<!DOCTYPE html><!-- webkit-test-runner [ useFlexibleViewport=true ] -->
<html>
<head>
<title>This tests the case when visible content change happens through transition and the click removes the animated element.</title>
<script src="../../../../../resources/basic-gestures.js"></script>
<style>
#tapthis {
    width: 400px;
    height: 400px;
    border: 1px solid green;
}

#becomesVisible {
    opacity: 0;
    width: 100px;
    height: 100px;
    background-color: green;
    transition: opacity 80ms ease-out 0ms;
}
</style>
<script>
async function test() {
    if (!window.testRunner || !testRunner.runUIScript)
        return;
    if (window.internals)
        internals.settings.setContentChangeObserverEnabled(true);

    testRunner.waitUntilDone();
    testRunner.dumpAsText();

    let rect = tapthis.getBoundingClientRect();
    let x = rect.left + rect.width / 2;
    let y = rect.top + rect.height / 2;

    await tapAtPoint(x, y);
}
</script>
</head>
<body onload="test()">
<div id=tapthis>PASS if no crash or assert.</div>
<div id=becomesVisible></div>
<pre id=result></pre>
<script>
tapthis.addEventListener("mouseover", function( event ) {
    becomesVisible.style.opacity = "1";
    setTimeout(function() {
        document.body.offsetHeight;
    }, 50);
}, false);

tapthis.addEventListener("click", function( event ) {
    becomesVisible.remove();
    document.body.offsetHeight;
    if (window.testRunner)
        testRunner.notifyDone();
}, false);
</script>
</body>
</html>