TDD

• https://tddmanifesto.com/getting-started/
• https://tddmanifesto.com/a-clean-test/
• https://tddmanifesto.com/exercises/
• https://online-training.jbrains.ca/p/wbitdd-01
• https://journal.optivem.com/p/tdd-in-legacy-code
• https://app.pluralsight.com/library/courses/test-driven-rails-rspec-capybara-cucumber/table-of-contents

Three Laws of TDD

::

1. No production code unless it is to make a failing test pass.
2. No more of a unit test than is sufficient to fail.
3. No more production code than is sufficient to pass the one failing test.

4 most basic tests we must write

::

1. all happy paths
2. edge/corner/boundary cases
3. negative test cases
4. security and illegal issues