[Solved] In Ruby testing, what role does a test double serve? — Ans: It simulates an object to isolate tests from external dependencies | Ruby

Ruby - Testing with RSpec and Minitest

In Ruby testing, what role does a test double serve?

AIt replaces the Ruby interpreter during test runs

BIt automatically generates test data for database records

CIt simulates an object to isolate tests from external dependencies

DIt compiles Ruby code into machine language for faster execution

Step-by-Step Solution

Solution:

Step 1: Understand test doubles
Test doubles are stand-ins for real objects used in tests to isolate behavior.
Step 2: Identify their purpose
They simulate objects to avoid dependencies on external systems or complex logic.
Final Answer:
It simulates an object to isolate tests from external dependencies -> Option C
Quick Check:
Test doubles isolate tests [OK]

Quick Trick: Test doubles simulate objects to isolate tests [OK]

Common Mistakes:

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