Testpaths configuration in PyTest - Test Execution Trace

Test Overview

This test checks that pytest only runs tests located in the specified testpaths directory. It verifies that tests outside this directory are not executed.

Test Code - pytest

PyTest

import pytest

def test_included_path():
    assert True

# pytest.ini content:
# [pytest]
# testpaths = tests

# Directory structure:
# /project
#   /tests
#     test_included.py (contains test_included_path)
#   /other
#     test_excluded.py (contains test_excluded_path)

# Run command:
# pytest

# Expected: Only test_included_path runs and passes, test_excluded_path is not collected.

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Pytest starts test discovery	Pytest reads pytest.ini and finds testpaths = tests	-	PASS
2	Pytest searches only inside the 'tests' directory for test files	Only test_included.py is found and collected	-	PASS
3	Pytest runs test_included_path()	Test function executes and returns True	assert True passes	PASS
4	Pytest ignores test_excluded.py outside 'tests' directory	test_excluded_path() is not collected or run	No assertion for excluded test as it is not run	PASS
5	Pytest finishes test run and reports results	Report shows 1 test collected and passed	Test count matches expected collected tests	PASS

Failure Scenario

Failing Condition: pytest.ini missing or testpaths not set correctly, causing tests outside 'tests' directory to run

Execution Trace Quiz - 3 Questions

What does the 'testpaths' setting in pytest.ini control?

A The timeout for each test

B The order in which tests run

C Which directories pytest searches for tests

D The test report format

Key Result

Using 'testpaths' in pytest.ini helps focus test runs on specific directories, improving test speed and organization by excluding unrelated tests.