Bird
Raised Fist0

Identify the problem in this test code snippet:

medium📝 Debug Q7 of Q15
Testing Fundamentals - Why Software Testing Matters
Identify the problem in this test code snippet:
def test_list():
    items = [1, 2, 3]
    assert items[3] == 4
ASyntax error in list definition
BAssertion fails but no error
CIndexError because items[3] is out of range
DTest passes successfully
Step-by-Step Solution
Solution:
  1. Step 1: Check list indexing

    List items has indices 0,1,2; accessing index 3 causes IndexError.
  2. Step 2: Understand test behavior

    Error occurs before assertion can be evaluated, test fails with exception.
  3. Final Answer:

    IndexError because items[3] is out of range -> Option C
  4. Quick Check:

    Accessing invalid index causes error [OK]
Quick Trick: List indices start at 0; out-of-range causes error [OK]
Common Mistakes:
MISTAKES
  • Assuming assertion fails without error
  • Confusing syntax with runtime error
  • Thinking test passes

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