import { nextTestSetup } from 'e2e-utils' describe('css-media-query', () => { const { next } = nextTestSetup({ files: __dirname, }) it('should preserve max-width media query syntax instead of transpiling to range syntax', async () => { const browser = await next.browser('/') // Get all stylesheets from the document const stylesheetContents = await browser.eval(() => { const stylesheets = Array.from(document.styleSheets) const contents: string[] = [] for (const stylesheet of stylesheets) { try { // Only check stylesheets that have cssRules (not external ones we can't access) if (stylesheet.cssRules) { const rules = Array.from(stylesheet.cssRules) for (const rule of rules) { contents.push(rule.cssText) } } } catch (e) { // Skip stylesheets we can't access due to CORS continue } } return contents }) // Find the media query rule const mediaQueryRule = stylesheetContents.find( (rule) => rule.includes('@media') && rule.includes('max-width') ) expect(mediaQueryRule).toBeDefined() // Verify that the media query uses the original max-width syntax // and not the newer range syntax (width <= 768px) expect(mediaQueryRule).toContain('max-width: 768px') expect(mediaQueryRule).not.toContain('width <= 768px') expect(mediaQueryRule).not.toContain('width<=768px') // Also verify the rule contains our expected styles (CSS may convert blue to rgb format) expect(mediaQueryRule).toMatch(/color:\s*(blue|rgb\(0,\s*0,\s*255\))/) }) it('should apply the correct styles based on media query', async () => { const browser = await next.browser('/') // Check that the h1 element exists const h1Text = await browser.elementByCss('h1').text() expect(h1Text).toBe('CSS Media Query Test') // Get the computed color (should be red by default, blue on small screens) const defaultColor = await browser.eval(() => { const h1 = document.querySelector('h1') return window.getComputedStyle(h1!).color }) // The exact color values may vary by browser, but we can check that styles are applied expect(defaultColor).toBeDefined() }) })