Test cases are the most important part for a test - they guide engineers through the whole process. A good test case not only possesses a well-defined intensity, but reasonable test caliber/coverage. Sigma-RT controls test case quality in two aspects: a) single case designing which ensures test intensity. b) test case distribution which ensures test coverage.

Based on customer’s functionality specification, Product Request Document (PRD) or Market Request Document (MRD), or just product user manual, our engineers can design quality test cases which cover functionality testing, CLI testing, negative testing, performance testing and end-to-end system testing. And our thorough review process, include internal review, peer review and external review, will guarantee the quality and the test coverage meet our customer's expectation.

Our reviewing process include internal review, peer review and external review in order that the test case quality and coverage meet customer demand. As for single test case designing, we pick qualified engineers at the project commencement, and Sigma elite team will give subject trainings prior to the project.

As for integral test case designing management, the test caliber should cover and identify all features (discipline) in PRD, e.g. customer's Image build environment supports code coverage. All new feature tests should cover the following:

• CLI or GUI test
• Feature verification
• Negative test
• Safety assessment
• Performance test
• System and customer solution test
• Stress test
• User scenario test