4.3Push Notification Testing

// tests/pwa/push-notifications.spec.ts
import { test, expect } from '@playwright/test';

test.describe('Push Notifications', () => {
    test('requests notification permission on first interaction', async ({ page, context }) => {
        // Grant notification permission
        await context.grantPermissions(['notifications']);

        await page.goto('/');
        await page.click('[data-testid="enable-notifications-btn"]');

        // Verify subscription was created
        const subscription = await page.evaluate(async () => {
            const reg = await navigator.serviceWorker.ready;
            const sub = await reg.pushManager.getSubscription();
            return sub !== null;
        });
        expect(subscription).toBe(true);
    });

    test('displays notification when push event received', async ({ page }) => {
        await page.goto('/');

        // Simulate push via service worker
        const notificationShown = await page.evaluate(async () => {
            const reg = await navigator.serviceWorker.ready;
            await reg.showNotification('Test Order Update', {
                body: 'Your order #123 has shipped',
                icon: '/icons/notification-icon.png',
                actions: [
                    { action: 'view', title: 'View Order' },
                    { action: 'dismiss', title: 'Dismiss' }
                ]
            });
            return true;
        });
        expect(notificationShown).toBe(true);
    });

    test('handles notification permission denial gracefully', async ({ page, context }) => {
        // Deny notification permission
        await context.grantPermissions([]);

        await page.goto('/');

        // The enable button should still be present
        const enableBtn = page.locator('[data-testid="enable-notifications-btn"]');
        await expect(enableBtn).toBeVisible();

        // Clicking it should show a fallback message, not crash
        await enableBtn.click();
        await expect(page.locator('[data-testid="notification-denied-message"]')).toBeVisible();
    });
});