> Prioritise running as many type-checkers as possible on your test suite. Run at least one on your source code.
There are two types of tests: those that test against the public API, and those that test internal codes with various mocks and fakes. I think the vast majority of unit tests is the latter one, in which case the suggestion does not really make sense.
There are two types of tests: those that test against the public API, and those that test internal codes with various mocks and fakes. I think the vast majority of unit tests is the latter one, in which case the suggestion does not really make sense.