<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="../../../resources/js-test-pre.js"></script>
<title></title>
</head>
<body>
<p id="description"></p>
<div id="console"></div>
<script>

function runTest() {
    window.observer = new MutationObserver(function(mutations) { });
    shouldThrowErrorName('observer.observe()', 'TypeError');
    shouldThrowErrorName('observer.observe(null)', 'TypeError');
    shouldThrowErrorName('observer.observe(undefined)', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body)', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, null)', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, undefined)', 'TypeError');
    shouldThrowErrorName('observer.observe(null, {attributes: true})', 'TypeError');
    shouldThrowErrorName('observer.observe(undefined, {attributes: true})', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, {subtree: true})', 'TypeError');
    shouldNotThrow('observer.observe(document.body, {childList: true, attributeOldValue: true})');
    shouldNotThrow('observer.observe(document.body, {attributes: true, characterDataOldValue: true})');
    shouldNotThrow('observer.observe(document.body, {characterData: true, attributeFilter: ["id"]})');

    shouldThrowErrorName('observer.observe(document.body, {attributes: false, attributeOldValue: true})', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, {attributes: false, attributeFilter: ["id"]})', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, {characterData: false, characterDataOldValue: true})', 'TypeError');

    shouldThrowErrorName('observer.observe(document.body, {attributeFilter: 1})', 'TypeError');
    shouldThrowErrorName('observer.observe(document.body, {attributeFilter: "abc"})', 'TypeError');
    shouldNotThrow('x = { [Symbol.iterator]: function* () { yield "foo"; } }; observer.observe(document.body, {attributeFilter: x})');
    shouldThrowErrorName('x = { [Symbol.iterator]: 1 }; observer.observe(document.body, {attributeFilter: x})', 'TypeError');
    shouldThrowErrorName('x = { [Symbol.iterator]: null }; observer.observe(document.body, {attributeFilter: x})', 'TypeError');
    shouldThrowErrorName('x = { [Symbol.iterator]: function* () { throw {name: "error", toString: () => "error"}; } }; '
        + 'observer.observe(document.body, {attributeFilter: x})', 'error');
}

description('Test that WebKitMutationObserver.observe throws exceptions appropriately');

runTest();
</script>
<script src="../../../resources/js-test-post.js"></script>
</body>
</html>