Testing

A key to building software that meets requirements without defects is testing. Software testing helps developers know they are building the right software. When tests are run as part of the development process (often with continuous integration tools), they build confidence and prevent regressions in the code.

Visit the following resources to learn more:

• What is Software Testing?
• Testing Pyramid
• Automate Quality, Security Checks for Python Library Dependencies

PyUnit / Unittest

PyUnit is an easy way to create unit testing programs and UnitTests with Python. (Note that docs.python.org uses the name "unittest", which is also the module name.)

Visit the following resources to learn more:

• How To Use unittest to Write a Test Case for a Function in Python
• PyUnit Docs
• A Gentle Introduction to Unit Testing in Python

pytest

pytest is a mature full-featured Python testing tool that helps you write better programs.

Visit the following resources to learn more:

• Official Docs
• Pytest Tutorial

Doctest

Python's standard library comes equipped with a test framework module called doctest. The doctest module programmatically searches Python code for pieces of text within comments that look like interactive Python sessions. Then, the module executes those sessions to confirm that the code referenced by a doctest runs as expected.

Visit the following resources to learn more:

• Doctest module reference
• How To Write Doctests in Python

Nose

Nose is another opensource testing framework that extends unittest to provide a more flexible testing framework.

Visit the following resources to learn more:

• Introduction to Nose
• Getting Started With Nose In Python