def METHOD_NAME(self):
    """
    Write all data into one chunk
    """
    # test data fits into one chunk
    with split_gzip.SplitGzipFile(
        self.filename, 'wb', chunk_size_mb=1000, max_chunks=20
    ) as f_write:
        f_write.write(DATA_WITH_100_BYTES * 50)
    with gzip.open(f'{self.filename}.part00001', 'rb') as f_read:
        file_content = f_read.read()
    self.assertEqual(file_content, DATA_WITH_100_BYTES * 50)