def test_clear_works(self, tmpdir):
fc = FileCache(Path(tmpdir))
fc["foo"] = 42
assert Path(fc.path).exists()
fc.clear()
assert len(fc) == 0
assert not Path(tmpdir).exists()
def test_add_empty_value(self, tmpdir, val: Optional[pd.DataFrame]):
fc = FileCache(Path(tmpdir))
fc["foo"] = val
assert "foo" not in fc
assert len(fc) == 0
def test_str_repr(self, tmpdir):
fc = FileCache(Path(tmpdir))
assert (
str(fc) ==
f"<{fc.__class__.__name__}[size={len(fc)}, path={str(tmpdir)!r}]>")
assert (
repr(fc) ==
f"<{fc.__class__.__name__}[size={len(fc)}, path={str(tmpdir)!r}]>")
def _cache_converter(value: Optional[Union[str, Path, Cache]]) -> Cache:
"""Convert ``value`` to :class:`omnipath._core.cache.Cache`."""
if isinstance(value, Cache):
return value
if value is None:
return MemoryCache()
return FileCache(value)
def test_cache_works(self, tmpdir):
fc = FileCache(Path(tmpdir))
sentinel = object()
assert "foo" not in fc
fc["foo"] = 42
fc["bar.pickle"] = sentinel
assert "foo" in fc
assert "foo.pickle" in fc
assert fc["bar.pickle"] is not sentinel
def test_path(self, tmpdir):
fc = FileCache(Path(tmpdir))
assert isinstance(fc.path, Path)
assert str(fc.path) == str(tmpdir)
def test_invalid_path(self):
with pytest.raises(TypeError):
FileCache(42)