Posted by tac_admin, August 21, 2011

Iterative Test Design

When test design iteratively evolves in a top-down fashion throughout the Plan-Design-Execute phases of the testing lifecycle, this is considered iterative test design (ITD).

The ITD workflow can be defined as the following four steps:

  1. Identify generic product quality risks and develop a high-level approach to application testing.
  2. Identify specific quality risks existing in a use case context and develop ideas about what to test.
  3. Refine a use case test approach and develop ideas about what and how to test.
  4. Manually execute tests to explore the product and search for new test ideas.

Iterative Test Design Benefits:

  • ITD provides testers with a framework for product exploration and effective test design when requirements are incomplete or evolving.
  • ITD is defined based on a top-down workflow that helps testers to better cope with the functional complexity of a system under test.
  • High-level test design specifications, the main deliverable of the ITD approach, are easy to review and maintain.
  • By delivering test designs early in the process, the approach provides management with better visibility into the expected cost and effectiveness of functional testing.

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