The amount of test data for integration of Web services is quite huge, which influences the quality and efficiency of testing. A method of test data selection for Web services composition based on mutation technology was proposed. The paths were generated from BPEL (Business Process Execution Language) document. Then interface mutation operator and path mutation operator were used to generate mutants. The effective test data was selected according to the ability of the initial test data that kills the mutants. The experimental results show that the method is effective and the selected test data are less but more effective.

Concerning the problem that some results are easily leaked while the component testing ontology is retrieved using the existed calculation method of ontology semantic similarity, a similarity calculation method based on concept and attribute was proposed to improve the retrieval efficiency of component testing information. Firstly, the structure, hierarchy, the number of offspring nodes and ancestor nodes of concept were used to calculate the concept similarity. Then, the attribute similarity was calculated based on the concept similarity of the attributes and its data type similarity. Finally, the concept similarity and attribute similarity were combined to calculate the comprehensive ontology semantic similarity. The experimental results indicate that the similarity calculation method can be applied in component testing and other domains effectively.