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tests: --update-data incompatible with xdist #15641

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Merged
JelleZijlstra merged 1 commit into from
Jul 12, 2023
Merged

tests: --update-data incompatible with xdist #15641

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7 changes: 7 additions & 0 deletions mypy/test/data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -614,6 +614,13 @@ def pytest_addoption(parser: Any) -> None:
)


def pytest_configure(config: pytest.Config) -> None:
if config.getoption("--update-data") and config.getoption("--numprocesses", default=1) > 1:
raise pytest.UsageError(
"--update-data incompatible with parallelized tests; re-run with -n 1"
)


# This function name is special to pytest. See
# https://doc.pytest.org/en/latest/how-to/writing_plugins.html#collection-hooks
def pytest_pycollect_makeitem(collector: Any, name: str, obj: object) -> Any | None:
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