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omsenjalia
73876cbdc7
Under a deep root, the cache entry
<root>/graphify-out/cache/ast/v<ver>-s<schema>-g<grammars>/<64 hex>.json,
and mkstemp's even longer <hash>.<random>.tmp temp name, overrun Windows
MAX_PATH. save_cached raised FileNotFoundError and `graphify extract`
failed with "AST extraction failed" (e.g. any project under the default
%TEMP% of a long user name).
Move detect._os_path (the \?\ helper from #1655) to paths.os_long_path
so cache.py can share it, and use it for the entry and temp file in
save_cached and load_cached. detect._os_path stays as an alias. Keys are
unaffected: _normalize_path still strips the prefix.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
(cherry picked from commit abf9c9f6ab)
37 lines
1.6 KiB
Python
37 lines
1.6 KiB
Python
"""A cache entry whose path exceeds Windows MAX_PATH must still save and load.
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Under a deep root (a nested temp dir, OneDrive, a long user name) the AST cache
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path — <root>/graphify-out/cache/ast/v<ver>-s<schema>-g<grammars>/<64 hex>.json,
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plus mkstemp's longer ``<hash>.<random>.tmp`` temp name — overruns 260 chars.
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The write raised FileNotFoundError and ``graphify extract`` failed outright.
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"""
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from __future__ import annotations
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import os
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import pytest
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from graphify.cache import cache_dir, load_cached, save_cached
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from graphify.paths import _WINDOWS_MAX_PATH
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@pytest.mark.skipif(os.name != "nt", reason="Windows MAX_PATH semantics")
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def test_cache_entry_round_trips_past_windows_max_path(tmp_path):
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src = tmp_path / "a.py"
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src.write_text("def f():\n return 1\n", encoding="utf-8")
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# Pad the cache root so the cache DIRECTORY stays creatable (< 248) while
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# the entry file inside it (+ "\<64 hex>.json") lands past MAX_PATH.
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overhead = len(str(cache_dir(tmp_path / "p", "ast"))) - len(str(tmp_path / "p"))
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deep = tmp_path / ("d" * (230 - overhead - len(str(tmp_path)) - 1))
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entry_len = len(str(cache_dir(deep, "ast"))) + 1 + 64 + len(".json")
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assert entry_len > _WINDOWS_MAX_PATH - 1, entry_len
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result = {"nodes": [{"id": "f", "label": "f", "source_file": str(src)}], "edges": []}
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save_cached(src, result, root=tmp_path, cache_root=deep)
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cached = load_cached(src, root=tmp_path, cache_root=deep)
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assert cached is not None
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assert [n["label"] for n in cached["nodes"]] == ["f"]
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assert not list(cache_dir(deep, "ast").glob("*.tmp"))
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