third_party/web_platform_tests/WebIDL/ecmascript-binding/es-exceptions/exceptions.html

<!doctype html>
<meta charset=utf-8>
<title>DOMException-throwing tests</title>
<link rel=author title="Aryeh Gregor" href=ayg@aryeh.name>
<div id=log></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
/**
 * This file just picks one case where browsers are supposed to throw an
 * exception, and tests the heck out of whether it meets the spec.  In the
 * future, all these checks should be in assert_throws(), but we don't want
 * every browser failing every assert_throws() check until they fix every
 * single bug in their exception-throwing.
 *
 * We don't go out of our way to test everything that's already tested by
 * interfaces.html, like whether all constants are present on the object, but
 * some things are duplicated.
 */
setup({explicit_done: true});

function testException(exception, global, desc) {
  test(function() {
    assert_equals(global.Object.getPrototypeOf(exception),
                  global.DOMException.prototype);
  }, desc + "Object.getPrototypeOf(exception) === DOMException.prototype");


  test(function() {
    assert_false(exception.hasOwnProperty("name"));
  }, desc + "exception.hasOwnProperty(\"name\")");
  test(function() {
    assert_false(exception.hasOwnProperty("message"));
  }, desc + "exception.hasOwnProperty(\"message\")");

  test(function() {
    assert_equals(exception.name, "HierarchyRequestError");
  }, desc + "exception.name === \"HierarchyRequestError\"");

  test(function() {
    assert_equals(exception.code, global.DOMException.HIERARCHY_REQUEST_ERR);
  }, desc + "exception.code === DOMException.HIERARCHY_REQUEST_ERR");

  test(function() {
    assert_equals(global.Object.prototype.toString.call(exception),
                  "[object DOMException]");
  }, desc + "Object.prototype.toString.call(exception) === \"[object DOMException]\"");
}


// Test in current window
var exception = null;
try {
  // This should throw a HierarchyRequestError in every browser since the
  // Stone Age, so we're really only testing exception-throwing details.
  document.documentElement.appendChild(document);
} catch(e) {
  exception = e;
}
testException(exception, window, "");

// Test in iframe
var iframe = document.createElement("iframe");
iframe.src = "about:blank";
iframe.onload = function() {
  var exception = null;
  try {
    iframe.contentDocument.documentElement.appendChild(iframe.contentDocument);
  } catch(e) {
    exception = e;
  }
  testException(exception, iframe.contentWindow, "In iframe: ");

  document.body.removeChild(iframe);
  done();
};
document.body.appendChild(iframe);
</script>