buffer = ByteBuffer.allocate(4 + 10);
buffer.put(fragment2);
buffer.flip();
buf = new ByteBufferBackedChannelBuffer(buffer);
channelBuffer = (ChannelBuffer) decoder.decode(
Mockito.mock(ChannelHandlerContext.class), Mockito.mock(Channel.class),
buf);
assertTrue(channelBuffer != null);
// Complete frame should have to total size 10+10=20
assertEquals(20, channelBuffer.readableBytes());