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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1275835
-->
<head>
  <title>Test registering invalid lifecycle callbacks for custom elements.</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1275835">Bug 1275835</a>
<iframe id="iframe"></iframe>
<script>

// Use window from iframe to isolate the test.
const testWindow = iframe.contentDocument.defaultView;

// This is for backward compatibility.
// We should do the same checks for the callbacks from v0 spec.
[
  'attributeChangedCallback',
].forEach(callback => {
  var c = class {};
  var p = c.prototype;

  // Test getting callback throws exception.
  Object.defineProperty(p, callback, {
    get() {
      const e = new Error('this is rethrown');
      e.name = 'rethrown';
      throw e;
    }
  });

  SimpleTest.doesThrow(() => {
    testWindow.document.registerElement(`test-register-${callback}-rethrown`,
                                        { prototype: p });
  }, `document.registerElement should throw exception if prototype.${callback} throws`);

  SimpleTest.doesThrow(() => {
    testWindow.customElements.define(`test-define-${callback}-rethrown`, c);
  }, `customElements.define should throw exception if constructor.${callback} throws`);

  // Test callback is not callable.
  [
    { name: 'null', value: null },
    { name: 'object', value: {} },
    { name: 'integer', value: 1 },
  ].forEach(data => {
    var c = class {};
    var p = c.prototype;

    p[callback] = data.value;

    SimpleTest.doesThrow(() => {
      testWindow.document.registerElement(`test-register-${callback}-${data.name}`,
                                             { prototype: p });
    }, `document.registerElement should throw exception if ${callback} is ${data.name}`);

    SimpleTest.doesThrow(() => {
      testWindow.customElements.define(`test-define-${callback}-${data.name}`, c);
    }, `customElements.define should throw exception if ${callback} is ${data.name}`);
  });
});

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