Test Suite uses the concepts of service execution, pipeline data, and the open source JUnit testing framework to provide unit testing functionality for Integration Server Flow and Java services. Test Suite provides the ability to create a suite of tests consisting of individual test cases. Each test case defines a service to be tested, the type of test to be performed, and provides a user interface to define input data to the test case through the pipeline. When the service execution is completed, the pipeline output is validated against the expected output defined in the test case.