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Jest vs Courgette: What are the differences?
Developers describe Jest as "Painless JavaScript Unit Testing". Jest provides you with multiple layers on top of Jasmine. On the other hand, Courgette is detailed as "A simple UI testing for all the team. Test your Web and Native Mobile Apps". It is a Selenium-based UI Testing Framework written in JS that’s built on top of Cucumber with Protractor for desktop / hybrid apps and Cucumber with WDIO and appium for native mobile apps.
Jest and Courgette can be categorized as "Javascript Testing Framework" tools.
Some of the features offered by Jest are:
- 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
On the other hand, Courgette provides the following key features:
- Snippets or live templates for intellisense in your favourite IDE to write those steps accurately and quickly
- Courgette API for creating your own step definitions
- Screenshots on error for debugging
Jest is an open source tool with 30.7K GitHub stars and 4.33K GitHub forks. Here's a link to Jest's open source repository on GitHub.
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.
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.
Pros of Courgette
Pros of Jest
- Open source36
- Mock by default makes testing much simpler32
- Testing React Native Apps23
- Parallel test running20
- Fast16
- Bundled with JSDOM to enable DOM testing13
- Mock by default screws up your classes, breaking tests8
- Out of the box code coverage7
- Promise support7
- One stop shop for unit testing6
- Great documentation3
- Assert Library Included2
- Built in watch option with interactive filtering menu1
- Preset support1
- Can be used for BDD0
- Karma0
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Cons of Courgette
Cons of Jest
- Documentation4
- Ambiguous configuration4
- Difficult3
- Many bugs still not fixed months/years after reporting2
- Multiple error messages for same error2
- Difficult to run single test/describe/file2
- Ambiguous2
- Bugged2
- BeforeAll timing out makes all passing tests fail1
- Slow1
- Reporter is too general1
- Unstable1
- Bad docs1
- Still does't support .mjs files natively1
- Can't fail beforeAll to abort tests1
- Interaction with watch mode on terminal0
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What is Courgette?
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