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Jest

3.2K
2.5K
+ 1
167
QUnit

137
68
+ 1
16
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Jest vs QUnit: What are the differences?

Developers describe Jest as "Painless JavaScript Unit Testing". Jest provides you with multiple layers on top of Jasmine. On the other hand, QUnit is detailed as "A JavaScript Unit Testing framework". QUnit is a powerful, easy-to-use JavaScript unit testing framework. It's used by the jQuery, jQuery UI and jQuery Mobile projects and is capable of testing any generic JavaScript code, including itself!.

Jest and QUnit can be categorized as "Javascript Testing Framework" tools.

"Open source" is the primary reason why developers consider Jest over the competitors, whereas "Simple" was stated as the key factor in picking QUnit.

Jest and QUnit are both open source tools. It seems that Jest with 26.3K GitHub stars and 3.57K forks on GitHub has more adoption than QUnit with 3.83K GitHub stars and 763 GitHub forks.

Airbnb, Facebook, and Instagram are some of the popular companies that use Jest, whereas QUnit is used by Square, Convertale, and ALV CH. Jest has a broader approval, being mentioned in 271 company stacks & 161 developers stacks; compared to QUnit, which is listed in 11 company stacks and 6 developer stacks.

Decisions about Jest and QUnit
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Jest
Cypress

As we all know testing is an important part of any application. To assist with our testing we are going to use both Cypress and Jest. We feel these tools complement each other and will help us get good coverage of our code. We will use Cypress for our end to end testing as we've found it quite user friendly. Jest will be used for our unit tests because we've seen how many larger companies use it with great success.

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Postman will be used to do integration testing with the backend API we create. It offers a clean interface to create many requests, and you can even organize these requests into collections. It helps to test the backend API first to make sure it's working before using it in the front-end. Jest can also be used for testing and is already embedded into React. Not only does it offer unit testing support in javascript, it can also do snapshot testing for the front-end to make sure components are rendering correctly. Enzyme is complementary to Jest and offers more functions such as shallow rendering. UnitTest will be used for Python testing as it is simple, has a lot of functionality and already built in with python. Sentry will be used for keeping track of errors as it is also easily integratable with Heroku because they offer it as an add-on. LogDNA will be used for tracking logs which are not errors and is also a Heroku add-on. Its good to have a separate service to record logs, monitor, track and even fix errors in real-time so our application can run more smoothly.

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Pros of Jest
Pros of QUnit
  • 35
    Open source
  • 31
    Mock by default makes testing much simpler
  • 22
    Testing React Native Apps
  • 19
    Parallel test running
  • 15
    Fast
  • 13
    Bundled with JSDOM to enable DOM testing
  • 7
    Out of the box code coverage
  • 7
    Mock by default screws up your classes, breaking tests
  • 6
    One stop shop for unit testing
  • 6
    Promise support
  • 3
    Great documentation
  • 1
    Built in watch option with interactive filtering menu
  • 1
    Preset support
  • 1
    Assert Library Included
  • 0
    Can be used for BDD
  • 6
    Simple
  • 4
    Open Source
  • 3
    Promise support
  • 3
    Easy setup

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Cons of Jest
Cons of QUnit
  • 3
    Documentation
  • 3
    Ambiguous configuration
  • 2
    Multiple error messages for same error
  • 2
    Difficult to run single test/describe/file
  • 2
    Ambiguous
  • 2
    Many bugs still not fixed months/years after reporting
  • 2
    Difficult
  • 1
    Bugged
  • 1
    Reporter is too general
  • 1
    BeforeAll timing out makes all passing tests fail
  • 1
    Unstable
  • 1
    Bad docs
  • 1
    Still does't support .mjs files natively
  • 1
    Can't fail beforeAll to abort tests
  • 0
    Interaction with watch mode on terminal
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    What is Jest?

    Jest provides you with multiple layers on top of Jasmine.

    What is QUnit?

    QUnit is a powerful, easy-to-use JavaScript unit testing framework. It's used by the jQuery, jQuery UI and jQuery Mobile projects and is capable of testing any generic JavaScript code, including itself!

    Need advice about which tool to choose?Ask the StackShare community!

    What companies use Jest?
    What companies use QUnit?
    See which teams inside your own company are using Jest or QUnit.
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    What tools integrate with Jest?
    What tools integrate with QUnit?

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    What are some alternatives to Jest and QUnit?
    Mocha
    Mocha is a feature-rich JavaScript test framework running on node.js and the browser, making asynchronous testing simple and fun. Mocha tests run serially, allowing for flexible and accurate reporting, while mapping uncaught exceptions to the correct test cases.
    Selenium
    Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.
    AVA
    Even though JavaScript is single-threaded, IO in Node.js can happen in parallel due to its async nature. AVA takes advantage of this and runs your tests concurrently, which is especially beneficial for IO heavy tests. In addition, test files are run in parallel as separate processes, giving you even better performance and an isolated environment for each test file.
    Enzyme
    Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.
    Jasmine
    Jasmine is a Behavior Driven Development testing framework for JavaScript. It does not rely on browsers, DOM, or any JavaScript framework. Thus it's suited for websites, Node.js projects, or anywhere that JavaScript can run.
    See all alternatives