<!DOCTYPE html>
<title>elementFromPoint(...) on &lt;rect>s</title>
<link rel="help" href="https://svgwg.org/svg2-draft/interact.html#hit-testing">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<svg id="svg" width="420" height="300">
  <rect id="border" x="0.5" y="0.5" width="419" height="299" stroke="#000" stroke-width="1" fill="none"/>

  <rect id="rect1" x="40" y="30" width="20" height="20"/>
</svg>
<script>
// Points are relative to the client rect of the <svg> root.
const tests = [
  // Points on the edge.
  { x: 50, y: 30, expectedElemId: "rect1" },
  { x: 60, y: 40, expectedElemId: "rect1" },
  { x: 50, y: 50, expectedElemId: "rect1" },
  { x: 40, y: 40, expectedElemId: "rect1" },
];

setup(() => {
  const svg = document.getElementById("svg");
  const svgBounds = svg.getBoundingClientRect();
  window.svgOrigin = {
    x: svgBounds.left << 0,
    y: svgBounds.top << 0,
  };
});

tests.forEach(testcase => {
  test(t => {
    const expectedElem = document.getElementById(testcase.expectedElemId);
    const hitElem = document.elementFromPoint(svgOrigin.x + testcase.x, svgOrigin.y + testcase.y);
    assert_equals(hitElem, expectedElem);
  }, `${document.title}, element at (${testcase.x}, ${testcase.y})`);
});
</script>
