File: getComputedStyle-layout-dependent-removed-ib-sibling.html

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<!doctype html>
<title>getComputedStyle() returns the right style for layout-dependent properties for nodes that have had an IB sibling removed</title>
<link rel="help" href="https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1585882">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style>
  div {
    width: 100%;
  }
</style>
<span>
  <div></div>
  <div></div>
</span>
<script>
test(() => {
  let first = document.querySelector("div");
  let second = document.querySelector("div + div");

  let oldWidth = getComputedStyle(second).width;
  assert_true(oldWidth.indexOf("px") !== -1, "Should return the used value for width");

  first.remove();

  assert_equals(getComputedStyle(second).width, oldWidth, "Should return the used value for width (after sibling removal)");
}, "getComputedStyle() should return the correct used value for nodes that have had an IB-split sibling removed");
</script>