acceptance criteria

The exit criteria that a component or system must satisfy in order to be accepted by a user, customer, or other authorized entity. [After IEEE 610]

acceptance testing

Formal testing with respect to user needs, requirements, and business processes conducted to determine whether or not a system satisfies the acceptance criteria and to enable the user, customers or other authorized entity to determine whether or not to accept the system [after IEEE 610].

accessibility testing

1. Testing to determine the ease by which users with disabilities can use the component or system [Gerrard]. 2. type of usability testing used to measure the degree to which a test item can be operated by users with the widest possible range of characteristics and capabilities


The capability of the software product to provide the right or agreed results or effects with the needed degree of precision [ISO 9126]. See also functionality testing.

accuracy testing

Testing to determine the accuracy of a software product. See also accuracy.

acting (IDEAL)

The phase within the IDEAL model where the improvements are developed, put into practice, and deployed across the organization. The acting phase consists of the activities: create solution, pilot/test solution, refine solution and implement solution. See also IDEAL.


User or any other person or system that interacts with the system under test in a specific way.

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