How to use the pypistats._load_cache function in pypistats

def test__load_cache_bad_data(self):
        # Arrange
        with tempfile.NamedTemporaryFile(delete=False) as f:
            f.write(b"Invalid JSON!")

        # Act
        data = pypistats._load_cache(Path(f.name))

        # Assert
        self.assertEqual(data, {})

def test_cache_round_trip(self):
        # Arrange
        filename = pypistats.CACHE_DIR / "test_cache_round_trip.json"
        data = "test data"

        # Act
        pypistats._save_cache(filename, data)
        new_data = pypistats._load_cache(filename)

        # Tidy up
        filename.unlink()

        # Assert
        self.assertEqual(new_data, data)

def test__load_cache_not_exist(self):
        # Arrange
        filename = Path("file-does-not-exist")

        # Act
        data = pypistats._load_cache(filename)

        # Assert
        self.assertEqual(data, {})