Add type hints for a number of test helper functions #67
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This adds type hints for all
pytest
fixtures insybil/
andtests/
, as well as some other test helper functions.Some people prefer to use
Iterator
overGenerator
for typingpytest
fixtures, but this can cause issues, e.g. https://youtrack.jetbrains.com/issue/PY-40318/pytest-fixtures-with-yield-return-types-defined-as-Iterator and Generator is an "accepted answer" onpytest-dev
: pytest-dev/pytest#7809 (comment). I don't fully understand that, but I went with the accepted answer.