[Solved] Given this pytest.ini content:[pytest] markers = smoke: quick smoke tests regression: regression testsAnd tests:@pytest.mark.smoke def test_smoke(): pass @pytest.mark.... | PyTest

PyTest - Markers

Given this pytest.ini content:

[pytest]
markers =
    smoke: quick smoke tests
    regression: regression tests

And tests:

@pytest.mark.smoke
def test_smoke(): pass

@pytest.mark.regression
def test_regression(): pass

@pytest.mark.performance
def test_perf(): pass

What happens when you run pytest -m performance?

ANo tests run but no error

BOnly test_perf runs successfully

CAll tests run ignoring markers

Dpytest raises an unknown marker error

Step-by-Step Solution

Solution:

Step 1: Check marker registration in pytest.ini
Only 'smoke' and 'regression' markers are registered. 'performance' is unregistered.
Step 2: Effect of unregistered marker 'performance'
pytest warns about the unknown marker but collects test_perf and runs it successfully since it matches '-m performance'. Other tests do not match.
Final Answer:
Only test_perf runs successfully -> Option B
Quick Check:
Unregistered marker with -m: warning but matching test runs [OK]

Quick Trick: Always register all custom markers in pytest.ini [OK]

Common Mistakes:

MISTAKES

Master "Markers" in PyTest

9 interactive learning modes - each teaches the same concept differently

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