Test management is a critical problem for in-time correction-based testability growth test. For the existing testability growth model, they are either too complex to be implemented in practice, or do not have the ability to draw a smooth test planning/projecting curve. This paper proposes a unified model for in-time correction-based testability growth test and presents its application on the test planning. Firstly, a simple model with only three parameters is developed, and its compatibility with the original Markov model is proved. The revised model only has three parameters, which can reduce the complexity of parameters estimation and increase the certainty of the test planning. Secondly, the paper incorporates the simplified transition probability model with the test cost model and studies the optimal test planning method with the minimum test cost criterion. To illustrate the efficacy of the proposed model, an application of the model to an attitude control system of a helicopter available in the open literature is given. The simulation demonstrates that the model and the method proposed in this paper are reasonable, and they are useful for effectively managing the testability growth test planning problem during system maturation.

测试管理是基于时间修正的可测性增长测试的关键问题。对于现有的可测试性增长模型，它们要么过于复杂而无法在实践中实现，要么不具备绘制平滑测试计划/投影曲线的能力。本文提出了一种基于时间校正的可测性增长测试的统一模型，并介绍了其在测试计划中的应用。首先，开发了一个只有三个参数的简单模型，并证明了它与原始马尔科夫模型的兼容性。修正后的模型只有三个参数，可以降低参数估计的复杂度，增加测试计划的确定性。第二，将简化转移概率模型与测试成本模型相结合，研究以最小测试成本为准则的最优测试计划方法。为了说明所提出模型的有效性，给出了该模型在公开文献中可用的直升机姿态控制系统的应用。仿真表明，本文提出的模型和方法是合理的，有助于有效管理系统成熟过程中的可测试性增长测试计划问题。