file_utils_test.py 文件源码

def test_cached_path(self):
        url = 'http://fake.datastore.com/glove.txt.gz'
        set_up_glove(url, self.glove_bytes)

        # non-existent file
        with pytest.raises(FileNotFoundError):
            filename = cached_path("tests/fixtures/does_not_exist/fake_file.tar.gz")

        # unparsable URI
        with pytest.raises(ValueError):
            filename = cached_path("fakescheme://path/to/fake/file.tar.gz")

        # existing file as path
        assert cached_path(self.glove_file) == self.glove_file

        # caches urls
        filename = cached_path(url, cache_dir=self.TEST_DIR)

        assert len(responses.calls) == 2
        assert filename == os.path.join(self.TEST_DIR, url_to_filename(url, etag="0"))

        with open(filename, 'rb') as cached_file:
            assert cached_file.read() == self.glove_bytes