Installing and managing plugins in PyTest - Quick Revision & Summary

Recall & Review

beginner

What is a pytest plugin?

A pytest plugin is an add-on that extends pytest's features, like adding new commands or hooks to customize test runs.

beginner

How do you install a pytest plugin?

You install a pytest plugin using pip, for example: pip install pytest-plugin-name.

intermediate

How can you check which pytest plugins are currently installed?

Run pytest --trace-config in the terminal to see all active plugins and their configurations.

intermediate

What is the purpose of the pytest_plugins variable in a test file?

It tells pytest which plugins to load for that test file, allowing selective plugin usage.

beginner

How do you uninstall a pytest plugin?

Use pip to uninstall it, for example: pip uninstall pytest-plugin-name.

Which command installs a pytest plugin named 'pytest-cov'?

A pip install pytest-cov

B pytest install pytest-cov

C pip pytest install cov

D pytest --install pytest-cov

Use pip to install pytest plugins, so the correct command is pip install pytest-cov.

How do you list all active pytest plugins?

A pytest --trace-config

B pytest --list-plugins

C pip list pytest-plugins

D pytest --show-plugins

The command pytest --trace-config shows all active plugins and their configurations.

What file or variable can specify plugins to load for a test session?

A pytest.ini

B setup.cfg

C requirements.txt

D pytest_plugins variable

The pytest_plugins variable in test files specifies which plugins to load.

Which tool manages pytest plugin installation and removal?

A pytest

B pip

C virtualenv

D tox

pip is used to install and uninstall pytest plugins.

If a plugin is not working after installation, what is a good first step?

A Restart the computer

B Delete the test files

C Run <code>pytest --trace-config</code> to check if the plugin is active

D Reinstall Python

Checking active plugins with pytest --trace-config helps verify if the plugin loaded correctly.

Explain how to install, verify, and uninstall a pytest plugin.

Think about commands for adding, checking, and removing plugins.

Describe the role of the pytest_plugins variable and when you might use it.

Consider how to control plugin loading per test file.