尽管现在的软件开发中正使用着众多的测试用例设计方法，然而最重要的测试用例设计因素却是经验和常识。
Even though there are numerous test case design techniques available in current software development world, the most important ingredients of any test design are experience and common sense.
详细探讨了面向对象单元测试、面向对象集成测试和面向对象系统测试的测试策略，以及相应的测试用例设计方法。
Testing strategies of object-oriented unit test, object-oriented integrate test, object-oriented system test and their designing approach of testing data were discussed in detail.
文章对正交试验进行了分析，并将其与软件测试理论相结合，提出了测试用例的正交设计方法。
Through analyzing the orthogonal test and incorporating it with the software testing theory, this paper puts forward an orthogonal method to design test cases.
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