setup.cfg configuration in PyTest - Test Execution Trace

Test Overview

This test checks that pytest correctly reads configuration options from setup.cfg file. It verifies that a simple test runs and respects the configured markers and options.

Test Code - pytest

PyTest

import pytest

def test_example():
    assert 1 + 1 == 2

# setup.cfg content:
# [tool:pytest]
# markers = example_marker: mark test as example
# addopts = -v

# Run command:
# pytest --markers
# pytest test_sample.py

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	pytest starts and reads setup.cfg configuration file	pytest loads [tool:pytest] section with markers and addopts	pytest configuration options are loaded successfully	PASS
2	pytest discovers test_example function in test file	test_example function is found and ready to run	test function is detected by pytest	PASS
3	pytest runs test_example with verbosity enabled from addopts	test runs with verbose output	assert 1 + 1 == 2 is true	PASS
4	pytest finishes test run and reports results	test report shows 1 passed test with verbose details	test report matches expected output with configured verbosity	PASS

Failure Scenario

Failing Condition: setup.cfg file is missing or has syntax errors, so pytest does not load configuration

Execution Trace Quiz - 3 Questions

What does pytest read from setup.cfg before running tests?

A Configuration options like markers and command line arguments

B Test function code

C Test results from previous runs

D Python interpreter version

Key Result

Using setup.cfg to configure pytest helps keep test options centralized and consistent without repeating command line arguments.