Measuring test coverage of SoA services

One of the challenges of testing in a SoA environment is that testers do not have access to the source code of the services they are testing. Therefore they are not able to measure test coverage at the code level, as is done in conventional white-box testing. They are compelled to measure test coverage in other ways which satisfy the constraints of black-box testing. We propose some alternate means of measuring test coverage by focusing on the structure and content of the service interface without regarding the code. The result is a new way of measuring test coverage which can apply to testing in a SoA environment.