Fix signature for generic structure hooks#107
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Tinche merged 1 commit intopython-attrs:masterfrom Nov 2, 2020
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A generic structure hook is expected to return a value of the type that it accepts as an argument.
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Thanks. Are there established ways of testing type annotations? |
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I've only worked on a couple of typed projects but I think that type-checking the unit tests or some other corpus of examples should give coverage. |
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How do you test for failures though? |
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A generic structure hook is expected to return a value of the type that it accepts as an argument.
I feel guilty submitting a two-byte PR but I noticed that there aren't any tests that invoke mypy. Would it be useful to do some type checking as part of the test suite?
Closes #106.