MDN Web Docs vs unittest

MDN Web Docs has no write-up on Specifiction yet; its figures are above.

unittest is Python’s free unit-testing framework for automating test setup, execution and outcome reporting. Fixtures provide shared setup and cleanup, while TestCase, TestSuite and test runners organize and run tests. TestCase includes assertions such as assertEqual, assertTrue, assertFalse and assertRaises. Tests can run from the command line by module, class, method or file path; running without arguments starts discovery. Discovery can be configured with a start directory, filename pattern and project top-level directory, but test files must be importable modules or packages from that top level. Tests and classes may be skipped conditionally or unconditionally, and expected failures can be marked. The subTest context manager separates iterations and reports parameters when one fails. unittest.mock supports replacing system parts with mock objects and checking their use. Documentation recommends CI systems including Buildbot, Jenkins, GitHub Actions and AppVeyor. It runs on Linux, macOS and Windows, and is free to use and distribute commercially under Python’s OSI-approved open source license.