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Enzyme

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Jasmine

2.6K
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Mocha

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Enzyme vs Jasmine vs Mocha: What are the differences?

  1. Testing Framework: Enzyme is specifically designed to test React components and their internal state and behavior, while Jasmine and Mocha are general-purpose testing frameworks used for testing various types of JavaScript applications and code.

  2. API Design: Enzyme provides a more intuitive and easy-to-use API tailored for React components, offering methods like shallow, mount, and find for testing. In contrast, Jasmine and Mocha have different APIs that require additional setup and configuration for testing React components.

  3. Snapshot Testing: Enzyme seamlessly integrates with tools like Jest to support snapshot testing for React components, helping in capturing the expected output and easily detecting any changes. Jasmine and Mocha have limited support for snapshot testing and may require additional plugins or configurations.

  4. Virtual DOM Handling: Enzyme utilizes a virtual DOM to render React components in memory during tests, providing a lightweight and efficient way to simulate component behavior. Jasmine and Mocha lack built-in support for virtual DOM handling, which can make testing React components more complex and time-consuming.

  5. Component Testing Focus: Enzyme emphasizes testing the internal state, props, and rendering of React components to ensure their proper functionality and behavior, making it a preferred choice for React developers. Jasmine and Mocha, being more generic, may require additional setup and customizations to effectively test React components.

  6. Community Support: Enzyme has a strong community backing and extensive documentation focused on React component testing, making it easier for developers to find resources, examples, and solutions to common testing scenarios. Jasmine and Mocha, while popular in the JavaScript testing community, may not have the same level of specific support for React component testing.

In Summary, Enzyme is a specialized testing framework tailored for React components, offering a more intuitive API, snapshot testing integration, virtual DOM handling, component-focused testing, and strong community support compared to general-purpose frameworks like Jasmine and Mocha.

Decisions about Enzyme, Jasmine, and Mocha

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 Jasmine
Pros of Mocha
    Be the first to leave a pro
    • 64
      Can also be used for tdd
    • 49
      Open source
    • 18
      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
      Jasmine is faster than selenium in angular application
    • 1
      SpyOn to fake calls
    • 1
      Async and promises are easy calls with "done"
    • 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

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    Cons of Enzyme
    Cons of Jasmine
    Cons of Mocha
      Be the first to leave a con
      • 2
        Unfriendly error logs
      • 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 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 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 are some alternatives to Enzyme, Jasmine, and Mocha?
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      Jest
      Jest provides you with multiple layers on top of Jasmine.
      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.
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