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kevinveenbirkenbachandClaude Opus 5
9b436a3162
_all_project_files carried @lru_cache(maxsize=1) and read PROJECT_ROOT from the
module global inside its body, so the root was not part of the cache key. The
first call decided the answer for the rest of the process: point PROJECT_ROOT at
a fixture afterwards and the walk still reports the real repository, or, in the
other order, a sweep after the fixture is torn down enumerates a directory that
no longer exists.
Both failure modes are silent. iter_project_files, iter_project_files_with_content
and iter_non_ignored_files all sit on this one walk, 202 files in the tree use
them, and a lint whose corpus collapses to zero paths reports zero offenders and
passes. Nothing raises.
The root is now a parameter and therefore the key, with room for four of them.
_reset() still clears it through cache_clear(), and the only other caller is
iter_project_files, which passes str(PROJECT_ROOT) explicitly.
Live impact today is none, and that is worth stating: exactly one test patches
PROJECT_ROOT in this module, and it calls _reset() in both setUp and
addCleanup, so the defect was fully masked. Every other patch site in the repo
targets PROJECT_ROOT in a different module. This is about the next test that
forgets, not about a failure anyone has seen.
A regression test covers it rather than a comment. Negative control: with the
key removed the new test fails on the second root with
Items in the first set but not the second: '/tmp/.../first.txt'
and passes once the key is back; the file is byte-identical to its pre-probe
state afterwards.
The lint docstring that quoted the old cache shape is deleted rather than
updated, because a cross-module implementation reference goes stale the moment
that module changes, which is exactly what happened here.
Same class as c4556fe72d, which keyed the applications SPOT by the groups its
payload reads. That one was a live defect in utils/cache/base.py; this is the
latent twin one module over.
Residual: maxsize=4 is a choice, not a measurement. More than four roots alive
at once evicts the oldest, which re-walks rather than answers wrongly.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>