Implement Unit Tests for UI Components

[GreenWizard2015]

Description:

We need to implement unit tests for the UI components in our Tea System UI project. These tests are crucial to ensure the robustness and reliability of our user interface. The following components should be covered by unit tests:

1. APIAddressField: Test the functionality of updating the API host.
2. CurrentOperationInfoArea: Test the display of the current operation information.
3. HoldToPour: Test the continuous pouring functionality and handle user interactions.
4. NotificationsArea: Test the display and dismissal of notifications.
5. PourTimeField: Test the functionality of updating the pouring time.
6. PowerLevel: Test the functionality of updating the power level.
7. SystemControls: Test the start and stop functionality of the system controls.
8. SystemStatusArea: Test the display of the system status.
9. TimerArea: Test the countdown timer functionality.

Requirements:

• Write unit tests for each component listed above.
• Ensure the tests cover various edge cases and user interactions.
• Use Jest and React Testing Library for implementing the tests.
• Ensure the tests are integrated into the existing test suite and can be run using the npm test command.
• Ensure the tests are integrated into the CI.