Book Image

Crafting Test-Driven Software with Python

By : Alessandro Molina
Book Image

Crafting Test-Driven Software with Python

By: Alessandro Molina

Overview of this book

Test-driven development (TDD) is a set of best practices that helps developers to build more scalable software and is used to increase the robustness of software by using automatic tests. This book shows you how to apply TDD practices effectively in Python projects. You’ll begin by learning about built-in unit tests and Mocks before covering rich frameworks like PyTest and web-based libraries such as WebTest and Robot Framework, discovering how Python allows you to embrace all modern testing practices with ease. Moving on, you’ll find out how to design tests and balance them with new feature development and learn how to create a complete test suite with PyTest. The book helps you adopt a hands-on approach to implementing TDD and associated methodologies that will have you up and running and make you more productive in no time. With the help of step-by-step explanations of essential concepts and practical examples, you’ll explore automatic tests and TDD best practices and get to grips with the methodologies and tools available in Python for creating effective and robust applications. By the end of this Python book, you will be able to write reliable test suites in Python to ensure the long-term resilience of your application using the range of libraries offered by Python for testing and development.
Table of Contents (18 chapters)
1
Section 1: Software Testing and Test-Driven Development
6
Section 2: PyTest for Python Testing
13
Section 3: Testing for the Web
16
About Packt

Writing Django tests with Django's test client

While on Python the most widespread testing toolkit is pytest, some web frameworks provide their own solutions for managing test suites. Django is one such example, even though it's possible (as we have seen in the previous section), most people tend to run their tests with the Django test client, which provides the same capabilities as WebTest but is a solution built explicitly for Django.

In this section, we are going to see how we can create a Django project and then run its tests using the standard Django testing infrastructure as well as a pytest-based one:

  1. The first step will be to create a new Django project, which we are going to call djapp:
$ django-admin startproject djapp

This will create a djapp directory where we can manage our Django project. In the project directory, we will find a manage.py file, which allows us to run various management operations for our project, from setting up the database to starting the web...