Methodology from obra/superpowers (MIT)

Test-Driven Development (TDD)

Iron law: no production code without a preceding failing test.

The RED-GREEN-REFACTOR Cycle

RED -- Write a Failing Test

1. Identify the next smallest behavior to implement.
2. Write a test that asserts that behavior.
3. Run the test suite. Confirm the new test fails for the right reason.
4. If it passes already, your test is not testing new behavior -- rewrite it.

GREEN -- Make It Pass