TDD - Red, Green, Refactor

Installation:

pip3 install -r requirements.txt

Pytest notes:

Official pytest-documentation

pytest              # run tests with minimal output
pytest -v           # run tests, listing name of all tests
pytest -v -s        # run tests, listing name of all tests, and show stdout

If a previously green test starts failing during "red", i.e. working to make a new test pass, comment out the new test and do the refactoring needed. This to avoid refactoring and adding new functinality at the same time.

@pytest.mark.skip(reason="new test disabled during refactoring")

Code Formatting

This project uses black to format code and flake8 for linting.

Format all files using command-line:

black <directory>

Lint all files:

flake8 --ignore=E203,E501

VSCode:

• install VSCode extension Python: Black
• shift+alt+f => format code
• .vscode/settings.json file contains VSCode settings for black and flake8
  • black autoformat on save
  • flake8 linting ("problems" tab and squiggly lines)

Python notes:

Socratica youtube-video on python exceptions.