chromium/third_party/blink/web_tests/http/tests/asmjs/asm-warnings.html

<html>
<body>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.dumpChildFrames();
    testRunner.setDumpConsoleMessages(true);
    testRunner.waitUntilDone();
}

function ModuleBadAsm() {
  "use asm";
  var x = "hi";
  function foo() {}
  return {bar: foo};
}
ModuleBadAsm();

var w = new Worker('worker.js');
w.onmessage = function(e) {
  testRunner.notifyDone();
};
w.postMessage({name: 'yo'});

</script>
</body>
</html>