test_encoding.py 文件源码

def test_base64io_decode_readline(bytes_to_read, expected_bytes_read):
    source_plaintext = os.urandom(io.DEFAULT_BUFFER_SIZE * 2)
    source_stream = io.BytesIO(base64.b64encode(source_plaintext))

    with Base64IO(source_stream) as decoder:
        test = decoder.readline(bytes_to_read)

    assert test == source_plaintext[:expected_bytes_read]