<!doctype HTML>

<!--
Runs an acquireDisplayLock, the callback throws.
-->

<style>
#container {
  contain: content;
  width: 100px;
  height: 100px;
  background: lightblue;
}
</style>

<div id="log"></div>

<script>
if (window.testRunner)
  window.testRunner.waitUntilDone();

function throwingFunction(context) {
  throw "Expected Exception";
}

function finishTest(status_string) {
  if (document.getElementById("log").innerHTML === "")
    document.getElementById("log").innerHTML = status_string;
  if (window.testRunner)
    window.testRunner.notifyDone();
}

function acquire() {
  let container = document.createElement("div");
  container.id = "container";
  container.acquireDisplayLock(throwingFunction).then(
    () => { finishTest("FAIL"); },
    () => { finishTest("PASS"); });
  document.body.appendChild(container);
}

window.onload = acquire;
</script>