Learn about automated software testing with Python, BDD, Selenium WebDriver, and Postman, focusing on web applications
About This Video
In Detail
Welcome to the most comprehensive course on automated software testing with Python. Software testing is an essential skill for any developer, and this course will help you truly …
Learn about automated software testing with Python, BDD, Selenium WebDriver, and Postman, focusing on web applications
About This Video
In Detail
Welcome to the most comprehensive course on automated software testing with Python. Software testing is an essential skill for any developer, and this course will help you truly understand all types of test automation with Python.
The focus of this course is on testing for the web-we'll be working with REST APIs and web applications, and technologies such as unittest, Postman, and Selenium WebDriver-ranging from operations such as mocking and patching using the unit test library (to reduce dependencies and turn complex tests into simple ones) to looking at all types of testing: simple unit tests to large system tests and even customer acceptance tests.
Throughout the course we work on the Testing Pyramid concept, making sure that we have full coverage of every system component with unit tests. Then we test dependencies using integration tests. Finally, we cover the entire system using system tests. Of course, we also look at what acceptance testing is, how we come up with acceptance tests, and some of the best ways to write acceptance tests for a web application using Behavior-Driven Development and Selenium WebDriver. We also learn about implicit and explicit waits with Selenium WebDriver and Python, a key concept used to speed up the runtime of your acceptance tests. By implementing a Continuous Integration pipeline that runs your tests whenever you make any changes, you'll have much higher project quality so that you don't miss any annoying bugs. We'll look at putting our projects into GitHub and linking with them.
Who this book is for
This course is designed for students who want to test their Python applications in order to build more complete solutions, professionals keen to learn more about automated software testing in their workplace, automated software testers, and software developers.
Chapter 1 : Welcome
Welcome to the course
Chapter 2 : A Full Python Refresher
Variables in Python
String formatting in Python
Getting user input
Writing our first Python app
Lists, tuples, and sets
Advanced set operations
Booleans in Python
If statements
The “in” keyword in Python
If statements with the “in” keyword
Loops in Python
List comprehensions in Python
Dictionaries
Destructuring variables
Functions in Python
Function arguments and parameters
Default parameter values
Functions returning values
Lambda functions in Python
Dictionary comprehensions
Unpacking arguments
Unpacking keyword arguments
Object-Oriented Programming in Python
Magic methods: str and repr
@classmethod and @staticmethod
Class inheritance
Class composition
Type hinting in Python 3.5+
Imports in Python
Relative imports in Python
Errors in Python
Custom error classes
First-class functions
Simple decorators in Python
The “at” syntax for decorators
Decorating functions with parameters
Decorators with parameters
Mutability in Python
Mutable default parameters (and why they’re a bad idea)
Chapter 3 : Your first automated software test
Introduction to this section
Setting up our project
Writing our first test
Testing dictionary equivalence
Writing blog tests and PyCharm run configurations
The repr method, and intro to TDD
Integration tests and finishing the blog
Mocking, patching, and system tests
Patching the input method and returning values
Taking our patching further
The last few patches!
The TestCase setUp method
Conclusion of this section
Chapter 4 : Testing a Flask Endpoint
Introduction to this section
Setting our project up
Creating our Flask app
Our first System test
Refactoring our System Tests
Conclusion of this section
Chapter 5 : REST API Testing, Part I
Introduction to this section
A look at a REST API with Flask
Unit testing a REST API
Setting up our generic BaseTest
Integration testing a REST API
Conclusion of this section
Chapter 6 : REST API Testing, Part II
Introduction to this section
Setting up our project
Testing foreign key constraints with Python
Unit testing models and SQLAlchemy mappers
Finishing our Store tests
Conclusion of this section
Chapter 7 : System testing a REST API
Introduction to this section
Setting project up and creating User model
Allowing users to log in
Writing our User tests
The setUpClass method in the BaseTest
Testing user registration
Finalising user System tests
Writing Store System tests
Writing our Item System tests and testing authentication
Conclusion of this section
Chapter 8 : System testing with Postman and Newman
Introduction to this section
Introduction to Postman
Our first Posman tests
Setting and clearing environment variables in Postman
Running a test folder in Postman
Advanced PyCharm run configurations
Installing Node and Newman
Multirun in PyCharm—Running app and tests together
Conclusion of this section
Chapter 9 : Continuous Integration with Travis CI
Introduction to this section
Installing Git
What is a Git repository?
A local Git workflow
GitHub and remote repositories
Adding our project to GitHub
What is Travis CI?
Adding our repository to Travis
The Travis config file and running tests
Adding our test badge to the Readme
Conclusion of this section
Chapter 10 : Acceptance testing and browser automation with Selenium
Introduction to this section
What is acceptance testing?
Introduction to our project
Our first acceptance test step
Getting the Chrome webdriver
Verifying everything works
Finishing our first test
Re-using steps with the regular expression matcher
Our first content test
Page locators and models
The blog page
Using pages in navigation
Don’t over-generalise tests!
Waits and timeouts with Selenium
Debugging acceptance tests in PyCharm
Our final complex scenario
Filling in forms with Selenium
Conclusion of this section