position-relative.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /intersection-observer/v2/position-relative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta name="viewport" content="width=device-width,initial-scale=1">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="../resources/intersection-observer-test-utils.js"></script>

<style>

body, html {

  margin: 0;

pre, #log {

  position: absolute;

  top: 0;

  left: 200px;

.relpos {

  position: relative;

</style>

<div id="target" class="relpos">

  <div class="relpos">

    <img border="0" width="100" height="100" src=""/>

  </div>

</div>

<script>

var delay = 100;

var entries = [];

var target;

runTestCycle(function() {

  target = document.getElementById("target");

  assert_true(!!target, "target exists");

  var observer = new IntersectionObserver(function(changes) {

    entries = entries.concat(changes)

  }, {trackVisibility: true, delay: delay});

  observer.observe(target);

  entries = entries.concat(observer.takeRecords());

  assert_equals(entries.length, 0, "No initial notifications.");

  runTestCycle(step0, "First rAF.", delay);

}, "IntersectionObserverV2 observing a position:relative div containing a position:relative child");

function step0() {

  assert_equals(entries.length, 1, "First notification.");

  assert_true(entries[0].isVisible, "Target is visible.");

</script>