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import React from 'react';
import '@testing-library/jest-dom';
import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import { describe, it, expect, vi, beforeEach } from 'vitest';
import FeedItem from './FeedItem';
import type { Item } from '../types';
const mockItem: Item = {
_id: 1,
feed_id: 101,
title: 'Test Item',
url: 'http://example.com/item',
description: '<p>Description</p>',
publish_date: '2023-01-01',
read: false,
starred: false,
feed_title: 'Test Feed'
};
describe('FeedItem Component', () => {
beforeEach(() => {
vi.resetAllMocks();
global.fetch = vi.fn();
});
it('renders item details', () => {
render(<FeedItem item={mockItem} />);
expect(screen.getByText('Test Item')).toBeInTheDocument();
expect(screen.getByText(/Test Feed/)).toBeInTheDocument();
// Check for relative time or date formatting? For now just check it renders
});
it('toggles read status', async () => {
(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) });
render(<FeedItem item={mockItem} />);
const readBtn = screen.getByTitle('Mark as read');
fireEvent.click(readBtn);
// Optimistic update
expect(await screen.findByTitle('Mark as unread')).toBeInTheDocument();
expect(global.fetch).toHaveBeenCalledWith('/api/item/1', expect.objectContaining({
method: 'PUT',
body: JSON.stringify({
_id: 1,
read: true,
starred: false
})
}));
});
it('toggles star status', async () => {
(global.fetch as any).mockResolvedValueOnce({ ok: true, json: async () => ({}) });
render(<FeedItem item={mockItem} />);
const starBtn = screen.getByTitle('Star');
fireEvent.click(starBtn);
// Optimistic update
expect(await screen.findByTitle('Unstar')).toBeInTheDocument();
expect(global.fetch).toHaveBeenCalledWith('/api/item/1', expect.objectContaining({
method: 'PUT',
body: JSON.stringify({
_id: 1,
read: false,
starred: true
})
}));
});
it('reverts optimistic update on failure', async () => {
(global.fetch as any).mockRejectedValueOnce(new Error('API Error'));
const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => { });
render(<FeedItem item={mockItem} />);
const readBtn = screen.getByTitle('Mark as read');
fireEvent.click(readBtn);
// Should revert to unread
await waitFor(() => {
expect(screen.getByTitle('Mark as read')).toBeInTheDocument();
});
consoleSpy.mockRestore();
});
});
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