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A tester wrote test cases but forgot to include boundary values. What is the likely impact?

medium📝 Debug Q7 of Q15
Testing Fundamentals - Functional Testing Techniques
A tester wrote test cases but forgot to include boundary values. What is the likely impact?
AImproved coverage by focusing on main cases
BFaster testing with no coverage loss
CNo impact because boundaries are not important
DReduced coverage and missed edge case bugs
Step-by-Step Solution
Solution:

  1. Step 1: Understand boundary values importance

    Boundary values often reveal bugs at edges of input ranges.

  2. Step 2: Impact of missing boundaries

    Not testing boundaries reduces coverage and risks missing bugs.

  3. Final Answer:

    Reduced coverage and missed edge case bugs -> Option D

  4. Quick Check:

    Missing boundaries = missed edge bugs [OK]
Quick Trick: Always test boundaries for full coverage [OK]
Common Mistakes:
MISTAKES
  • Ignoring boundary importance
  • Assuming main cases cover all bugs
  • Thinking faster testing means better coverage

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