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  1. Stackups
  2. DevOps
  3. Testing Frameworks
  4. Javascript Testing Framework
  5. Codecov vs Jest

Codecov vs Jest

OverviewDecisionsComparisonAlternatives

Overview

Jest
Jest
Stacks15.2K
Followers4.1K
Votes175
Codecov
Codecov
Stacks2.8K
Followers324
Votes102

Codecov vs Jest: What are the differences?

What is Codecov? Hosted coverage reports with awesome features to enhance your CI workflow. Our patrons rave about our elegant coverage reports, integrated pull request comments, interactive commit graphs, our Chrome plugin and security.

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

Codecov can be classified as a tool in the "Code Coverage" category, while Jest is grouped under "Javascript Testing Framework".

Some of the features offered by Codecov are:

  • Beautiful Reports
  • Pull Request Comments
  • Interactive Commit Graphs

On the other hand, Jest provides the following key features:

  • Familiar Approach: Built on top of the Jasmine test framework, using familiar expect(value).toBe(other) assertions
  • Mock by Default: Automatically mocks CommonJS modules returned by require(), making most existing code testable
  • Short Feedback Loop: DOM APIs are mocked and tests run in parallel via a small node.js command line utility

"More stable than coveralls" is the top reason why over 14 developers like Codecov, while over 24 developers mention "Open source" as the leading cause for choosing Jest.

Jest is an open source tool with 26.1K GitHub stars and 3.53K GitHub forks. Here's a link to Jest's open source repository on GitHub.

Repro, Glympse, and Ubiqua are some of the popular companies that use Jest, whereas Codecov is used by Repro, ContentSquare, and homezen. Jest has a broader approval, being mentioned in 263 company stacks & 150 developers stacks; compared to Codecov, which is listed in 49 company stacks and 28 developer stacks.

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Advice on Jest, Codecov

Dane
Dane

Feb 7, 2020

Needs adviceonCypressCypressJestJest

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.

836k views836k
Comments
Felipe
Felipe

May 24, 2020

Needs advice

My website is brand new and one of the few requirements of testings I had to implement was code coverage. Never though it was so hard to implement using a #docker container.
Given my lack of experience, every attempt I tried on making a simple code coverage test using the 4 combinations of #TravisCI, #CircleCi with #Coveralls, #Codecov I failed. The main problem was I was generating the .coverage file within the docker container and couldn't access it with #TravisCi or #CircleCi, every attempt to solve this problem seems to be very hacky and this was not the kind of complexity I want to introduce to my newborn website.
This problem was solved using a specific action for #GitHubActions, it was a 3 line solution I had to put in my github workflow file and I was able to access the .coverage file from my docker container and get the coverage report with #Codecov.

198k views198k
Comments
Anonymous
Anonymous

Feb 6, 2020

Needs advice

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.

290k views290k
Comments

Detailed Comparison

Jest
Jest
Codecov
Codecov

Jest provides you with multiple layers on top of Jasmine.

Our patrons rave about our elegant coverage reports, integrated pull request comments, interactive commit graphs, our Chrome plugin and security.

Familiar Approach: Built on top of the Jasmine test framework, using familiar expect(value).toBe(other) assertions;Mock by Default: Automatically mocks CommonJS modules returned by require(), making most existing code testable;Short Feedback Loop: DOM APIs are mocked and tests run in parallel via a small node.js command line utility
Beautiful Reports;Pull Request Comments;Interactive Commit Graphs;Chrome Extension;Github Commit Status;Easy to Integrate;Hipchat Integration
Statistics
Stacks
15.2K
Stacks
2.8K
Followers
4.1K
Followers
324
Votes
175
Votes
102
Pros & Cons
Pros
  • 36
    Open source
  • 32
    Mock by default makes testing much simpler
  • 23
    Testing React Native Apps
  • 20
    Parallel test running
  • 16
    Fast
Cons
  • 4
    Ambiguous configuration
  • 4
    Documentation
  • 3
    Difficult
  • 2
    Multiple error messages for same error
  • 2
    Many bugs still not fixed months/years after reporting
Pros
  • 17
    Easy setup
  • 17
    More stable than coveralls
  • 14
    GitHub integration
  • 11
    They reply their users
  • 10
    Easy setup,great ui
Cons
  • 1
    GitHub org / team integration is a little too tight
  • 0
    Delayed results by hours since recent outage
  • 0
    Support does not respond to email
Integrations
No integrations available
HipChat
HipChat
Jenkins
Jenkins
Bitbucket
Bitbucket
GitLab
GitLab
GitHub
GitHub
CircleCI
CircleCI
Heroku
Heroku

What are some alternatives to Jest, Codecov?

Mocha

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

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

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.

Coveralls

Coveralls

Coveralls works with your CI server and sifts through your coverage data to find issues you didn't even know you had before they become a problem. Free for open source, pro accounts for private repos, instant sign up with GitHub OAuth.

CodeceptJS

CodeceptJS

It is a modern end to end testing framework with a special BDD-style syntax. The test is written as a linear scenario of user's action on a site. Each test is described inside a Scenario function with I object passed into it.

Protractor

Protractor

Protractor is an end-to-end test framework for Angular and AngularJS applications. Protractor runs tests against your application running in a real browser, interacting with it as a user would.

AVA

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.

Ghost Inspector

Ghost Inspector

It lets you create and manage UI tests that check specific functionality in your website or application. We execute these automated browser tests continuously from the cloud and alert you if anything breaks.

QUnit

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!

Sorry-cypress

Sorry-cypress

Open-source, self-hosted alternative Cypress Dashboard.

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