Tests: Fix sitemap E2E test

Author: Sidnioulz

code/e2e-tests/sitemap.spec.ts

@@ -1,32 +1,18 @@
-import { gunzipSync } from 'node:zlib';
-
 import { expect, test } from '@playwright/test';
 import process from 'process';
 
 const storybookUrl = process.env.STORYBOOK_URL || 'http://localhost:8001';
 
 test.describe('Sitemap', () => {
-  test.beforeEach(async ({ page }) => {
-    await page.goto(storybookUrl);
-  });
-
   test('should have sitemap.xml with gzipped content', async ({ page }) => {
-    const response = await page.evaluate(async () => {
-      const res = await fetch('/sitemap.xml');
-      const buffer = await res.arrayBuffer();
-      return {
-        status: res.status,
-        contentType: res.headers.get('content-type'),
-        contentEncoding: res.headers.get('content-encoding'),
-        buffer: Array.from(new Uint8Array(buffer)),
-      };
-    });
-
-    expect(response.status).toBe(200);
-    expect(response.contentType).toBe('application/xml');
-    expect(response.contentEncoding).toBe('gzip');
-
-    const decompressed = gunzipSync(Uint8Array.from(response.buffer)).toString('utf-8');
+    const response = await page.goto(`${storybookUrl}/sitemap.xml`);
+
+    expect(response?.status()).toBe(200);
+    expect(response?.headers()['content-type']).toBe('application/xml');
+    expect(response?.headers()['content-encoding']).toBe('gzip');
+
+    const decompressed = (await response?.body())?.toString('utf-8');
+    expect(decompressed).toBeDefined();
 
     expect(decompressed).toContain('<?xml version="1.0" encoding="UTF-8"?>');
     expect(decompressed).toContain('<urlset');