<!DOCTYPE html>
<script src="../resources/js-test.js"></script>
<script src="helper-functions.js"></script>
<div style="width:100%; height:700px;"></div>
<div style="white-space: nowrap;">
  <div style="display: inline-block; width: 1000px; height: 100px"></div>
  <div id="target" style="display: inline-block; background-color: green; width:100px; height:100px"></div>
  <div style="display: inline-block; width: 1000px; height: 100px"></div>
</div>
<div style="width:100%; height:700px;"></div>

<script>
  description("Intersection observer test with root margin and implicit root.");
  var target = document.getElementById("target");
  var entries = [];

  function observer_callback(changes) {
    for (var i in changes)
      entries.push(changes[i]);
  }

  var observer = new IntersectionObserver(observer_callback, {
    rootMargin: "10px 20% 40% 30px"
  });
  observer.observe(target);

  function step0() {
    setTimeout(function() {
      shouldThrow("new IntersectionObserver(observer_callback, { rootMargin: '1' })");
      shouldThrow("new IntersectionObserver(observer_callback, { rootMargin: '1em' })");
      shouldThrow("new IntersectionObserver(observer_callback, { rootMargin: 'auto' })");
      shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px' })");
      shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px' })");
      shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px 3%' })");
      shouldNotThrow("new IntersectionObserver(observer_callback, { rootMargin: '1.4px 2px 3% 40px junk junk junk' })");
      shouldBeEqualToNumber("entries.length", 0);
      document.scrollingElement.scrollLeft = 100;
      requestAnimationFrame(step1);
    });
  }

  function step1() {
    setTimeout(function() {
      shouldBeEqualToNumber("entries.length", 1);
      shouldBeEqualToNumber("entries[0].boundingClientRect.left", 912);
      shouldBeEqualToNumber("entries[0].boundingClientRect.right", 1012);
      shouldBeEqualToNumber("entries[0].boundingClientRect.top", 708);
      shouldBeEqualToNumber("entries[0].boundingClientRect.bottom", 808);
      shouldBeEqualToNumber("entries[0].intersectionRect.left", 912);
      shouldBeEqualToNumber("entries[0].intersectionRect.right", 942);
      shouldBeEqualToNumber("entries[0].intersectionRect.top", 708);
      shouldBeEqualToNumber("entries[0].intersectionRect.bottom", 808);
      shouldBeEqualToNumber("entries[0].rootBounds.left", -30);
      shouldBeEqualToNumber("entries[0].rootBounds.right", 942);
      shouldBeEqualToNumber("entries[0].rootBounds.top", -10);
      shouldBeEqualToNumber("entries[0].rootBounds.bottom", 819);
      shouldEvaluateToSameObject("entries[0].target", target);
      document.scrollingElement.scrollTop = 800;
      requestAnimationFrame(step2);
    });
  }

  function step2() {
    setTimeout(function() {
      shouldBeEqualToNumber("entries.length", 1);
      document.scrollingElement.scrollTop = 900;
      requestAnimationFrame(step3);
    });
  }

  function step3() {
    setTimeout(function() {
      shouldBeEqualToNumber("entries.length", 2);
      shouldBeEqualToNumber("entries[1].boundingClientRect.left", 912);
      shouldBeEqualToNumber("entries[1].boundingClientRect.right", 1012);
      shouldBeEqualToNumber("entries[1].boundingClientRect.top", -192);
      shouldBeEqualToNumber("entries[1].boundingClientRect.bottom", -92);
      shouldBeEqualToNumber("entries[1].intersectionRect.left", 0);
      shouldBeEqualToNumber("entries[1].intersectionRect.right", 0);
      shouldBeEqualToNumber("entries[1].intersectionRect.top", 0);
      shouldBeEqualToNumber("entries[1].intersectionRect.bottom", 0);
      shouldBeEqualToNumber("entries[1].rootBounds.left", -30);
      shouldBeEqualToNumber("entries[1].rootBounds.right", 942);
      shouldBeEqualToNumber("entries[1].rootBounds.top", -10);
      shouldBeEqualToNumber("entries[1].rootBounds.bottom", 819);
      shouldEvaluateToSameObject("entries[1].target", target);

      finishTest();
      document.scrollingElement.scrollLeft = 0;
      document.scrollingElement.scrollTop = 0;
    });
  }

  step0();
</script>