<!doctype html>
<title>ResizeObserver for SVG elements with CSS box.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./resources/resizeTestHelper.js"></script>
<div id="container" style="width: 500px; height: 500px;">
<svg id="svg" width="100%" viewBox="0 0 100 100">
  <circle cx="50" cy="50" r="45" style="fill:orange;stroke:black;stroke-width:1" />
  <foreignObject id="foreign" 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>
</svg>
<script>
'use strict';

function test0() {
  let targetWidth = 150;
  let target = document.getElementById('foreign-svg');
  let container = document.getElementById('foreign');
  let helper = new ResizeTestHelper(
    "test0: observe `foreignObject` SVG in HTML document",
  [
    {
      setup: observer => {
        observer.observe(target);
      },
      notify: (entries, observer) => {
        return true; // Delay next step
      }
    },
    {
      setup: observer => {
        target.setAttribute('width', targetWidth);
      },
      notify: entries => {
        assert_equals(entries.length, 1);
        const entry = entries[0];
        assert_equals(entry.target, target);
        assert_equals(entry.contentBoxSize[0].inlineSize, targetWidth);
      },
    }
  ]);
  return helper.start();
}

function test1() {
  let targetWidth = 400;
  let target = document.getElementById('svg');
  let container = document.getElementById('container');
  let helper = new ResizeTestHelper(
    "test1: observe inline SVG in HTML",
  [
    {
      setup: observer => {
        observer.observe(target);
      },
      notify: (entries, observer) => {
        return true; // Delay next step
      }
    },
    {
      setup: observer => {
        target.style.width = targetWidth + 'px';
      },
      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>
