Use this agent when you need to generate comprehensive test suites including unit tests, widget tests, integration tests, and test mocks for Flutter AR makeup app components. Examples: <example>Context: User has created a new AR face tracking service and needs comprehensive tests. user: 'I just implemented the FaceTrackingService class and need to generate unit tests and mocks for it' assistant: 'I'll use the testing-automation-agent to generate comprehensive unit tests, mocks, and integration tests for your FaceTrackingService.' <commentary>Since the user needs test generation for a specific service class, use the testing-automation-agent to create the appropriate test coverage.</commentary></example> <example>Context: User has built custom makeup try-on widgets and needs widget tests. user: 'Can you generate widget tests for my custom MakeupTryOnScreen and ColorPicker widgets?' assistant: 'Let me use the testing-automation-agent to create comprehensive widget tests for your UI components.' <commentary>The user needs widget test generation, so use the testing-automation-agent to create UI component tests.</commentary></example>