[Solved] You want to organize tests for a calculator app. You create two files: test_add.py and test_subtract.py.... How does pytest handle these test modules when you run pytest in the folder? | PyTest

PyTest - Test Organization

You want to organize tests for a calculator app. You create two files: test_add.py and test_subtract.py. Each file has multiple test functions starting with test_. How does pytest handle these test modules when you run pytest in the folder?

Apytest requires you to specify each test module to run tests.

Bpytest runs all test functions from both modules automatically.

Cpytest runs only tests from the first module alphabetically.

Dpytest runs tests only if you import modules manually.

Step-by-Step Solution

Solution:

Step 1: Understand pytest test discovery
pytest automatically finds all test modules named with test_ prefix and runs all test functions inside them.
Step 2: Apply to multiple test modules
When running pytest in the folder, it collects tests from both test_add.py and test_subtract.py and runs all test functions starting with test_.
Final Answer:
pytest runs all test functions from both modules automatically. -> Option B
Quick Check:
pytest auto-discovers all test modules and functions [OK]

Quick Trick: pytest runs all test_ modules and functions in folder automatically [OK]

Common Mistakes:

MISTAKES

Thinking pytest runs only one module at a time
Believing manual imports are needed for tests
Assuming tests must be specified explicitly

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More PyTest Quizzes

How does pytest handle these test modules when you run pytest in the folder?

Step 1: Understand pytest test discovery

Step 2: Apply to multiple test modules

Final Answer:

Quick Check:

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