Flutter Testing

Test observable behavior at the cheapest layer that provides confidence.

Choose the layer

• Unit tests: pure logic, state transitions, repositories, parsing, and failure policy.
• Widget tests: rendering, semantics, interaction, focus, navigation wiring, and state-to-UI behavior.
• Golden tests: stable visual contracts where platform/font control makes comparison meaningful.
• Integration tests: critical flows, plugin integration, performance, and behavior requiring a real target.

Do not replace behavior assertions with implementation details such as private method calls or exact widget-tree shape.

Reliability