def METHOD_NAME(self):
    dct = get_selector_dict(
        """\
        selectors:
          - name: nightly_selector
            definition:
              tag: nightly
        """
    )
    sel_dict = SelectorDict.parse_from_selectors_list(dct["selectors"])
    assert sel_dict
    expected = {"method": "tag", "value": "nightly"}
    definition = sel_dict["nightly_selector"]["definition"]
    self.assertEqual(expected, definition)