[Solved] Why is it important that unit tests are independent and isolated from each other? — Ans: To ensure one test's result does not affect another's outcome | Testing Fundamentals

Testing Fundamentals - Testing Types and Levels

Why is it important that unit tests are independent and isolated from each other?

ATo ensure one test's result does not affect another's outcome

BTo speed up the overall test execution time

CTo allow tests to share global variables easily

DTo reduce the number of test cases needed

Step-by-Step Solution

Solution:

Step 1: Understand test independence
Independent tests run without relying on others, so results are reliable and repeatable.
Step 2: Evaluate options
To ensure one test's result does not affect another's outcome correctly states the importance of isolation to prevent interference. Other options are incorrect or unrelated.
Final Answer:
To ensure one test's result does not affect another's outcome -> Option A
Quick Check:
Test independence prevents result interference [OK]

Quick Trick: Tests must not affect each other's results [OK]

Common Mistakes:

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