<!DOCTYPE html>
<html>
<head>
<script src="../resources/js-test-pre.js"></script>
</head>
<body>
<iframe id="testFrame" src="resources/no-document-leak-frame.html"></iframe>
<script>
description("Tests that using IntersectionObserver does not cause the document to get leaked.");
window.jsTestIsAsync = true;

function documentShouldDie(documentIdentifier)
{
    return new Promise(function(resolve, reject) {
        handle = setInterval(function() {
            gc();
            if (internals && !internals.isDocumentAlive(documentIdentifier) && internals.numberOfIntersectionObservers(document) == 0) {
                clearInterval(handle);
                resolve();
            }
        }, 10);
    });
}

var testFrame = document.getElementById("testFrame");
testFrame.onload = function() {
    let frameDocumentIdentifier = internals.documentIdentifier(testFrame.contentDocument);
    testFrame.remove();
    setTimeout(function() {
        documentShouldDie(frameDocumentIdentifier).then(function() {
            testPassed("Document did not leak");
            finishJSTest();
        });
    });
};
</script>
<script src="../resources/js-test-post.js"></script>
</body>
</html>