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Design and Develop Tests

In the test design process, the high-level test cases identified during the planning process are developed in detail (step-by-step). Developers and testers finalize the test cases based on approved technical designs. The written test cases can also serve as blueprints for developing automated test scripts. Test cases should be developed with strong participation from the business analyst to understand the details of usage, and less-common use cases.

Design evaluation is the first form of testing, and often the most effective. Unfortunately, this process is often neglected. In this process, business analysts and developers verify that the design meets the business unit requirements. Development work should not start in earnest until there is agreement that the designed solution meets requirements. The business analyst who defines the requirements should approve the design.

Preventing design defects or omissions at this stage is more cost effective than addressing them later in the project. If a design is flawed from the beginning, the cost to redesign after implementation can be high.