通过最有效的手段（包括方法、技术和工具）完成所有必要的测试，实现事先所要求的需求和代码的测试覆盖率，最终能准确地给出软件产品一个完整的质量评估，使测试达到相对完美的水平。-Through the most effective means (including the methods, techniques, and tools) to complete all the necessary tests, implementation requirements, and code test coverage required in advance, the final product can accurately give a complete software quality assessment, so that the test to achieve a relatively perfect level.