fast-check
tape
fast-check | tape | |
---|---|---|
21 | 17 | |
4,107 | 5,757 | |
- | 0.0% | |
9.8 | 8.5 | |
5 days ago | about 1 month ago | |
TypeScript | JavaScript | |
MIT License | MIT License |
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fast-check
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The 5 principles of Unit Testing
Libraries like JSVerify or Fast-Check offer essential tools to facilitate property-based testing.
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How to Survive Your Project's First 100k Lines
Strong agree!
For JavaScript, I suggest folks check out fast-check [0] and this introduction to property-based testing that uses fast-check [1].
This is broadly useful, but one specific place I've found it helpful was to check redux reducers against generated lists of actions to find unchecked edge cases and data assumptions.
[0] https://github.com/dubzzz/fast-check
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Master property-based testing in JavaScript: A step-by-step tutorial
Brilliant, this is a massive improvement. Previously I was fumbling around in https://github.com/dubzzz/fast-check/tree/main/packages/fast-check/documentation for info.
- Bring the power of property based testing framework fast-check into Vitest
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[AskJS] Should I be generating random data for parameters when unit testing?
There's a library for exactly that: FastCheck.
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Integrate Jest and fast-check together
It makes @fast-check/jest, the best option to integrate Jest and fast-check, as it provides an abstraction over both to ease their mutual integration.
- I Created an API to Generate Mock Information
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Generating dummy entities with random data for tests based on types
The closest that I know of (and I have not used this) is zod-fast-check. It generates fast-check “arbitraries” (test data generators) for property-based testing based on zod schemas. Of course, this requires that you use zod to define your types, which has some downsides. Fortunately there is another tool, ts-to-zod, (which I also have not used) which will codegen zod schemas based on TS type definitions. If you thread these four libraries together you should end up with the ability to write random tests on generated data with very little overhead. In theory.
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Best practice where to test validation?
For something like this, I might break out fast-check for testing. It’s good at generating a wide range of values for a given type, and could help you get good test coverage without having to hand-author a lot of repetitive error inputs.
- Fast-check: How it works
tape
- Having deps is a good thing, and disk space is infinite and free
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Express API Testing
Last but not least important are ava, uvu and tape; they are a really light and fast test runners.
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Unit testing: What to use, and how?
A more minimalist approach is this tape module and the TAP protocol. https://www.npmjs.com/package/tape
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Straight talk: Salary discussion thread
OK will do. Do you have any tips on finding a suitable project? Ideally I was hoping to to contribute to a piece of software that I actually use/know/like/want to improve. Given that, and my area of expertise, I had shortlisted Signal Desktop, and Tape.
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Find component by display name when the component is stateless functional, with Enzyme
Reactjs I have the following components: // Hello.jsexport default (React) => ({name}) => { return ( Hello {name ? name : 'Stranger'}! )}// App.jsimport createHello from './Hello'export default (React) => () => { const Hello = createHello(React) const helloProps = { name: 'Jane' } return ( )}// index.jsimport React from 'react'import { render } from 'react-dom'import createApp from './App'const App = createApp(React)render( , document.getElementById('app')) And I want to set up a test to see if the App component contains one Hello component. I tried the following, using Tape and Enzyme: import createApp from './App'import React from 'react'import test from 'tape'import { shallow } from 'enzyme'test('App component test', (assert) => { const App = createApp(React) const wrapper = shallow() assert.equal(wrapper.find('Hello').length === 1, true)}) But the result was that the length property of the find result was equal to 0, when I was expecting it to be equal to 1. So, how do I find my Hello component? Answer link : https://codehunter.cc/a/reactjs/find-component-by-display-name-when-the-component-is-stateless-functional-with-enzyme
- Nobody at Facebook has worked on Jest for years
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Tools for testing Functional Web Apps
For us at Begin and Architect, tape has been in use for several years. tape has a stable and straightforward API, routine maintenance updates, and outputs TAP, making it really versatile. While TAP is legible, it's not the most human-readable format. Fortunately, several TAP reporters can help display results for developers. Until recently, Begin's TAP reporter of choice was tap-spec. Sadly tap-spec wasn't kept up to date and npm began reporting vulnerabilities.
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Chaijs.com just let their domain expire
I really enjoy Ava [1] or anything assert-tape-like [2]. "uvu" [3] is getting a lot of love lately, but it's very feature limited and much of it's touted advantages are at the detriment to feature set.
[1] https://github.com/avajs/ava
[2] https://github.com/substack/tape
[3] https://github.com/lukeed/uvu
Jest is great for front-end (or full stack integration) testing, but I feel it's specialized for that use-case and doesn't always play nice with backend/middle-tier testing needs.
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Advanced Roadmap for React.js developers
-Jest -React testing library -Enzyme -Sinon -Mocha -Chai -AVA -Tape
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The React roadmap for beginners you never knew you needed.
Tape
What are some alternatives?
Unexpected - Unexpected - the extensible BDD assertion toolkit
jest - Delightful JavaScript Testing.
tap - Test Anything Protocol tools for node
trevor - 🚦 Your own mini Travis CI to run tests locally
ava - Node.js test runner that lets you develop with confidence 🚀
test-each - 🤖 Repeat tests. Repeat tests. Repeat tests.
mocha - ☕️ simple, flexible, fun javascript test framework for node.js & the browser
nyc - the Istanbul command line interface
hyperapp - 1kB-ish JavaScript framework for building hypertext applications
loadtest - Runs a load test on the selected URL. Fast and easy to use. Can be integrated in your own workflow using the API.
AVA