How many test cases will pytest run if you use @pytest.mark.parametrize('p', [0,1]) and @pytest.mark.parametrize('q', ['a','b']) stacked on the same test function?

hard🚀 Application Q8 of 15

PyTest - Parametrize

You want to test a function with parameters p and q where p can be 0 or 1 and q can be 'a' or 'b'. How many test cases will pytest run if you use @pytest.mark.parametrize('p', [0,1]) and @pytest.mark.parametrize('q', ['a','b']) stacked on the same test function?

A2 test cases

B3 test cases

C1 test case

D4 test cases

Step-by-Step Solution

Solution:

Step 1: Understand stacking parametrize decorators
Stacked decorators create a Cartesian product of parameters.
Step 2: Calculate total test cases
2 values for p times 2 values for q equals 4 test cases.
Final Answer:
4 test cases -> Option D
Quick Check:
Stacked parametrize = product of param counts [OK]

Quick Trick: Stacked parametrize multiplies test cases [OK]

Common Mistakes:

MISTAKES

Assuming tests run only for one param set
Adding counts instead of multiplying
Confusing stacking with single decorator

Master "Parametrize" in PyTest

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Trace Try Challenge Automate Recall Frame

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More PyTest Quizzes

How many test cases will pytest run if you use @pytest.mark.parametrize('p', [0,1]) and @pytest.mark.parametrize('q', ['a','b']) stacked on the same test function?

Step 1: Understand stacking parametrize decorators

Step 2: Calculate total test cases

Final Answer:

Quick Check:

Want More Practice?