pytest.ini configuration - Test Execution Trace

Test Overview

This test checks that pytest reads the pytest.ini configuration file correctly and applies the specified markers and options during test execution.

Test Code - PyTest

PyTest

import pytest

@pytest.mark.slow
def test_example():
    assert 1 + 1 == 2

# Run with: pytest -m slow

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	Pytest starts and reads pytest.ini configuration file	pytest.ini file is present with markers and options defined	pytest recognizes the 'slow' marker from pytest.ini	PASS
2	Pytest collects tests and finds test_example marked with @pytest.mark.slow	Test suite includes test_example with 'slow' marker	Test is correctly marked as 'slow'	PASS
3	Pytest runs test_example with marker filter '-m slow'	Only tests marked 'slow' are executed	test_example runs and assertion 1 + 1 == 2 passes	PASS
4	Pytest finishes test run and generates report	Report shows test_example passed with marker 'slow'	Test report includes marker info and test passed status	PASS

Failure Scenario

Failing Condition: pytest.ini file missing or marker 'slow' not defined in pytest.ini

Execution Trace Quiz - 3 Questions

What does pytest.ini configure in this test?

A Changes Python version for tests

B Runs tests in parallel automatically

C Defines the 'slow' marker so pytest recognizes it

D Disables all tests except test_example

Key Result

Always register custom markers in pytest.ini to avoid warnings and ensure pytest recognizes them during test runs.