pyproject.toml configuration in PyTest - Test Execution Trace

Test Overview

This test checks if pytest correctly reads configuration from pyproject.toml to set test markers and options. It verifies that a test marked as smoke runs and passes.

Test Code - pytest

PyTest

import pytest

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

# Run command:
# pytest -m smoke

# pyproject.toml content:
# [tool.pytest.ini_options]
# markers = ["smoke: mark test as smoke test"]
# addopts = "-m smoke"

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Test runner starts pytest	pytest reads pyproject.toml configuration file	-	PASS
2	pytest applies ini_options from pyproject.toml, enabling 'smoke' marker and '-m smoke' option	pytest is configured to run only tests marked with 'smoke'	-	PASS
3	pytest discovers test_example function	test_example is marked as 'smoke'	-	PASS
4	pytest runs test_example	test_example executes assert 1 + 1 == 2	assert 2 == 2	PASS
5	pytest reports test_example passed with 'smoke' marker	Test report shows 1 passed test with smoke marker	test count and marker correctness	PASS

Failure Scenario

Failing Condition: pyproject.toml is missing or misconfigured, so pytest does not recognize the 'smoke' marker or the '-m smoke' option

Execution Trace Quiz - 3 Questions

What does pytest read from pyproject.toml to recognize the 'smoke' marker?

A The [pytest] section with 'testpaths'

B The [tool.pytest.ini_options] section with 'markers' list

C The [tool.black] section for formatting

D The [tool.isort] section for imports

Key Result

Using pyproject.toml to configure pytest markers and options helps keep test settings centralized and consistent without command line flags.