How can I add unit tests for the Notes app’s find-and-replace feature?

[dailker]

How can I add unit tests for the Notes app’s find-and-replace feature?

[Ziqian-Huang0607]

To add tests:
1. Open tests/notes.test.js or create it.
2. Write a test using Jest:
javascript<br>import { render, fireEvent } from '@testing-library/react';<br>test('find and replace updates text', () => {<br> const { getByTestId } = render(<NotesApp />);<br> fireEvent.change(getByTestId('find-input'), { target: { value: 'test' } });<br> fireEvent.click(getByTestId('replace-button'));<br> expect(getByTestId('editor')).toHaveTextContent('replaced');<br>});<br>
3. Mock AuthContext if needed (see recent tests commit).
4. Run npm test.
5. Submit a pull request.