Happo.io vs JUnit: What are the differences?
What is Happo.io? 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.
What is JUnit? A programmer-oriented testing framework for Java. JUnit is a simple framework to write repeatable tests. It is an instance of the xUnit architecture for unit testing frameworks.
Happo.io and JUnit belong to "Testing Frameworks" category of the tech stack.
JUnit is an open source tool with 7.52K GitHub stars and 2.8K GitHub forks. Here's a link to JUnit's open source repository on GitHub.