Cypress
jest
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Cypress | jest | |
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174 | 473 | |
46,129 | 43,553 | |
0.6% | 0.5% | |
9.8 | 9.6 | |
6 days ago | 6 days ago | |
JavaScript | TypeScript | |
MIT License | 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.
Cypress
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Simulating Internet Outage and Recovery using Cypress
In this blog post, we'll explore a Cypress test that replicates this scenario, utilizing the powerful intercept command to manipulate network requests and responses.
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Testing Defer Blocks in Angular with Cypress
Recently I came across this issue while triaging some issues at Cypress. (Shout out to MattiaMalandrone for creating an issue with clear instructions for how to reproduce). After quickly replicating the issue I sought after a solution which ultimately inspired me to write this article.
- Cypress changed older versions to block third-party plugins (ignoring lockfiles)
- Cypress can't open Tesla.com website
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What is Playwright?
While similar to Puppeteer, Cypress, and Selenium, there are some differences. Let’s find out what they are.
- Episode 23/37: ISR in Angular, Cypress & Playwright
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/Does Cypress Component Testing Work With Libraries
This questions was asked a while ago and pretty much went unanswered: https://github.com/cypress-io/cypress/issues/23677. If it doesn't work with libraries yet I will stop battling with it for now. If it doesn't work, what are you using to test libraries?
- Finally promising Web Testing solution
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Episode 23/27: NgRx 16.1 & Signal Store, Jest, Cypress, Nx
Cypress Release Notes
- Trouble/Weirdness with accessing aliased values in `this` context
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?
Playwright - Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
tap - Test Anything Protocol tools for node
Detox - Gray box end-to-end testing and automation framework for mobile apps
vitest - Next generation testing framework powered by Vite.
kafka-test-helper - Utility library that simplify testing of Node.js components that interacts with Kafka broker.
Cucumber.js - Cucumber for JavaScript
supertest - 🕷 Super-agent driven library for testing node.js HTTP servers using a fluent API. Maintained for @forwardemail, @ladjs, @spamscanner, @breejs, @cabinjs, and @lassjs.
Sinon.JS - Test spies, stubs and mocks for JavaScript.
Sentry - Developer-first error tracking and performance monitoring
nyc - the Istanbul command line interface
WebdriverIO - Next-gen browser and mobile automation test framework for Node.js