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This paper presents an implementation case study for business centric SOA test framework. The reference architecture of SOA system is usually layered: business process layer, service layer, and computing resource layer. In the architecture, there are so many subsystems to affect system performance, moreover they relate with each other. As a result, in the respect of overall performance, it is usually meaningless to measure each subsystem's performance separately. In SOA system, the performance of the business process layer with which users keep in contact depends on the summation of the performance of the other lower layers. Therefore, measuring performance of the business layer includes indirect measurement of the other SOA system layers. We devised a business-centric SOA test framework in which activities and control primitives in business process managers are simulated to invoke commands or services in a test scenario. That is, in the test framework, a real business process scenario can be replaced to a mimicked business process test scenario, which is executed in a test proxy based on event mechanism. In this paper, we present the concept of BPA simulation, 2-layered test suites model, and reference architecture.