[Bug]: `html:has(> body)` and `:scope > body` on the `<html>` element match nothing

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#43,987 3 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
76/100
Tipo de issue
Error
Claridad
Bien especificado
Estado de actividad
Activo
Stack tecnológico
playwright, typescript
Área
backend, testing-qa

Línea de trabajo

Start in packages/injected/src/selectorEvaluator.ts, especially _matchesSimple and _expandContextForScopeMatching, which the issue identifies as the failing path. Compare the behavior for the root element with the included reproduction and native querySelectorAll. Done means the three reported locators match one element, with regression coverage for root :scope matching.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

Version

1.65.0 (also 1.66.0-alpha-1793916328000)

Steps to reproduce
  1. Clone https://github.com/trackoor/playwright-css-has-root-repro
  2. npm install && npx playwright install chromium
  3. npm test

The test:

import { test, expect } from '@playwright/test';

test(':has(> ...) and :scope > ... on the <html> element', async ({ page }) => {
  await page.setContent('<body class="dark"><div><p>x</p></div></body>');

  // native querySelectorAll finds 1 for each of these
  expect(await page.evaluate(() => document.querySelectorAll('html:has(> body)').length)).toBe(1);

  await expect(page.locator('html:has(> body)')).toHaveCount(1);
  await expect(page.locator(':root:has(> body)')).toHaveCount(1);
  await expect(page.locator('html').locator(':scope > body')).toHaveCount(1);
});
Expected behavior

All three locators find the one element, like document.querySelectorAll does for the same selectors.

Actual behavior

All three return 0 elements:

Error: expect(locator).toHaveCount(expected) failed
Locator:  locator('html:has(> body)')
Expected: 1
Received: 0

html:has(body) and div:has(> p) work, so only :scope matching on the root element is affected.

Additional context

In packages/injected/src/selectorEvaluator.ts, _matchesSimple refuses element === context.scope and relies on _expandContextForScopeMatching to widen the scope to the parent. For <html>, parentElementOrShadowHost() returns null, so the context is returned unchanged and <html> can never match as :scope. Same code on main at 07c7069.

Environment
System:
  OS: Linux (x64)
Binaries:
  Node: 26.13.0
npmPackages:
  @playwright/test: 1.65.0

Credit: https://ucsbplse.github.io/

Lenguaje dominante
TypeScript
Estrellas
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Forks
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Merge medio
17 h 6 min
PR fusionados (30 d)
306

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