client-rect.html - mozsearch

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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/client-rect.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>

pre, #log {

  position: absolute;

  top: 0;

  left: 200px;

iframe {

  width: 180px;

  height: 100px;

</style>

<iframe id="iframe" srcdoc="<div id='target' style='margin:0.5px;width:1000px;height:1000px;'></div>"></iframe>

<script>

var target;

var entries = [];

var observer;

var iframe = document.getElementById("iframe");

iframe.onload = function() {

  runTestCycle(function() {

    target = iframe.contentDocument.getElementById("target");

    assert_true(!!target, "Target element exists.");

    observer = new IntersectionObserver(function(changes) {

      entries = entries.concat(changes);

});

    observer.observe(target);

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

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

    runTestCycle(test0, "First rAF should generate notification.");

  }, "IntersectionObserverEntry.boundingClientRect should match target.boundingClientRect()");

};

function test0() {

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

  var bcr = target.getBoundingClientRect();

  checkLastEntry(entries, 0, [bcr.left, bcr.right, bcr.top, bcr.bottom]);

</script>