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[red-knot] fix red-knot fuzzing (#16675)

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The red-knot CLI changed since the fuzzer script was added; update it to
work with current red-knot CLI.

Also add some notes on how to ensure local changes to the fuzzer script
are picked up.
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Carl Meyer 2025-03-12 06:25:29 -07:00 • committed by GitHub
parent 083df0cf84
commit 057e497d30
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1 changed files with 6 additions and 1 deletions
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7
python/py-fuzzer/fuzz.py
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@ -17,6 +17,11 @@ Example invocations of the script using `uv`:
using a random selection of seeds, and only print a summary at the end using a random selection of seeds, and only print a summary at the end
(the `shuf` command is Unix-specific): (the `shuf` command is Unix-specific):
`uvx --from ./python/py-fuzzer fuzz --bin ruff $(shuf -i 0-1000000 -n 10000) --quiet `uvx --from ./python/py-fuzzer fuzz --bin ruff $(shuf -i 0-1000000 -n 10000) --quiet
If you make local modifications to this script, you'll need to run the above
with `--reinstall` to get your changes reflected in the uv-cached installed
package. Alternatively, if iterating quickly on changes, you can add
`--with-editable ./python/py-fuzzer`.
""" """
from __future__ import annotations from __future__ import annotations
@ -48,7 +53,7 @@ def redknot_contains_bug(code: str, *, red_knot_executable: Path) -> bool:
Path(tempdir, "pyproject.toml").write_text('[project]\n\tname = "fuzz-input"') Path(tempdir, "pyproject.toml").write_text('[project]\n\tname = "fuzz-input"')
Path(tempdir, "input.py").write_text(code) Path(tempdir, "input.py").write_text(code)
completed_process = subprocess.run( completed_process = subprocess.run(
[red_knot_executable, "--current-directory", tempdir], [red_knot_executable, "check", "--project", tempdir],
capture_output=True, capture_output=True,
text=True, text=True,
) )