jest VS mocha

Compare jest vs mocha and see what are their differences.

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jest mocha
354 108
40,819 21,771
0.6% 0.2%
9.9 7.7
2 days ago 6 days ago
TypeScript JavaScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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

Posts with mentions or reviews of jest. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-12-01.
  • How to Confidently Write Unit Tests using React Testing Library
    7 projects | dev.to | 1 Dec 2022
    We cannot only use the testing library alone, but we also need to install Jest which exposes extensively used global expect function and other things which help to make assertions in our test cases.
  • How I go with react native in late 2022
    33 projects | dev.to | 27 Nov 2022
    There's nothing better than jest and testing-library/react-native in react-native. these tools are suitable for unit and integration tests and they have great community support, utils, and helper functions.
  • Adding Tests for ESM using Jest framework
    2 projects | dev.to | 25 Nov 2022
    Jest is a testing framework for Javascript projects. It ensures that the implemented core functionality of the codebase is not prone to errors by allowing developers to write convenient tests.
  • Nodejs Boilerplate with Typescript and Express
    4 projects | dev.to | 24 Nov 2022
    Jest
  • OSD600 - Telescope - Testing for feed URLs
    4 projects | dev.to | 20 Nov 2022
    However, while running the tests using jest would result in a pass, the expectations would actually fail and the failure result would show up after the tests have already ended. I was confused as to why was happening for a while. Eventually, I noticed this in the file:
  • Auto-run Tests: Test Via Continuous Integration
    2 projects | dev.to | 17 Nov 2022
    There was another repo I tried to add test for, and it uses the same setup as mine. It uses JavaScript and achieve CI via GitHub Action, except that it also run test for version 14.x and 16.x of Node.js. Given both repo use Jest for testing, It's pretty easy to write test for the repo. I needed to spend time to understand the code and then run test coverage and see the existing tests to see what's needed to be done.
  • Making sure izyum is fresh
    3 projects | dev.to | 14 Nov 2022
    Two testing engines are usually used for testing purposes in the ECMAScript world which are jest and mocha. I had previous experience with both of them and to be honest I don't see big differences between them on the basic level. I decided to go with it just because it is more popular and I did use it with typescript before so I did know it had good types of support.
  • Conditional Logging to the JavaScript Console
    4 projects | dev.to | 14 Nov 2022
    The console created by createDebugConsole will not be active in unit tests, so you won't be able to use it to prevent logging in your test environment. If you use jest you can silence console methods with the jest CLI.
  • Ng-News: Episode 22/45
    2 projects | dev.to | 14 Nov 2022
    Jest 29.3 Release Notes
  • JavaScript testing with Jest
    3 projects | dev.to | 13 Nov 2022
    I chose Jest, as it is one of the most used testing frameworks for JavaScript and most of my tool's logic is written in JS. It was developed by Facebook and is open-source. Jest also has CLI option for checking coverage which is very great, it shows which lines of code have been tested and not and prints a beautiful report.

mocha

Posts with mentions or reviews of mocha. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-11-16.
  • Battle-Testing Nx Console with E2E Tests
    6 projects | dev.to | 16 Nov 2022
    Integration Tests combine multiple parts of your software and test them together. They are a good option for testing some behaviour of extensions. If you read the docs, they suggest using the @vscode/test-electron package and mocha. This will allow you to run tests inside an actual VSCode instance, so you avoid mocking. However, you are still constrained. The API gives limited information on many areas. For example even this very simple test is not easily realizable with the VSCode API:
  • Making sure izyum is fresh
    3 projects | dev.to | 14 Nov 2022
    Two testing engines are usually used for testing purposes in the ECMAScript world which are jest and mocha. I had previous experience with both of them and to be honest I don't see big differences between them on the basic level. I decided to go with it just because it is more popular and I did use it with typescript before so I did know it had good types of support.
  • Adding tests to my SSG
    3 projects | dev.to | 10 Nov 2022
    This week I added some testing tools to my SSG. The project now uses Jest for testing. I chose to use Jest because it is a very popular testing framework for JavaScript. I contemplated using Mocha, but after doing some research, decided Jest was easier to use out of the box. Installing Jest was easy. All I had to do was install it using npm: npm install --save-dev jest.
  • Top 15 Must Have Tools For JavaScript Developers
    9 projects | dev.to | 9 Nov 2022
    MOCHA: Mocha is a simple and flexible testing framework based on the javascript. It also offers asynchronous testing and also you can use any assertion library with it. For more info: https://mochajs.org/
  • Boilerplate for Typescript-Express with sequelize ORM
    14 projects | dev.to | 8 Nov 2022
    Testing: unittests using Mocha
  • Implement DevSecOps to Secure your CI/CD pipeline
    54 projects | dev.to | 27 Sep 2022
    In Unit tests, individual software code components are checked if it is working as expected or not. Unit tests isolate a function or module of code and verify its correctness. We can use tools like JaCoCo for Java and Mocha, and Jasmine for NodeJS to generate unit test reports. We can also send these reports to SonarQube which shows us code coverage and the percentage of your code covered by your test cases.
  • New Solana Dev Guide
    6 projects | dev.to | 26 Sep 2022
    You should definitely write tests if you want to be a responsible coder. Anchor tests use mocha, so you should get familiar with the framework.
  • Best test framework for Node in 2022?
    5 projects | reddit.com/r/node | 18 Sep 2022
    We use Mocha with Chai for tests - works perfectly. We use c8 for coverage, which is a drop-in replacement for nyc which doesn't (or didn't when we switch) support import. We then use husky for managing git hooks, such as ensuring all tests pass to allow a push (which can be forced through if needed).
  • Is using Jest for anything other than React a bad idea?
    3 projects | reddit.com/r/node | 12 Sep 2022
    Jest is a JavaScript runtime developed by Facebook that is usually used for testing. Because Jest is designed primarily for testing React applications, using it to test Node.js server-side applications comes with a lot of caveats. We strongly recommend using a different testing framework, like Mocha.
  • Learnings on Testing & Deployments of UI and BFF in CICD Pipelines for AWS
    5 projects | dev.to | 2 Sep 2022
    The tradeoff? My integration tests are now run in a Lambda, and you have to do some weirdness to get 'em to work locally via Mocha/Jest, etc. It can work, but NOT traditionally how it's done. It's also not homogeneous in the same test suite setup.

What are some alternatives?

When comparing jest and mocha you can also consider the following projects:

tap - Test Anything Protocol tools for node

vitest - A Vite-native test framework. It's fast!

Cucumber.js - Cucumber for JavaScript

Sinon.JS - Test spies, stubs and mocks for JavaScript.

nyc - the Istanbul command line interface

WebdriverIO - Next-gen browser and mobile automation test framework for Node.js

ava - Node.js test runner that lets you develop with confidence 🚀

nightwatch - End-to-end testing framework written in Node.js and using the W3C Webdriver API

istanbul - Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests and browser tests. Built for scale.

Cypress - Fast, easy and reliable testing for anything that runs in a browser.

Protractor - E2E test framework for Angular apps