def METHOD_NAME(self):
    """
    ``str(DatabaseSchemaTooNew(...))`` returns a string identifying the
    exception and its details.
    """
    exc = DatabaseSchemaTooNew(1, 2)
    self.assertThat(
        "DatabaseSchemaTooNew(software_version=1, database_version=2)",
        MatchesAll(
            Equals(repr(exc)),
            Equals(str(exc)),
        ),
    )