testing/web-platform/tests/css/css-transforms/transform-origin-in-shadow.html


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<!DOCTYPE html>
<title>'transform-origin' on &lt;svg> being direct descendant of shadow root</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-origin-property">
<template>
  <style>
    #target {
      height: 100px;
      width: 100px;
      background-color: green;
      transform: rotate(90deg);
    }
  </style>
  <svg id="target"></svg>
</template>
<div style="position: relative; height: 100px">
  <div style="width: 100px; height: 100px; background-color: red; position: absolute"></div>
  <div style="position: absolute" id="wrapper"></div>
</div>
<script>
setup(function() {
  const wrapper = document.querySelector('#wrapper');
  wrapper.attachShadow({mode: "open"});
  wrapper.shadowRoot.appendChild(
    document.querySelector("template").content.cloneNode(true));
});

test(function() {
  const wrapper = document.querySelector('#wrapper');
  const target = wrapper.shadowRoot.getElementById('target');
  assert_equals(getComputedStyle(target, null).transformOrigin, '50px 50px');
});
</script>