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Jasmine

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2.2K
+ 1
158
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Jasmine vs Jest: What are the differences?

What is Jasmine? DOM-less simple JavaScript testing framework. 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.

What is Jest? Painless JavaScript Unit Testing. Jest provides you with multiple layers on top of Jasmine.

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

"Can also be used for tdd " is the primary reason why developers consider Jasmine over the competitors, whereas "Open source" was stated as the key factor in picking Jest.

Jasmine and Jest are both open source tools. It seems that Jest with 26.1K GitHub stars and 3.53K forks on GitHub has more adoption than Jasmine with 14.4K GitHub stars and 2.12K GitHub forks.

Repro, Glympse, and Ubiqua are some of the popular companies that use Jest, whereas Jasmine is used by Coderus, Infoshare, and Ztory. Jest has a broader approval, being mentioned in 262 company stacks & 150 developers stacks; compared to Jasmine, which is listed in 143 company stacks and 75 developer stacks.

Advice on Jasmine and Jest
Ezra Fayet
Needs advice
on
ReactReactMochaMocha
and
JestJest

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 Jasmine and Jest
Shared insights
on
JestJestCypressCypress

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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We use Mocha for our FDA verification testing. It's integrated into Meteor, our upstream web application framework. We like how battle tested it is, its' syntax, its' options of reporters, and countless other features. Most everybody can agree on mocha, and that gets us half-way through our FDA verification and validation (V&V) testing strategy.

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Pros of Jasmine
Pros of Jest
  • 61
    Can also be used for tdd
  • 48
    Open source
  • 17
    Originally from RSpec
  • 15
    Great community
  • 14
    No dependencies, not even DOM
  • 10
    Easy to setup
  • 8
    Simple
  • 3
    Created by Pivotal-Labs
  • 2
    Works with KarmaJs
  • 1
    Async and promises are easy calls with "done"
  • 1
    Jasmine is faster than selenium in angular application
  • 1
    SpyOn to fake calls
  • 33
    Open source
  • 29
    Mock by default makes testing much simpler
  • 21
    Testing React Native Apps
  • 18
    Parallel test running
  • 14
    Fast
  • 12
    Bundled with JSDOM to enable DOM testing
  • 7
    Mock by default screws up your classes, breaking tests
  • 7
    Out of the box code coverage
  • 6
    Promise support
  • 6
    One stop shop for unit testing
  • 3
    Great documentation
  • 1
    Assert Library Included
  • 1
    Built in watch option with interactive filtering menu
  • 0
    Can be used for BDD

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

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What is 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.

What is Jest?

Jest provides you with multiple layers on top of Jasmine.

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What companies use Jasmine?
What companies use Jest?

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What tools integrate with Jasmine?
What tools integrate with Jest?

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What are some alternatives to Jasmine and Jest?
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.
Karma
Karma is not a testing framework, nor an assertion library. Karma just launches a HTTP server, and generates the test runner HTML file you probably already know from your favourite testing framework. So for testing purposes you can use pretty much anything you like.
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.
Enzyme
Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.
See all alternatives
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