resize-observer/svg-with-css-box-002.svg

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:h="http://www.w3.org/1999/xhtml"
     version="1.1"
     width="100%" height="100%"
     id="root">
<title>ResizeObserver for SVG elements with CSS box.</title>
<h:script src="/resources/testharness.js"/>
<h:script src="/resources/testharnessreport.js"/>
<h:script src="./resources/resizeTestHelper.js"/>

<foreignObject x="0" y="0" width="100" height="100">
  <svg xmlns="http://www.w3.org/2000/svg"
       width="100" height="100"
       viewBox="0 0 100 100"
       id="foreign-svg">
    <circle cx="50" cy="50" r="45" style="fill:orange;stroke:black;stroke-width:1" />
  </svg>
</foreignObject>

<script>
'use strict';

function test0() {
  let targetWidth = 400;
  let target = document.getElementById('root');
  let helper = new ResizeTestHelper(
    "test0: Root SVG resize observed",
  [
    {
      setup: observer => {
        observer.observe(target);
      },
      notify: (entries, observer) => {
        return true; // Delay next step
      }
    },
    {
      setup: observer => {
        target.setAttribute('width', targetWidth);
      },
      notify: (entries, observer) => {
        assert_equals(entries.length, 1);
        const entry = entries[0];
        assert_equals(entry.target, target);
        assert_equals(entry.contentBoxSize[0].inlineSize, targetWidth);
      }
    }
  ]);
  return helper.start(() => {
    target.setAttribute('width', '100%');
  });
}

function test1() {
  let targetWidth = 90;
  let target = document.getElementById('foreign-svg');
  let helper = new ResizeTestHelper(
    "test1: `foreignObject` SVG resize observed",
  [
    {
      setup: observer => {
        observer.observe(target);
      },
      notify: (entries, observer) => {
        return true; // Delay next step
      }
    },
    {
      setup: observer => {
        target.setAttribute('width', targetWidth);
      },
      notify: (entries, observer) => {
        assert_equals(entries.length, 1);
        const entry = entries[0];
        assert_equals(entry.target, target);
        assert_equals(entry.contentBoxSize[0].inlineSize, targetWidth);
      }
    }
  ]);
  return helper.start();
}

let guard;
test(_ => {
  assert_implements(window.ResizeObserver);
  guard = async_test('guard');
}, "ResizeObserver implemented")

test0()
  .then(() => { test1(); })
  .then(() => { guard.done(); });
</script>
</svg>