What will happen if you run pytest -m "not slow" on the following code? ```python import pytest @pytest.mark.slow def test_download(): assert True def test_upload(): assert True ```

medium📝 Predict Output Q5 of 15

PyTest - Test Organization

What will happen if you run pytest -m "not slow" on the following code? ```python import pytest @pytest.mark.slow def test_download(): assert True def test_upload(): assert True ```

ARuns only test_upload

BRuns only test_download

CRuns both tests

DRuns no tests

Step-by-Step Solution

Solution:

Step 1: Understand 'not' in marker expression
pytest -m "not slow" runs tests NOT marked with 'slow'.
Step 2: Identify tests without 'slow' marker
test_upload is unmarked, so it runs; test_download is marked slow, so skipped.
Final Answer:
Runs only test_upload -> Option A
Quick Check:
not slow runs unmarked tests [OK]

Quick Trick: Use 'not' to exclude tests with a marker [OK]

Common Mistakes:

MISTAKES

Running all tests ignoring 'not' filter
Running only marked tests instead of unmarked
Confusing marker negation syntax

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What will happen if you run pytest -m "not slow" on the following code? ```python import pytest @pytest.mark.slow def test_download(): assert True def test_upload(): assert True ```

Step 1: Understand 'not' in marker expression

Step 2: Identify tests without 'slow' marker

Final Answer:

Quick Check:

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