Also known as
The Arrange/Act/Assert (AAA) is a pattern for organizing unit tests. It breaks tests down into three clear and distinct steps: 1. Arrange: Perform the setup and initialization required for the test. 2. Act: Take action(s) required for the test. 3. Assert: Verify the outcome(s) of the test.
Use Arrange/Act/Assert pattern when
- you need to structure your unit tests so they're easier to read, maintain, and enhance.