Metamorphic testing · Question 60 of 60
A speech recognition system has correctly transcribed a sentence. Which follow-up test cases can be derived from metamorphic relations whose expected result is the same transcript?
2 answers are correct. Hard
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Answer
- B The same recording at a somewhat lower volume
- D The same recording with slight background noise
Explanation
Metamorphic relations describe how changes in the input are reflected in the expected result. Slight perturbations such as background noise or lower volume should not change the transcript (invariance). Metamorphic testing is already used in voice recognition. A completely different sentence is not a follow-up test case of the source case.