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https://github.com/safishamsi/graphify.git
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ayushcodes10
145032c560
Covers the exact shape from the issue: two projects, each with their
own absolute cache directory, touched in one process. Confirmed to
fail against pre fix code: shared, poisoned index, no warning on
switch, and a dropped reload when revisiting the first root.
(cherry picked from commit 2429ce1b0e)
111 lines
4.4 KiB
Python
111 lines
4.4 KiB
Python
"""#3989 — a process that touches more than one cache root must not have the
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first root's stat-index.json poisoned with entries from every root that
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followed it.
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``_ensure_stat_index`` used to bind to the FIRST root/cache_root it ever saw
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and return immediately for every later call, for the life of the process.
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Reads for a later root silently came from the first root's (irrelevant) file,
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and at exit the accumulated in-memory index — now holding entries for every
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root ever touched — was written back into the FIRST root's file alone.
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"""
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from __future__ import annotations
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import json
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import warnings
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from pathlib import Path
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import pytest
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from graphify import cache
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@pytest.fixture(autouse=True)
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def _fresh_index():
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def reset():
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cache._stat_index_root = None
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cache._stat_index_anchor = None
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cache._stat_index = {}
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cache._stat_index_dirty = False
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cache._stat_index_path = None
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reset()
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yield
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reset()
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def _make_project(tmp_path: Path, name: str) -> tuple[Path, Path]:
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"""Return (source root, absolute cache dir) for a fake project ``name`` —
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the exact shape of the issue's own reproduction (an absolute
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``_GRAPHIFY_OUT`` set fresh before each root's calls)."""
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src = tmp_path / name / "src"
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src.mkdir(parents=True)
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(src / "doc.md").write_text(f"content of {name}", encoding="utf-8")
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out = tmp_path / name / "out"
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out.mkdir(parents=True)
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return src, out
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def _stat_index_file(cache_dir: Path) -> Path:
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return cache_dir / "cache" / "stat-index.json"
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def test_each_root_gets_its_own_stat_index_file_not_the_first_roots(monkeypatch, tmp_path):
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"""Two different projects, each with their own absolute cache dir, must
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each end up with their OWN stat-index.json — not a shared/poisoned one."""
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src_a, out_a = _make_project(tmp_path, "a")
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src_b, out_b = _make_project(tmp_path, "b")
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with warnings.catch_warnings():
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warnings.simplefilter("ignore")
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_a))
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cache.file_hash(src_a / "doc.md", root=src_a)
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_b))
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cache.file_hash(src_b / "doc.md", root=src_b)
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cache._flush_stat_index()
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assert _stat_index_file(out_a).exists()
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assert _stat_index_file(out_b).exists()
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index_a = json.loads(_stat_index_file(out_a).read_text(encoding="utf-8"))
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index_b = json.loads(_stat_index_file(out_b).read_text(encoding="utf-8"))
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# Project A's file must hold only A's own (relativized) key, never a key
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# belonging to project B, and vice versa.
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assert any("doc.md" in k for k in index_a)
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assert any("doc.md" in k for k in index_b)
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assert not any(str(src_b) in k for k in index_a)
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assert not any(str(src_a) in k for k in index_b)
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def test_switching_cache_root_mid_process_warns(monkeypatch, tmp_path):
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"""Crossing from one bound root to another in the same process must be
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visible, not silent (#3989 minimum-fix requirement)."""
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src_a, out_a = _make_project(tmp_path, "a")
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src_b, out_b = _make_project(tmp_path, "b")
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_a))
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cache.file_hash(src_a / "doc.md", root=src_a)
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_b))
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with pytest.warns(RuntimeWarning, match="stat index switched"):
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cache.file_hash(src_b / "doc.md", root=src_b)
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def test_revisiting_the_first_root_reloads_its_own_entries(monkeypatch, tmp_path):
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"""After switching away and back, the first root's file must still carry
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its own entry — the switch-back must reload it, not keep serving/writing
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whatever root happened to be bound last."""
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src_a, out_a = _make_project(tmp_path, "a")
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src_b, out_b = _make_project(tmp_path, "b")
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with warnings.catch_warnings():
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warnings.simplefilter("ignore")
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_a))
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digest_a_first = cache.file_hash(src_a / "doc.md", root=src_a)
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_b))
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cache.file_hash(src_b / "doc.md", root=src_b)
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monkeypatch.setattr(cache, "_GRAPHIFY_OUT", str(out_a))
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digest_a_second = cache.file_hash(src_a / "doc.md", root=src_a)
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cache._flush_stat_index()
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assert digest_a_first == digest_a_second
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index_a = json.loads(_stat_index_file(out_a).read_text(encoding="utf-8"))
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assert any("doc.md" in k for k in index_a)
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assert not any(str(src_b) in k for k in index_a)
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