@Test
public void shouldFragmentMessageOverTwoFrames() {
final int msgLength = termAppender.maxPayloadLength() + 1;
final int headerLength = DEFAULT_HEADER.capacity();
final int frameLength = headerLength + 1;
final int requiredCapacity =
align(headerLength + 1, FRAME_ALIGNMENT) + termAppender.maxFrameLength();
final UnsafeBuffer buffer = new UnsafeBuffer(new byte[msgLength]);
when(metaDataBuffer.getAndAddInt(TERM_TAIL_COUNTER_OFFSET, requiredCapacity)).thenReturn(0);
assertThat(termAppender.append(buffer, 0, msgLength), is(requiredCapacity));
int tail = 0;
final InOrder inOrder = inOrder(termBuffer, metaDataBuffer);
inOrder
.verify(metaDataBuffer, times(1))
.getAndAddInt(TERM_TAIL_COUNTER_OFFSET, requiredCapacity);
verifyDefaultHeader(inOrder, termBuffer, tail, termAppender.maxFrameLength());
inOrder
.verify(termBuffer, times(1))
.putBytes(tail + headerLength, buffer, 0, termAppender.maxPayloadLength());
inOrder.verify(termBuffer, times(1)).putByte(flagsOffset(tail), BEGIN_FRAG);
inOrder.verify(termBuffer, times(1)).putInt(termOffsetOffset(tail), tail, LITTLE_ENDIAN);
inOrder.verify(termBuffer, times(1)).putIntOrdered(tail, termAppender.maxFrameLength());
tail = termAppender.maxFrameLength();
verifyDefaultHeader(inOrder, termBuffer, tail, frameLength);
inOrder
.verify(termBuffer, times(1))
.putBytes(tail + headerLength, buffer, termAppender.maxPayloadLength(), 1);
inOrder.verify(termBuffer, times(1)).putByte(flagsOffset(tail), END_FRAG);
inOrder.verify(termBuffer, times(1)).putInt(termOffsetOffset(tail), tail, LITTLE_ENDIAN);
inOrder.verify(termBuffer, times(1)).putIntOrdered(tail, frameLength);
}
@Test
public void shouldReportMaxFrameLength() {
assertThat(termAppender.maxFrameLength(), is(MAX_FRAME_LENGTH));
}