<!-- Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/ -->
<!doctype html>

<html>
<head>
<meta charset="utf-8"/>
<title>Debugger test page</title>
</head>

<body>
<button id="start" onclick="myFunction()">start ac</button>
<button id="suspend" onclick="suspendAC()">suspend ac</button>
<button id="break" onclick="debuggerStatement()">break</button>
<button id="check" onclick="checkACState()">check ac state</button>
<script type="text/javascript">
var ac = null;
async function suspendAC() {
  await ac.suspend();
}

function debuggerStatement() {
  debugger;
}

function checkACState() {
  if (ac.state != "suspended") {
    throw "AudioContext should be suspended.";
  }
}

async function myFunction() {
  await new Promise((resolve) => {
    ac = new AudioContext();
    function statechange_suspend() {
      ac.onstatechange = statechange_fail;
    }
    function statechange_fail() {
      throw "No state change should occur when paused in the debugger.";
    }
    ac.onstatechange = function() {
      ac.onstatechange = statechange_suspend;
      resolve();
    }
  });
}
</script>
</body>
</html>
