Unit Testing - Python

Python code examples for Unit Testing

How examples are written

The examples are written to reflect how a simple OrderValidator class which doesn't follow Single Responsibility Principle isn't unit testable can be split to multiple testable classes that following that principle and are unit testable.

1. The not testable examples are under folders "not_testable"
2. The testable examples are under folders "testable"

The test code uses:

1. pytest as the test framework of choice
2. freezegun in order to control datetime.now results in tests

Running the examples

1. Clone this repo
2. Install Python 3.10 if not already installed
3. Install Python poetry dependency management tool: https://python-poetry.org/docs/
4. Open a terminal (cmd/bash/PowerShell/etc.)
5. Recommended: configure poetry to create virtual environments in project folder: poetry config virtualenvs.in-project true
6. Navigate to repo root directory
7. Install dependencies using poetry: poetry install
8. Activate the virtual environment: poetry shell
9. Run the tests: poetry run pytest