ax-va / pytest-okken-2022

Original source code

The link to the original source code is given on the official book's side

https://pragprog.com/titles/bopytest2/python-testing-with-pytest-second-edition/

Install using PyPI

Create a virtual environment, activate it on POSIX systems, and install pytest

$ python3 -m venv my_venv
$ source my_venv/bin/activate
(my_venv) $ pip install pytest

or using virtualenv

$ python3 -m pip install virtualenv
$ python3 -m virtualenv my_venv
$ source my_venv/bin/activate
(my_venv) $ pip install pytest

Deactivate the venv

(my_venv) $ deactivate

Create a virtual environment, activate it on Windows systems, and install pytest

C:\> python -m venv my_venv
C:\> my_venv\Scripts\activate.bat
(my_venv) C:\> pip install pytest

Activate in PowerShell

C:>my_venv\Scripts\Activate.ps1

Run pytest

Run a test modul:

$ pytest 01-introduction/test_01-1--passing.py

Run a test modul with the --verbose or -v flag:

$ pytest -v 01-introduction/test_01-1--passing.py

Run all tests starting with test_ or ending with _test in the current working directory without traceback

$ pytest --tb=no

Run tests given by their names or (sub)directories in which they are located

$ pytest --tb=no 01-introduction/test_01-1--passing.py 01-introduction/test_01-2--failing.py
$ pytest --tb=no 01-introduction

Run only specified functions

$ pytest -v 01-introduction/test_01-1--passing.py::test_passing

Conventions to keep your test code discoverable by pytest

• test_<something>.py or <something>_test.py for files
• test_<something> for methods and functions
• Test<Something> for classes