overflow-clip-margin-hit-testing.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-overflow/overflow-clip-margin-hit-testing.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Overflow: clip hit testing includes overflow in overflow-clip-margin</title>

<link rel="help" href="https://www.w3.org/TR/css-overflow-3/#valdef-overflow-clip">

<link rel="author" title="Scott Violet" href="mailto:wangxianzhu@chromium.org">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<div id="container" style="width: 100px; height: 100px;

                           overflow: clip; overflow-clip-margin: 50px">

  <div id="child" style="width: 300px; height: 50px"></div>

</div>

<script>

test(() => {

  var bounds = container.getBoundingClientRect();

  assert_equals(child, document.elementFromPoint(bounds.x + 50, bounds.y + 20),

                'in child and container');

  assert_equals(child, document.elementFromPoint(bounds.x + 125, bounds.y + 25),

                'in child and container overflow clip margin');

  assert_equals(document.body, document.elementFromPoint(bounds.x + 175, bounds.y + 25),

                'outside of container overflow, would in child without clip');

  assert_equals(container, document.elementFromPoint(bounds.x + 50, bounds.y + 75),

                'outside of child, in container');

  assert_equals(document.documentElement,

                document.elementFromPoint(bounds.x + 50, bounds.y + 125),

                'in container overflow clip margin, but nothing there');

}, "Ensure elements in overflow-clip-margin are returned from elementFromPoint");

</script>