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Enzyme

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Jest

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175
Mocha

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430
Decisions about Enzyme, Jest, and Mocha
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CypressCypressJestJest

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 Enzyme
Pros of Jest
Pros of Mocha
    Be the first to leave a pro
    • 36
      Open source
    • 32
      Mock by default makes testing much simpler
    • 23
      Testing React Native Apps
    • 20
      Parallel test running
    • 16
      Fast
    • 13
      Bundled with JSDOM to enable DOM testing
    • 8
      Mock by default screws up your classes, breaking tests
    • 7
      Out of the box code coverage
    • 7
      Promise support
    • 6
      One stop shop for unit testing
    • 3
      Great documentation
    • 2
      Assert Library Included
    • 1
      Built in watch option with interactive filtering menu
    • 1
      Preset support
    • 0
      Can be used for BDD
    • 0
      Karma
    • 137
      Open source
    • 102
      Simple
    • 81
      Promise support
    • 48
      Flexible
    • 29
      Easy to add support for Generators
    • 12
      For browser and server testing
    • 7
      Curstom assertion libraries
    • 5
      Works with Karma
    • 3
      No other better tools
    • 1
      Simple setup
    • 1
      Works with saucelabs
    • 1
      Lots of tutorials and help online
    • 1
      Default reporter is nice, clean, and itemized
    • 1
      Works with BrowserStack
    • 1
      Simple integration testing

    Sign up to add or upvote prosMake informed product decisions

    Cons of Enzyme
    Cons of Jest
    Cons of Mocha
      Be the first to leave a con
      • 4
        Documentation
      • 4
        Ambiguous configuration
      • 3
        Difficult
      • 2
        Many bugs still not fixed months/years after reporting
      • 2
        Multiple error messages for same error
      • 2
        Difficult to run single test/describe/file
      • 2
        Ambiguous
      • 2
        Bugged
      • 1
        BeforeAll timing out makes all passing tests fail
      • 1
        Slow
      • 1
        Reporter is too general
      • 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
      • 3
        Cannot test a promisified functions without assertion
      • 2
        No assertion count in results
      • 1
        Not as many reporter options as Jest

      Sign up to add or upvote consMake informed product decisions

      What is Enzyme?

      Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.

      What is Jest?

      Jest provides you with multiple layers on top of Jasmine.

      What is 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.

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      What companies use Enzyme?
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      What companies use Mocha?

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      What tools integrate with Enzyme?
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      What tools integrate with Mocha?

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      Blog Posts

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      What are some alternatives to Enzyme, Jest, and Mocha?
      react-testing-library
      It is a simple and complete React DOM testing utility that encourage good testing practices. It provides light utility functions on top of react-dom and react-dom/test-utils, in a way that encourages better testing practices.
      JavaScript
      JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
      Git
      Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
      GitHub
      GitHub is the best place to share code with friends, co-workers, classmates, and complete strangers. Over three million people use GitHub to build amazing things together.
      Python
      Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
      See all alternatives