'Test all files using the three above test functions.
This function generates additional tests.'

def test_all_files(self):

    for (parquet_file, csv_file) in self.files:
        (yield (self._test_file_csv, parquet_file, csv_file))
        (yield (self._test_file_json, parquet_file, csv_file))
        (yield (self._test_file_custom, parquet_file, csv_file))
