AVA

99
161
+ 1
32
Jest

3K
2K
+ 1
154
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AVA vs Jest: What are the differences?

AVA: A refined, futuristic test runner. 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; Jest: Painless JavaScript Unit Testing. Jest provides you with multiple layers on top of Jasmine.

AVA and Jest can be primarily classified as "Javascript Testing Framework" tools.

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

AVA and Jest are both open source tools. Jest with 26.1K GitHub stars and 3.53K forks on GitHub appears to be more popular than AVA with 16.4K GitHub stars and 1.07K GitHub forks.

According to the StackShare community, Jest has a broader approval, being mentioned in 262 company stacks & 150 developers stacks; compared to AVA, which is listed in 12 company stacks and 10 developer stacks.

Advice on AVA and Jest
Ezra Fayet
Needs advice
on
React
Mocha
and
Jest

I released two React hooks on npm:

  • use-wizard, to handle multi-paths, multi-steps wizards

  • use-formidable, to handle big nested forms (cause we all know how painful they are.)

GitHub Link: https://github.com/use-wizard

  • Any advice on what I should do first to improve/bundle the packages? (At the moment, I have no linter, no minifier, no compression, no webpack; I went straight to the features and unit tests)

  • I am bundling it with commonjs, should I also bundle it for ECMA modules?

If anyone wants to join, you're more than welcome; this is beginner-friendly as there are many things to do anyway.

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Decisions about AVA and Jest
Shared insights
on
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 AVA
Pros of Jest

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Cons of AVA
Cons of Jest
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    What is 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.

    What is Jest?

    Jest provides you with multiple layers on top of Jasmine.
    What companies use AVA?
    What companies use Jest?

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    What tools integrate with AVA?
    What tools integrate with Jest?
      No integrations found

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      Blog Posts

      What are some alternatives to AVA and Jest?
      EVA
      Equipping you with hundreds of symbols and dozens or styles configurations, it makes sure the design stays consistent across all of your applications and platforms.
      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.
      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.
      Cypress
      Cypress is a front end automated testing application created for the modern web. Cypress is built on a new architecture and runs in the same run-loop as the application being tested. As a result Cypress provides better, faster, and more reliable testing for anything that runs in a browser. Cypress works on any front-end framework or website.
      Chai
      It is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework. It has several interfaces that allow the developer to choose the most comfortable. The chain-capable BDD styles provide an expressive language & readable style, while the TDD assert style provides a more classical feel.
      See all alternatives
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