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Project Title

This is a simple Flask application for storing and getting ToDo tasks. It uses Flask and SQLite.
We're going to write some tests for it.

Getting Started

  • Clone this repo

Prerequisites

You will need Python(I have 3.7 on my machine, but 3.5+ will work), also pip for installation packages.

Installing

  • If you don't have virtualenv, you should install it.
pip install virtualenv
  • Create a virtual environment
python -m venv name_of_your_virtual_env
  • Activate it
source name_of_your_virtual_env/bin/activate
  • Add to the environment variable PYTHONPATH to direcrory with cloned repo:
export PYTHONPATH="${PYTHONPATH:+/Path/to/this/repo/pytest-aug2019}"
  • Set the config environment variable:
export APP_SETTINGS=config.py
  • Install required libs in your virtual environment:
pip install -r requirements.txt

Running the tests

  • Go to application folder:
cd application
  • Run tests all the tests:
pytest

Break down into end to end tests

  • e2e tests should be placed in application/tests/tests_e2e.py
  • Tests with mocked database should be placed in application/tests/tests_db_mocked.py

Plan for a workshop

  • Create a test folder and a file contftest.py. We will need to put some fixtures there.
  • Create a fixture for a test client. On a set up it should create a db and start client application, on a teardown it should drop the database.
  • We can set scope this feature to a module.
  • Now create a test file and a test case for a creation a task with a particular text and date. Parametrise it.
  • Create a test case for getting task by id (positive and negative). Try to make it one test case using parametrisation. (Hint) We also can use pytest.raise in parameters.
  • Create a test case that we’ll now will fail and mark it as an xfail
  • (We can create more of them just to get a grip)
  • We kinda finished with e2e test, now we can start with mock part. Create a folder with tests with mocks. It will need a separate conftest.py
  • Create a test client with mocked db part.
  • Create a test case for inserting task using this client
  • Create a test case for getting list of tasks using this client
  • Let’s mark e2e test cases as e2e and run them separately
  • In main conftest.py create a flag for e2e tests.
  • Mark e2e tests with decorator for this flag.

Acknowledgments

  • Hat tip to anyone whose code was used
  • Inspiration
  • etc