<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title> CSS Scroll Snap 2 Test: scroll-start interaction with fragment-navigation</title>
  <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#scroll-start">
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
</head>

<body>
  <iframe id="frame" src="scroll-start-with-fragment-navigation-inner-frame.html#fragment_target"
    onload="runTest()"></iframe>
  <script>
    function runTest() {
      test((t) => {
        let scroller = frame.contentDocument.scrollingElement;
        // fragment_target is at the bottom of the frame so the frame should be
        // fully scrolled down to bring it into view.
        let expected_scroll_top = scroller.scrollHeight - scroller.clientHeight;

        assert_equals(frame.contentWindow.location.hash, "#fragment_target");
        assert_not_equals(100, expected_scroll_top);
        assert_equals(frame.contentDocument.scrollingElement.scrollTop,
          expected_scroll_top);
      }, "scroll-start does not override hash fragment navigation");
    }
  </script>
</body>