pytest-xdist installation

Introduction

pytest-xdist helps run tests faster by running many tests at the same time on your computer.

You want to finish testing quickly when you have many tests.

You want to use all your computer's processors to run tests.

You want to run tests on different computers or environments at once.

You want to check if tests work well when run in parallel.

You want to save time during continuous integration or development.

Syntax

PyTest

pip install pytest-xdist

This command installs pytest-xdist using Python's package manager pip.

Make sure you have Python and pip installed before running this command.

Examples

Installs the latest version of pytest-xdist.

PyTest

pip install pytest-xdist

Installs a specific version (3.2.1) of pytest-xdist.

PyTest

pip install pytest-xdist==3.2.1

Sample Program

This simple test checks if 1 + 1 equals 2. You can run it with pytest-xdist to use 2 CPU cores and speed up testing.

PyTest

import pytest

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

# Run this test with pytest-xdist using 2 CPUs:
# Command: pytest -n 2

Important Notes

After installation, use pytest -n to run tests in parallel.

Using too many CPUs can slow down your computer, so choose a reasonable number.

pytest-xdist works well with most pytest tests but check compatibility if you use special plugins.

Summary

pytest-xdist lets you run tests at the same time to save time.

Install it easily with pip install pytest-xdist.

Run tests in parallel using pytest -n followed by the number of CPUs.