chrome/test/data/extensions/api_test/events/background.js

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 chrome.test.runTests([
   6   // Tests that attaching a named event twice will fail.
   7   function doubleAttach() {
   8     function dummy() {};
   9     var onClicked = new chrome.Event("browserAction.onClicked");
  10     var onClicked2 = new chrome.Event("browserAction.onClicked");
  11     onClicked.addListener(dummy);
  12     chrome.test.assertTrue(onClicked.hasListeners());
  13     try {
  14       onClicked2.addListener(dummy);
  15       chrome.test.fail();
  16     } catch (e) {
  17       chrome.test.assertTrue(
  18           e.message.search("already attached") >= 0,
  19           e.message);
  20     }
  21     chrome.test.assertFalse(onClicked2.hasListeners());
  22     onClicked2.removeListener(dummy);
  23
  24     onClicked.removeListener(dummy);
  25     chrome.test.assertFalse(onClicked.hasListeners());
  26     chrome.test.succeed();
  27   },
  28
  29   // Tests that 2 pages attaching to the same event does not trigger a DCHECK.
  30   function twoPageAttach() {
  31     // Test harness should already have opened tab.html, which registers this
  32     // listener.
  33     chrome.browserAction.onClicked.addListener(function() {});
  34
  35     // Test continues in twoPageAttach.html.
  36     window.open("twoPageAttach.html");
  37   },
  38 ]);