforts are powered by Chakra UI, which uses Framer Motion under the hood for animations. With all this work, we're testing all of it using Jest and React Testing Library (RTL).
-
Jest error not able to find modules.
The code in question was called in the globalSetup which currently is a bug in jest: https://github.com/facebook/jest/issues/6179
-
A Detailed Step-By-Step Implementation of A Full-Featured RESTful API on AWS By A Reformed J2EE Engineer
In this series of articles, I intend to provide a detailed, accurate, and step-by-step explanation of how to implement a RESTful web interface using a stack of Typescript, Node.js, Dynamoose, DynamoDB, Jest, Serverless Framework, AWS, and Amazon Cognito.
-
React Testing Library Recipes - Getting started
babel-jest: it transpiles JS files in tests. It requires @babel /core is installed. Babel is a popular JavaScript transpiler, but how to configure Babel for your project is out of the scope of this article.
jest: the testing framework. It provides the test environment, a command line tool, a simulated DOM, functions for defining tests (describe, it, test, etc.), mocking and spying utilities, functions for assertions and expectations.
-
Be Smart, Write Parameterized Tests with Jest!
A parameterised testing library for Jest inspired by mocha-each.
- Testes de unidade em JavaScript
-
Creating a modern JS library: Writing good code
For larger projects, you'll probably prefer Jest, since it supports more advanced use cases such as snapshots. You can't as easily run Jest tests in the browser, but most UI frameworks have integrations that allow for Jest testing in Node.js.
-
React Stack 2021
Jest + React Testing Library: When it comes to testing I personally prefer Jest with React Testing Library as my go-to packages and they are in fact recommended by the react official documentation. What is great about react-testing-library is that it encourages you to write tests that resemble the way the users would interact with your software this helps you avoid implementation details.
-
An introduction to @testing-library: Part 2
For the following example I will be using Testing Library in combination with the testing framework Jest and we will be unit testing a simple stateful component in React. I will also be using Yarn as my preferred package manager.