基于因果图方法的测试工具的实现

因果图法是一种有效的功能测试方法，它能发现程序与外部说明书之间的差异，指出功能说明书的不完整性和二义性，它可以帮助人们系统地选择一组高效的测试用例，本文详细介绍了基于此方法开发的一个测试工具，该工具是由用户接口，数据转换，统计测试信息和判定表生成四个模块组成，同时介绍了因果图的物理存储和回溯策略等实现技术，最后对这一系统的实用性做一评价。

The Implementation of Testing Tool Based on Cause-and-Effect Graph Method

Cause and effect graph is an effective method in function testing. It can find discrepancies between the program and its external specification. It has a beneficial side effect in pointing out incompleteness and ambiguities in the specification. It is a technique that aids in selecting, in a systematic way, a high yield set of testing cases.A testing tool, based on the cause and effect graph is discussed,in detail. It consists of four parts, namely user interface, data transformer, testing information collector,and decision table generator. Some technique methods of tool implementation, such as CEG's physical storage and trace back strategy are introduced. Finally,an evaluation to this system is given.