<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
  <title>checkIntersection()</title>
  <h:link rel="help" href="https://w3c.github.io/svgwg/svg2-draft/struct.html#__svg__SVGSVGElement__checkIntersection"/>
  <h:script src="/resources/testharness.js"/>
  <h:script src="/resources/testharnessreport.js"/>

  <g id="g_outer">
    <g id="g_inner_top">
      <rect id="r_top_left" width="50" height="50"/>
      <rect x="50" width="50" height="50"/>
    </g>
    <g transform="translate(0, 50)">
      <rect width="50" height="50"/>
      <rect x="50" width="50" height="50"/>
    </g>
  </g>
  <script>
    function makeRect(x, y, width, height) {
      const svg = document.documentElement;
      return Object.assign(svg.createSVGRect(), {x, y, width, height});
    }
    test(t => {
      [
        { element: 'r_top_left', rect: [10, 10, 10, 10], expected: true },
        { element: 'r_top_left', rect: [10, 10, 80, 10], expected: true },
        { element: 'r_top_left', rect: [60, 10, 10, 10], expected: false },
        { element: 'g_inner_top', rect: [10, 10, 80, 10], expected: true },
        { element: 'g_inner_top', rect: [60, 10, 10, 10], expected: false },
        { element: 'g_outer', rect: [10, 10, 80, 10], expected: false },
        { element: 'g_outer', rect: [10, 10, 80, 80], expected: true },
      ].forEach(testcase => {
        const element = document.getElementById(testcase.element);
        const rect = makeRect(...testcase.rect);
        const svg = document.documentElement;
        assert_equals(svg.checkIntersection(element, rect), testcase.expected,
                      `${document.title}, element ${testcase.element} rect ${testcase.rect}`);
      });
    });
  </script>
</svg>