librespeed-mirror/tests/e2e/design-switch.spec.js

const { test, expect } = require('@playwright/test');
const { baseUrls } = require('./helpers/env');
const { classicStartButton, modernStartButton } = require('./helpers/ui');

test.describe('Design switch behavior', () => {
  test('index.html defaults to classic when useNewDesign=false', async ({ page }) => {
    await page.goto(`${baseUrls.standalone}/index.html`);
    await expect(page).toHaveURL(/index-classic\.html/);
    await expect(classicStartButton(page)).toBeVisible();
  });

  test('index.html defaults to modern when useNewDesign=true', async ({ page }) => {
    await page.goto(`${baseUrls.standaloneNew}/index.html`);
    await expect(page).toHaveURL(/index-modern\.html/);
    await expect(modernStartButton(page)).toBeVisible();
  });

  test('query override design=new forces modern', async ({ page }) => {
    await page.goto(`${baseUrls.standalone}/index.html?design=new`);
    await expect(page).toHaveURL(/index-modern\.html\?design=new/);
    await expect(modernStartButton(page)).toBeVisible();
  });

  test('query override design=old forces classic', async ({ page }) => {
    await page.goto(`${baseUrls.standaloneNew}/index.html?design=old`);
    await expect(page).toHaveURL(/index-classic\.html\?design=old/);
    await expect(classicStartButton(page)).toBeVisible();
  });

  test('config fetch bypasses browser cache', async ({ page }) => {
    let configRequestUrl = '';

    await page.route('**/config.json*', async (route) => {
      configRequestUrl = route.request().url();
      await route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ useNewDesign: true }),
      });
    });

    await page.goto(`${baseUrls.standalone}/index.html`);
    await expect(page).toHaveURL(/index-modern\.html/);
    expect(configRequestUrl).toMatch(/config\.json\?_=\d+/);
  });
});