def METHOD_NAME():
    assert mapping_keys(
            "You have requested your password on %(site_title)s to be reset.\n"
            "\n"
            "Please click the following link to confirm this request:\n"
            "\n"
            "   %(reset_link)s\n") == ['%(reset_link)s', '%(site_title)s']
    assert mapping_keys(
            "The input field %(name)s was not expected.") == ['%(name)s']
    assert mapping_keys(
            "[1:You searched for \"%(query)s\". ]%(number_of_results)s "
            "datasets found.") == ['%(number_of_results)s', '%(query)s']
    assert mapping_keys("Blah blah %s blah %(key)s blah %i") == (
        ['%(key)s']), mapping_keys("Blah blah %s blah %(key)s blah %i")