Test if alternative stylesheet is blocking scripts

描述

<link rel="alternate stylesheet" title="x" href="foo.css?pipe=trickle(d2)">
<script>
assert_equals(document.querySelector('link').sheet.cssRules[0].zIndex, 10);
</script>

贡献者指南

技术栈

htmlcssjavascript

领域

testing

议题类型

test

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

2

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

under 1 hour

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

clear

前置要求

web platform tests setupHTML spec knowledge

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

70

研究方向

Create a test file in the wpt repository (likely under html/semantics/scripting 1/) that verifies that an alternate stylesheet does not block script execution. Use the provided HTML snippet with a trickle delay on the stylesheet and an assertion that the script runs before the stylesheet loads. Refer to the linked PR #4828 and the spec section on interactions of styling and scripting for guidance. Ensure the test follows testharness.js conventions and check for existing similar tests.