def METHOD_NAME(self):
    assert "fips" in self.denom_data.index.names
    assert "timestamp" in self.denom_data.index.names
    expected_denom_columns = ["Denominator"]
    for col in expected_denom_columns:
        assert col in self.denom_data.columns
    assert len(set(self.denom_data.columns) - set(expected_denom_columns)) == 0