[Solved] Why might a test double cause a test to pass even if the real object would fail? — Ans: Because the double only simulates behavior and may not reflect real logic | Ruby

Ruby - Testing with RSpec and Minitest

Why might a test double cause a test to pass even if the real object would fail?

ABecause doubles run the real code internally

BBecause the double only simulates behavior and may not reflect real logic

CBecause doubles always raise errors on method calls

DBecause doubles connect to the real database

Step-by-Step Solution

Solution:

Step 1: Understand test double behavior
Doubles simulate methods and return preset values without running real logic.
Step 2: Identify why tests might pass incorrectly
Since doubles don't execute real code, they can hide bugs that real objects would reveal.
Final Answer:
Because the double only simulates behavior and may not reflect real logic -> Option B
Quick Check:
Doubles simulate, not execute real code [OK]

Quick Trick: Doubles simulate behavior; real logic may differ [OK]

Common Mistakes:

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