Off the Bit
Tools: Jest
Category: Testing and code quality
Site: jestjs.io
Jest
The JavaScript test runner that bundled assertions, mocking, snapshots and coverage into one install.
Made testing JavaScript a single dependency.
What it is sold for
Running unit tests in a JavaScript project.
Same shelf
The rest of testing and code quality, alphabetically. Sharing a category is a filing decision, not a relationship.
- Scans public repositories and reports how much of the code looks machine-generated.
- Amazon's automated review service. The address now serves CodeGuru Profiler, which is about runtime cost rather than review.
- Visual regression testing. Compares rendered screenshots rather than the DOM, so a layout that moves is caught even when the markup did not change.
- Test automation aimed at quality teams rather than at engineers, with tests authored and maintained without code.
- Mock API endpoints created in seconds, generated from a prompt or from captured traffic, across REST, GraphQL and gRPC.
- Records real Java runtime behaviour and turns it into regression tests and review verdicts.
- Continuous profiling for PHP and other runtimes, aimed at finding the slow function rather than the slow request.
- Generates, runs and maintains end-to-end tests automatically, and claims to resolve most of its own failures.
ImranTools[Jest]