Add CustomEvent.initCustomEvent test.

tests/html/event_customevent_test.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#library('EventCustomEventTest');
+#import('../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/html_config.dart');
+#import('dart:html');
+
+// TODO(nweiz): Make this private to testEvents when Frog supports closures with

[podivilov, 2012/06/20 11:56:50]

Frog? :)

[Anton Muhin, 2012/06/20 13:18:22]

Copy paste. Hmm, do not know, I'd rather nuke the comment itself.

+// optional arguments.
+eventTest(String name, Event eventFn(), void validate(Event),
+    [String type = 'foo']) {
+  test(name, () {
+    final el = new Element.tag('div');
+    var fired = false;
+    el.on[type].add((ev) {
+      fired = true;
+      validate(ev);
+    });
+    el.on[type].dispatch(eventFn());
+    expect(fired, isTrue, 'Expected event to be dispatched.');
+  });
+}
+
+main() {
+  useHtmlConfiguration();
+
+  eventTest('CustomEvent.initCustomEvent', () {
+    // TODO: switch to constructors later.
+    final ev = document.$dom_createEvent('CustomEvent');
+    ev.initCustomEvent('foo', false, false, 'detail');
+    return ev;
+  },
+  (ev) { expect(ev.detail, equals('detail')); });

[podivilov, 2012/06/20 11:56:50]

nit: =>

[Anton Muhin, 2012/06/20 13:18:22]

Alas, I hate it myself, but => foo() is a bad idea if foo is void and expect is
:(

+}