tmp_path and tmp_path_factory in PyTest - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is tmp_path in pytest?

tmp_path is a built-in pytest fixture that provides a temporary directory as a pathlib.Path object for tests to use. It is unique for each test and is deleted after the test finishes.

intermediate

How does tmp_path_factory differ from tmp_path?

tmp_path_factory is a pytest fixture that allows you to create multiple temporary directories during a test session. It is useful when you need more than one temporary directory, unlike tmp_path which provides only one per test.

intermediate

How do you create a new temporary directory using tmp_path_factory?

You call tmp_path_factory.mktemp('name') to create a new temporary directory with the given name prefix. It returns a pathlib.Path object pointing to the new directory.

beginner

Why is it better to use tmp_path or tmp_path_factory instead of hardcoding temp directories in tests?

Using tmp_path or tmp_path_factory ensures tests run in isolated, unique temporary directories. This avoids conflicts, keeps tests independent, and cleans up automatically after tests finish.

beginner

What type of object do tmp_path and tmp_path_factory provide for temporary directories?

Both provide pathlib.Path objects, which are easy to use for file and directory operations in Python tests.

What does the pytest fixture tmp_path provide?

A A permanent directory shared across tests

B A temporary directory as a pathlib.Path object unique to each test

C A temporary file object

D A database connection

tmp_path gives a unique temporary directory as a pathlib.Path object for each test.

Which pytest fixture allows creating multiple temporary directories during a test session?

A tmp_dir

B tmp_path

C tmp_file

D tmp_path_factory

tmp_path_factory lets you create multiple temporary directories as needed.

How do you create a new temporary directory named 'data' using tmp_path_factory?

A tmp_path_factory.mktemp('data')

B tmp_path_factory.make('data')

C tmp_path_factory.new_dir('data')

D tmp_path_factory.create('data')

Use mktemp('data') to create a new temporary directory named with prefix 'data'.

What type of object do tmp_path and tmp_path_factory return?

A pathlib.Path

B os.DirEntry

C str

D file object

They return pathlib.Path objects for easy file system operations.

Why should tests use tmp_path instead of hardcoded temp directories?

A To use less memory

B To speed up tests

C To avoid conflicts and ensure cleanup

D To connect to a database

Using tmp_path avoids conflicts between tests and cleans up automatically.

Explain how tmp_path and tmp_path_factory help manage temporary directories in pytest tests.

Think about how tests need isolated folders to avoid conflicts.

Describe the steps to create and use a new temporary directory inside a test using tmp_path_factory.

Focus on the method to create directories and how to use the path.