def METHOD_NAME(self):
    """Test the check_feed method of the cpan backend."""
    generator = backend.CpanBackend.check_feed()
    items = list(generator)
    self.assertEqual(
        items[0],
        (
            "URI-Fast",
            "https://metacpan.org/release/URI-Fast/",
            "CPAN (perl)",
            "0.38_06",
        ),
    )
    self.assertEqual(
        items[1],
        (
            "Model-Envoy",
            "https://metacpan.org/release/Model-Envoy/",
            "CPAN (perl)",
            "0.2.4",
        ),
    )
    # etc...