@Test(expected = IllegalArgumentException.class)
public void shouldThrowExceptionWhenMaxMessageLengthExceeded() {
final UnsafeBuffer srcBuffer = new UnsafeBuffer(new byte[1024]);
broadcastTransmitter.transmit(
MSG_TYPE_ID, srcBuffer, 0, broadcastTransmitter.maxMsgLength() + 1);
}
@Test(expected = IllegalArgumentException.class)
public void shouldThrowExceptionWhenMessageTypeIdInvalid() {
final int invalidMsgId = -1;
final UnsafeBuffer srcBuffer = new UnsafeBuffer(new byte[1024]);
broadcastTransmitter.transmit(invalidMsgId, srcBuffer, 0, 32);
}
@Test
public void shouldApplyPaddingWhenInsufficientSpaceAtEndOfBuffer() {
long tail = CAPACITY - RECORD_ALIGNMENT;
int recordOffset = (int) tail;
final int length = RECORD_ALIGNMENT + 8;
final int recordLength = length + HEADER_LENGTH;
final int recordLengthAligned = align(recordLength, RECORD_ALIGNMENT);
final int toEndOfBuffer = CAPACITY - recordOffset;
when(buffer.getLong(TAIL_COUNTER_INDEX)).thenReturn(tail);
final UnsafeBuffer srcBuffer = new UnsafeBuffer(new byte[1024]);
final int srcIndex = 0;
broadcastTransmitter.transmit(MSG_TYPE_ID, srcBuffer, srcIndex, length);
final InOrder inOrder = inOrder(buffer);
inOrder.verify(buffer).getLong(TAIL_COUNTER_INDEX);
inOrder
.verify(buffer)
.putLong(TAIL_INTENT_COUNTER_OFFSET, tail + recordLengthAligned + toEndOfBuffer);
inOrder.verify(buffer).putInt(lengthOffset(recordOffset), toEndOfBuffer);
inOrder.verify(buffer).putInt(typeOffset(recordOffset), PADDING_MSG_TYPE_ID);
tail += toEndOfBuffer;
recordOffset = 0;
inOrder.verify(buffer).putInt(lengthOffset(recordOffset), recordLength);
inOrder.verify(buffer).putInt(typeOffset(recordOffset), MSG_TYPE_ID);
inOrder.verify(buffer).putBytes(msgOffset(recordOffset), srcBuffer, srcIndex, length);
inOrder.verify(buffer).putLong(LATEST_COUNTER_INDEX, tail);
inOrder.verify(buffer).putLongOrdered(TAIL_COUNTER_INDEX, tail + recordLengthAligned);
}
@Test
public void shouldTransmitIntoUsedBuffer() {
final long tail = RECORD_ALIGNMENT * 3;
final int recordOffset = (int) tail;
final int length = 8;
final int recordLength = length + HEADER_LENGTH;
final int recordLengthAligned = align(recordLength, RECORD_ALIGNMENT);
when(buffer.getLong(TAIL_COUNTER_INDEX)).thenReturn(tail);
final UnsafeBuffer srcBuffer = new UnsafeBuffer(new byte[1024]);
final int srcIndex = 0;
broadcastTransmitter.transmit(MSG_TYPE_ID, srcBuffer, srcIndex, length);
final InOrder inOrder = inOrder(buffer);
inOrder.verify(buffer).getLong(TAIL_COUNTER_INDEX);
inOrder.verify(buffer).putLong(TAIL_INTENT_COUNTER_OFFSET, tail + recordLengthAligned);
inOrder.verify(buffer).putInt(lengthOffset(recordOffset), recordLength);
inOrder.verify(buffer).putInt(typeOffset(recordOffset), MSG_TYPE_ID);
inOrder.verify(buffer).putBytes(msgOffset(recordOffset), srcBuffer, srcIndex, length);
inOrder.verify(buffer).putLong(LATEST_COUNTER_INDEX, tail);
inOrder.verify(buffer).putLongOrdered(TAIL_COUNTER_INDEX, tail + recordLengthAligned);
}
@Test
public void shouldCalculateCapacityForBuffer() {
assertThat(broadcastTransmitter.capacity(), is(CAPACITY));
}