File: content-visibility-resize-observer-no-error.html

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<!doctype html>
<meta charset="utf8">
<title>Content Visibility: resize observer interaction</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<link rel="match" href="content-visibility-resize-observer-no-error-ref.html">
<meta name="assert" content="the test doesn't cause resize observer to produce an error">

<script>
addEventListener('error', () => {
  document.documentElement.style.background = "red";
});
</script>

<style>
div {
  contain-intrinsic-size: auto 200px;
  content-visibility: auto;
  min-height: 50px;
  background: blue;
}
</style>

<span>There should be no red color on this page.</span>
<span><div></div></span>
<div></div>

<script>
new ResizeObserver(() => {});
</script>