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()
})
})