Happo.io vs TestNG: 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, TestNG is detailed as "A testing framework inspired from JUnit and NUnit". It is a testing framework designed to simplify a broad range of testing needs, it covers all categories of tests: unit, functional, end-to-end, integration, etc.Run your tests in arbitrarily big thread pools with various policies available (all methods in their own thread, one thread per test class, etc.
Happo.io and TestNG belong to "Testing Frameworks" category of the tech stack.
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, TestNG provides the following key features:
- Support for data-driven testing
- Support for parameters
- Powerful execution model (no more TestSuite)