test_bug1406102.html

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  <title>Test for Bug 1406102</title>

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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1406102">Mozilla Bug 1406102</a>

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<pre id="test">

<script type="application/javascript">

  let observer = new IntersectionObserver(function (changes) {

    ok(changes[0].intersectionRatio >= 0,

       'intersectionRatio should be equal to or greater than zero');

    if (changes[0].intersectionRatio > 0) {

      SimpleTest.finish();

});

  observer.observe(document.body);

  SimpleTest.waitForExplicitFinish();

</script>

</pre>

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