def test_safe_get_no_perms(self, tmpdir, monkeypatch):
cache_dir = tmpdir.join("unreadable-cache")
cache_dir.makedirs()
os.chmod(cache_dir, 000)
monkeypatch.setattr(os.path, "exists", lambda x: True)
cache = SafeFileCache(cache_dir)
cache.get("foo")
def test_cache_roundtrip(self, tmpdir):
cache_dir = tmpdir.join("test-cache")
cache_dir.makedirs()
cache = SafeFileCache(cache_dir)
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
