new Partition(Broker.fromString(broker.getBrokerConnectionString()), 0), lastMessageOffset);
MessageAndOffset messageAndOffset = messageAndOffsets.iterator().next();
Message kafkaMessage = messageAndOffset.message();
ByteBuffer messageKeyBuffer = kafkaMessage.key();
String keyString = null;
String messageString = new String(Utils.toByteArray(kafkaMessage.payload()));
if (messageKeyBuffer != null) {
keyString = new String(Utils.toByteArray(messageKeyBuffer));
}
assertEquals(key, keyString);
assertEquals(message, messageString);