File: clip-path-path-with-zoom-hittest.html

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<!DOCTYPE html>
<title>CSS Masking: Test clip-path property hit-testing when the page is zoomed</title>
<link rel="author" title="Noam Rosenthal" href="mailto:noam@webkit.org">
<link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-path">
<meta name="assert" content="The zoomed path is hit-tested correctly">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  #triangle {
    width: 100px;
    height: 100px;
    background-color: green;
    clip-path: path(nonzero, 'M0,0 L100,0  L0,100  L0,0');
    zoom: 2;
  }
</style>
<div id="triangle"></div>
<script>
  test(() => {
    assert_equals(document.elementFromPoint(20, 20).id, 'triangle')
    assert_equals(document.elementFromPoint(150, 20).id, 'triangle')
    assert_equals(document.elementFromPoint(180, 180).tagName, 'BODY')
  }, 'clip-path: path() hit-test takes zoom into account');

</script>