Testing Fundamentals - Functional Testing Techniques
A tester wrote test inputs for a range 0 to 10 as: -1, 0, 1, 9, 10, 11. The test fails for input 11. What is the likely cause?
A tester wrote test inputs for a range 0 to 10 as: -1, 0, 1, 9, 10, 11. The test fails for input 11. What is the likely cause?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Identify valid input range
Valid inputs are from 0 to 10 inclusive; 11 is outside this range.Step 2: Understand boundary value testing rules
Testing just outside boundaries is to check error handling; failure on 11 means correct rejection.Final Answer:
Input 11 is outside the valid range; failure indicates correct error handling -> Option DQuick Check:
Outside boundary input failure is expected = Input 11 is outside the valid range; failure indicates correct error handling [OK]
Quick Trick: Outside boundary inputs test error handling, not valid acceptance [OK]
Common Mistakes:
- Expecting outside values to pass
- Confusing boundary with outside values
- Assuming test failure means bug
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