ACC Enters the Fourth Dimension…

ACC (Attribute, Component, Capability) is an approach developed by Google for constructing test plans. Attributes are system properties that matter to the user. Components are structural units from the user's perspective. Capabilities are system actions implemented by components to deliver attributes. Within ACC, a system is represented as a matrix where columns correspond to attributes, rows to components, and cells contain capabilities. For each capability, the risk of failure is assessed, enabling optimal allocation of testing resources.

We have extended the classical method by introducing a fourth dimension. Initially, this dimension represented user classes. However, analysis of its application across various systems showed that the fourth dimension can take different forms depending on the project's specifics: user roles, time of day, frequency of use, context of application, or system dependencies. Potentially, even more dimensions may be introduced.