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import os
from pathlib import Path
from typing import Iterator
from unittest.mock import Mock
import pytest
from pip._vendor.cachecontrol.caches import FileCache
from pip._internal.network.cache import SafeFileCache
@pytest.fixture(scope="function")
def cache_tmpdir(tmpdir: Path) -> Iterator[Path]:
cache_dir = tmpdir.joinpath("cache")
cache_dir.mkdir(parents=True)
yield cache_dir
class TestSafeFileCache:
"""
The no_perms test are useless on Windows since SafeFileCache uses
pip._internal.utils.filesystem.check_path_owner which is based on
os.geteuid which is absent on Windows.
"""
def test_cache_roundtrip(self, cache_tmpdir: Path) -> None:
cache = SafeFileCache(os.fspath(cache_tmpdir))
assert cache.get("test key") is None
cache.set("test key", b"a test string")
assert cache.get("test key") == b"a test string"
cache.delete("test key")
assert cache.get("test key") is None
@pytest.mark.skipif("sys.platform == 'win32'")
def test_safe_get_no_perms(
self, cache_tmpdir: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
os.chmod(cache_tmpdir, 000)
monkeypatch.setattr(os.path, "exists", lambda x: True)
cache = SafeFileCache(os.fspath(cache_tmpdir))
cache.get("foo")
@pytest.mark.skipif("sys.platform == 'win32'")
def test_safe_set_no_perms(self, cache_tmpdir: Path) -> None:
os.chmod(cache_tmpdir, 000)
cache = SafeFileCache(os.fspath(cache_tmpdir))
cache.set("foo", b"bar")
@pytest.mark.skipif("sys.platform == 'win32'")
def test_safe_delete_no_perms(self, cache_tmpdir: Path) -> None:
os.chmod(cache_tmpdir, 000)
cache = SafeFileCache(os.fspath(cache_tmpdir))
cache.delete("foo")
def test_cache_hashes_are_same(self, cache_tmpdir: Path) -> None:
cache = SafeFileCache(os.fspath(cache_tmpdir))
key = "test key"
fake_cache = Mock(FileCache, directory=cache.directory, encode=FileCache.encode)
assert cache._get_cache_path(key) == FileCache._fn(fake_cache, key)
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