GoTri QR Payment Codes

This repository contains the example code for Chapter 4 in Andrew Knight's book, The Way To Test Software. Each section of the chapter iteratively builds a small test automation solution in Python to test QR payment codes for a fictitious public transit system named "GoTri".

The example code for each section is placed into subdirectories within this repository so you can view and execute the progress as a snapshot made at each stage of its development.

1. Section 4.1 shows a few functions for generating QR payment codes.
2. Section 4.2 shows how to build a custom test framework from scratch.
3. Section 4.3 shows how to rewrite the entire test solution using pytest.
4. Section 4.4 shows a new set of tests developed using Test-Driven Development (TDD).

Installation

The example code should work on any operating system (Windows, macOS, Linux). To install it:

1. Install Python 3.8 or higher.
2. Clone this repository onto your local machine.
3. Install dependency packages from the command line:
   • Change directory to the project's root directory.
   • Run pip install -r requirements.txt to install all dependencies.

Execution

Each section subdirectory functions as its own project. The table below shows how to execute the code at each snapshot. Change directory into the project subdirectory before running commands.

Section	Project Subdirectory	Execution Commands
4.1	gotri_app	Load and call functions from the qrcodes module in the python interpreter
4.2.2	gotri_app	python test_qrcodes.py
4.2.3	gotri_app	python test_qrcodes.py
4.2.4	gotri_app	python run_all_tests.py
4.2.5	gotri_app	python run_all_tests.py
4.2.6	gotri_app	python run_all_tests.py
4.2.7	gotri_app	python run_all_tests.py
4.3	gotri_app_pytest	python -m pytest tests
4.4.2	gotri_app_pytest	python -m pytest tests
4.4.3	gotri_app_pytest	python -m pytest tests
4.4.4	gotri_app_pytest	python -m pytest tests