TMMi Level 3: Defined 已定义级别
At TMMi level 3, testing is no longer confined to a phase that follows coding. It is fully integrated into the development lifecycle and the associated milestones. Test planning is done at an early project stage, e.g., during the requirements phase, and is documented in a master test plan. The development of a master test plan builds on the test planning skills and commitments acquired at TMMi level 2. The organization’s set of standard test processes, which is the basis for maturity level 3, is established and improved over time. A test organization and a specific test training program exist, and testing is perceived as being a profession. Test process improvement is fully institutionalized as part of the test organization’s accepted practices.
在TMMI3等级，测试不再局限为作为代码之后的一个阶段。它完全集成到开发生命周期和相关的生命周期。测试计划在项目早期被制定。比如，在需求阶段，被文档化到一个主测试计划，主测试计划的开发是基于在TMMI2获得的测试计划技巧和承诺建立的。组织的标准测试流程是成熟度3的基础。被建立和一次次提高。一个测试组长和指定的测试培训项目存在。测试被认为一个专业工作。测试流程优化被充分的制度化，作为测试组织可接受实践的一部分。
Organizations at level 3 understand the importance of reviews in quality control; a formal review program is implemented although not yet fully linked to the dynamic testing process. Reviews take place across the lifecycle. Test professionals are involved in reviews of requirements specifications. Whereas the test designs at TMMi level 2 focus mainly on functionality testing, test designs and test techniques are expanded at level 3 to include nonfunctional testing, e.g., usability and/or reliability, depending on the business objectives.
组织在TMMI3理解质量控制审核的重要性，一个正式的审核程序被实施，虽然没有完全和动态测试流程联系起来。审核贯穿生命周期。测试专业性被包含在需求说明书审核中。鉴于测试设计在TMMI2主要焦距在功能性测试。TMMI3阶段测试设计和测试技术被扩展到非功能性测试。比如，可用性和可靠性，依赖于商业目标。
A critical distinction between TMMi maturity level 2 and 3 is the scope of the standards, process descriptions, and procedures. At maturity level 2 these may be quite different in each specific instance, e.g., on a particular project. At maturity level 3 these are tailored from the organization’s set of standard processes to suit a particular project or organizational unit and therefore are more consistent except for the differences allowed by the tailoring guidelines This tailoring also enables valid comparisons between different implementations of a defined process and easier movement of staff between projects. Another critical distinction is that at maturity level 3, processes are typically described more rigorously than at maturity level 2. Consequently, at maturity level 3 the organization must revisit the maturity level 2 process areas.
TMMI2和TMMI3的一个关键区别在于标准，流程描述，程序的的范围。在TMMI2每一个特定项目也许都不同。比如，在一个特定的项目， 在TMMI3中，这些（标准，流程，程序）被组织的标准流程裁剪来适应一个特殊的项目或者组织单元，因此他们更加一致除了一些裁剪指南允许的不同。这些裁剪同样允许合理的比较，在一个已定义流程的不同实施和不同项目的早期人员流动。其他的关键区别是在TMMI3，流程被通常描述为比TMMI2更加严密.因此，在tmmi3，组织需要重新访问TMMI流程域。
The process areas at TMMi level 3 are: TMMI3的流程域
3.1 Test Organization 测试组织
3.2 Test Training Program 测试培训项目
3.3 Test Lifecycle and Integration 测试生命周期和集成
3.4 Non-functional Testing 非功能测试
3.5 Peer Reviews 同行评审
Each of these is discussed in more detail in the sections hereafter 所有这些过程域被在下面各个部分讨论。