The speaking test is paper 5 of the Cambridge Advanced English exam. We cannot give you a practice speaking test, because you need someone to speak to. However, we will tell you about the test and give you some advice on how to prepare for it.
Remember: You will do this exam with another candidate. If you are the last people taking the exam that day, there might be more then one other candidate, but mostly there will two candidates doing the test. The other person is not a competitor. The interlocutor will make sure you have time to talk. Also people who try to do all the talking are showing poor language skills, and may even lose marks. Contribute to discussions, but do not completely dominate them. There will be two examiners. One is the interlocutor, who will talk to you. The other is the marker, who will sit quietly and take notes of your language skill.