PyTest - Parametrize
Which of the following is the correct way to parametrize a test function with two parameters
a and b?Which of the following is the correct way to parametrize a test function with two parameters a and b?
easy🧠 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Check the syntax for multiple parameters
The correct syntax uses a string with parameter names separated by commas and a list of tuples for values.Step 2: Validate each option
@pytest.mark.parametrize('a,b', [(1, 2), (3, 4)]) matches the correct syntax. @pytest.mark.parametrize(['a', 'b'], [1, 2, 3, 4]) incorrectly uses a list of strings and a flat list of values. @pytest.mark.parametrize('a,b', [1, 2, 3, 4]) uses a flat list instead of tuples. @pytest.mark.parametrize('a', [1, 2]) @pytest.mark.parametrize('b', [3, 4]) applies two separate parametrize decorators, which is valid but changes test combinations.Final Answer:
@pytest.mark.parametrize('a,b', [(1, 2), (3, 4)]) -> Option BQuick Check:
Parametrize syntax = string names + list of tuples [OK]
Quick Trick: Use string names and list of tuples for multiple params [OK]
Common Mistakes:
MISTAKES- Passing flat lists instead of list of tuples
- Using list of strings for parameter names
- Applying multiple parametrize decorators without understanding combinations
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