I hope TypeScript community will come up with something as powerful as py.test soon. Fixtures keep your wrists agony free when writing tests. Asserts are joy to read. Decorators make everything readable. Plugin system has a solution for everything.<p>Meanwhile in the JS land I.cannot().keep.guessing().what().crap().to.chain.or.not().
Has anyone used something like this to report performance regressions? I don't as much want to assert that performance stays below X seconds on particular tests, and more want a report on pull requests if any tests regressed more than X%, the same way I currently get CI reports for coverage regressions.