Happo.io vs react-testing-library: What are the differences?

Developers describe Happo.io as "Cross-platform, cross-browser screenshot testing for modern user interfaces". Happo is a visual regression testing tool. It hooks into your CI environment to compare the visual appearance of UI components before and after a change. Screenshots are taken in different browsers and across different screen sizes to ensure consistent cross-browser and responsive styling of your application. On the other hand, react-testing-library is detailed as "A lightweight solution for testing React components". 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.

Happo.io and react-testing-library can be categorized as "Testing Frameworks" tools.

Some of the features offered by Happo.io are:

• No more manual parsing of CSS
• See the effects of changes directly
• Test individual components in isolation

On the other hand, react-testing-library provides the following key features:

• light-weight solution for testing
• React DOM testing utilities
• works with any environment that provides DOM APIs

react-testing-library is an open source tool with 8.25K GitHub stars and 464 GitHub forks. Here's a link to react-testing-library's open source repository on GitHub.