As service-oriented technology and cloud computing technology continue to mature, and especially the service-oriented architecture (SOA) continue to improve and proliferate, content Web services have become widely used. In order to take full advantage of general Web services and overcome the problem of limited functionality of individual Web service, the industry embraces approach of combining multiple atomic Web services in accordance with certain rules and business logic to provide more functionality and more powerful services, enabling the increment and reuse of Web services. To ensure the quality of the Web service composition, comprehensive and adequate testing of the Web service composition is required. However, due to the dynamic and distributed features of Web service composition, the testing techniques and methods are different from those of traditional software, thus bringing many challenges. This paper systematically summarizes and analyzes test case generation techniques, regression testing techniques, test execution and measurement methods in Web service composition testing research in recent years. The paper also provides an analysis and outlook on the issues that need to be studied in the Web service composition testing.