Project structure for tests in PyTest - Cheat Sheet & Quick Revision

Recall & Review

beginner

Why is it important to organize test files in a separate directory like tests/?

Keeping test files in a separate tests/ folder helps keep the project clean and makes it easy to find and run tests without mixing them with application code.

beginner

What naming convention should test files and test functions follow in pytest?

Test files should start with test_ or end with _test.py. Test functions inside should start with test_. This helps pytest automatically find and run them.

intermediate

What is the purpose of a conftest.py file in a pytest project?

conftest.py is used to share fixtures and setup code across multiple test files in the same directory or subdirectories, avoiding repetition.

intermediate

How can you structure tests for different parts of your application in pytest?

You can create subfolders inside tests/ for different modules or features, like tests/api/ or tests/ui/, to keep tests organized and easy to maintain.

intermediate

What file should you include to make your test directory a Python package and why?

Including an empty __init__.py file in the tests/ folder makes it a Python package, which can help with imports and test discovery in some cases.

Where should you place your test files in a pytest project?

A In a separate <code>tests/</code> directory

B Mixed with application code

C In the root directory only

D Inside <code>__pycache__</code> folder

Placing tests in a separate tests/ directory keeps the project organized and makes it easier to run tests.

What prefix should test functions have in pytest?

A check_

B test_

C run_

D func_

Test functions should start with test_ so pytest can automatically find and run them.

What is the role of conftest.py in pytest?

A To configure the Python interpreter

B To store test data files

C To share fixtures and setup code across tests

D To list all test files manually

conftest.py allows sharing fixtures and setup code without importing them explicitly.

How can you organize tests for different features in pytest?

A Use subfolders inside <code>tests/</code> for each feature

B Put all tests in one file

C Name test files randomly

D Place tests in the <code>src/</code> folder

Using subfolders helps keep tests organized by feature or module.

Why add an empty __init__.py file in the tests/ folder?

A To store test results

B To run tests faster

C To hide tests from pytest

D To make the folder a Python package for imports

An __init__.py file makes the folder a package, helping with imports and test discovery.

Describe a good project structure for organizing pytest tests in a medium-sized project.

Think about how to keep tests easy to find, run, and maintain.

Explain the purpose and benefits of using a conftest.py file in pytest projects.

Consider how to reuse setup code efficiently.