Web API: CustomEvent (#1505)

js/custom_event_test.ts

@@ -0,0 +1,21 @@
+// Copyright 2018 the Deno authors. All rights reserved. MIT license.
+import { test, assertEqual } from "./test_util.ts";
+
+test(function customEventInitializedWithDetail() {
+  const type = "touchstart";
+  const detail = { message: "hello" };
+  const customEventDict = new CustomEventInit({
+    bubbles: true,
+    cancelable: true,
+    detail
+  });
+  const event = new CustomEvent(type, customEventDict);
+
+  assertEqual(event.bubbles, true);
+  assertEqual(event.cancelable, true);
+  assertEqual(event.currentTarget, null);
+  assertEqual(event.detail, detail);
+  assertEqual(event.isTrusted, false);
+  assertEqual(event.target, null);
+  assertEqual(event.type, type);
+});