For my devops career, I educate myself in a large variety of computer languages to do CI/CD and TDD in any required language. Since the cross-section is taken across languages, the tests for a particular language may be simple. Test snapshots show what language syntax is tested. Some tests are taken from https://www.w3schools.com; others from LinkedIn and similar sources.
artemponomarevjetski/all-computer-languages-polymath
Snapshots of courses and tests taken on-line for whatever language I needed at the moment