Black Box - Orthogonal Array Testing

6)Orthogonal Array Testing Technique

The Orthogonal Array Testing Strategy (OATS) is a systematic, statistical way of testing pair-wise interactions by deriving a suitable small set of test cases (from a large number of possibilities).

- 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