<!DOCTYPE HTML>
<html>
 <head>
  <title>WebStorage Test: StorageEvent - constructor</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
 </head>
 <body>
    <script>
        test(function() {
            assert_throws_js(TypeError, () => new StorageEvent());
            // should be redundant, but .length can be wrong with custom bindings
            assert_equals(StorageEvent.length, 1, 'StorageEvent.length');
        }, 'constructor with no arguments');

        test(function() {
            var event = new StorageEvent('type');
            assert_equals(event.type, 'type', 'type');
            assert_equals(event.key, null, 'key');
            assert_equals(event.oldValue, null, 'oldValue');
            assert_equals(event.newValue, null, 'newValue');
            assert_equals(event.url, '', 'url');
            assert_equals(event.storageArea, null, 'storageArea');
        }, 'constructor with just type argument');

        test(function() {
            assert_not_equals(localStorage, null, 'localStorage'); // precondition

            var event = new StorageEvent('storage', {
                bubbles: true,
                cancelable: true,
                key: 'key',
                oldValue: 'oldValue',
                newValue: 'newValue',
                url: 'url', // not an absolute URL to ensure it isn't resolved
                storageArea: localStorage
            });
            assert_equals(event.type, 'storage', 'type');
            assert_equals(event.bubbles, true, 'bubbles');
            assert_equals(event.cancelable, true, 'cancelable');
            assert_equals(event.key, 'key', 'key');
            assert_equals(event.oldValue, 'oldValue', 'oldValue');
            assert_equals(event.newValue, 'newValue', 'newValue');
            assert_equals(event.url, 'url', 'url');
            assert_equals(event.storageArea, localStorage, 'storageArea');
        }, 'constructor with sensible type argument and members');

        test(function() {
            var event = new StorageEvent(null, {
                key: null,
                oldValue: null,
                newValue: null,
                url: null,
                storageArea: null
            });
            assert_equals(event.type, 'null', 'type');
            assert_equals(event.key, null, 'key');
            assert_equals(event.oldValue, null, 'oldValue');
            assert_equals(event.newValue, null, 'newValue');
            assert_equals(event.url, 'null', 'url');
            assert_equals(event.storageArea, null, 'storageArea');
        }, 'constructor with null type argument and members');

        test(function() {
            var event = new StorageEvent(undefined, {
                key: undefined,
                oldValue: undefined,
                newValue: undefined,
                url: undefined,
                storageArea: undefined
            });
            assert_equals(event.type, 'undefined', 'type');
            assert_equals(event.key, null, 'key');
            assert_equals(event.oldValue, null, 'oldValue');
            assert_equals(event.newValue, null, 'newValue');
            assert_equals(event.url, '', 'url'); // not 'undefined'!
            assert_equals(event.storageArea, null, 'storageArea');
        }, 'constructor with undefined type argument and members');
    </script>
 </body>
</html>