2.4.5 Orthogonal Array Testing

• Black-box technique that enables the design of a reasonably small set of test cases that provide maximum test coverage
• Focus is on categories of faulty logic likely to be present in the software component (without examining the code)
• Priorities for assessing tests using an orthogonal array
1. Detect and isolate all single mode faults
2. Detect all double mode faults
3. Multimode faults