pytest-xdist installation - Test Execution Trace

Test Overview

This test checks if the pytest-xdist plugin is installed correctly and can be used to run tests in parallel. It verifies that the plugin is available and that tests run with multiple workers.

Test Code - pytest

PyTest

import pytest

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

if __name__ == '__main__':
    # Run pytest with 2 workers using pytest-xdist
    import sys
    sys.exit(pytest.main(['-n', '2']))

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	Test starts by importing pytest and defining a simple test function	Python environment with pytest and pytest-xdist installed	-	PASS
2	Runs pytest with the '-n 2' option to use 2 parallel workers	pytest-xdist plugin is loaded and ready to distribute tests	pytest recognizes '-n 2' option and starts 2 workers	PASS
3	pytest discovers and runs the test_sample function with parallel workers	Two worker processes are started, one executes the test	test_sample passes	PASS
4	pytest completes test run and reports results	Test report shows 1 test passed with 2 workers	All tests passed with no errors	PASS

Failure Scenario

Failing Condition: pytest-xdist plugin is not installed or not recognized

Execution Trace Quiz - 3 Questions

What does the '-n 2' option do in the pytest command?

A Runs tests twice sequentially

B Limits tests to 2 test cases only

C Runs tests using 2 parallel workers

D Runs tests with 2 retries on failure

Key Result

Always verify that required plugins like pytest-xdist are installed before using their options to avoid command errors.