pytest-xdist installation - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is pytest-xdist used for?

pytest-xdist is a plugin for pytest that allows running tests in parallel across multiple CPUs or hosts to speed up test execution.

beginner

How do you install pytest-xdist?

You install pytest-xdist using the command: pip install pytest-xdist.

beginner

What command runs tests in parallel using pytest-xdist?

Use pytest -n <number_of_workers> to run tests in parallel, where <number_of_workers> is how many parallel workers you want.

beginner

Why is it helpful to run tests in parallel?

Running tests in parallel reduces total test time, making feedback faster and improving productivity.

beginner

What should you check if pytest-xdist installation fails?

Check that you have Python and pip installed correctly, your internet connection is working, and you have permission to install packages.

Which command installs pytest-xdist?

A install pytest-xdist

B pip install pytest-xdist

C pip install xdist-pytest

D pytest install xdist

The correct command is pip install pytest-xdist to install the plugin.

What does the -n option do in pytest?

A Runs tests in parallel

B Runs tests sequentially

C Specifies test file name

D Generates test report

The -n option tells pytest-xdist how many parallel workers to use.

If you want to run tests on 4 CPUs in parallel, which command is correct?

A pytest -n 4

B pytest --cpu 4

C pytest -p 4

D pytest --parallel 4

Use pytest -n 4 to run tests on 4 parallel workers.

What is a common reason for pytest-xdist installation failure?

A Running tests without xdist

B Using Python 3

C No internet connection

D Not having test files

Without internet, pip cannot download pytest-xdist, causing installation failure.

Which of these is NOT a benefit of pytest-xdist?

A Faster test execution

B Parallel test running

C Better resource use

D Automatic bug fixing

pytest-xdist speeds up tests but does not fix bugs automatically.

Explain how to install and use pytest-xdist to run tests in parallel.

Think about the installation command and the pytest option to run tests on multiple CPUs.

What are common issues you might face when installing pytest-xdist and how to solve them?

Consider environment and setup problems that block package installation.