为帮助确保得到足够的覆盖率，测试既在实验室条件下也在模拟的用户情形下进行。
Tests are conducted under laboratory conditions, as well as under simulated customer scenarios, to help ensure adequate coverage.
还必须考虑测试的类型，结合成功路径和边界条件，来获得尽可能好的覆盖率。
You have to also consider the types of tests, with both happy paths and boundary conditions, to have the best possible coverage.
理论和实验结果说明，如果满足测试条件，它们保证全故障覆盖，且产生较少的测试用例。
Theory and experiments show that the cases suites guarantee full coverage and the methods generate less test cases if it satisfies some assumptions.
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