src/chrome/test/data/extensions/api_test/tts_engine/engine_word_callbacks/test.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 // TTS api test for Chrome on ChromeOS.
   6 // browser_tests.exe --gtest_filter="TtsApiTest.*"
   7
   8 chrome.test.runTests([
   9   function testWordCallbacks() {
  10     // Register listeners for speech functions, enabling this extension
  11     // to be a TTS engine.
  12     var speakListener = function(utterance, options, sendTtsEvent) {
  13       chrome.test.assertNoLastError();
  14       chrome.test.assertEq('alpha beta gamma', utterance);
  15       sendTtsEvent({'type': 'word', 'charIndex': 0});
  16       sendTtsEvent({'type': 'word', 'charIndex': 6});
  17       sendTtsEvent({'type': 'word', 'charIndex': 11});
  18       sendTtsEvent({'type': 'end', 'charIndex': utterance.length});
  19     };
  20     var stopListener = function() {};
  21     chrome.ttsEngine.onSpeak.addListener(speakListener);
  22     chrome.ttsEngine.onStop.addListener(stopListener);
  23
  24     var callbacks = 0;
  25     chrome.tts.speak(
  26         'alpha beta gamma',
  27         {
  28          'onEvent': function(event) {
  29            chrome.test.assertNoLastError();
  30            callbacks++;
  31            switch(callbacks) {
  32            case 1:
  33              chrome.test.assertEq('word', event.type);
  34              chrome.test.assertEq(0, event.charIndex);
  35              break;
  36            case 2:
  37              chrome.test.assertEq('word', event.type);
  38              chrome.test.assertEq(6, event.charIndex);
  39              break;
  40            case 3:
  41              chrome.test.assertEq('word', event.type);
  42              chrome.test.assertEq(11, event.charIndex);
  43              break;
  44            case 4:
  45              chrome.test.assertEq('end', event.type);
  46              chrome.test.assertEq(16, event.charIndex);
  47              chrome.test.succeed();
  48              break;
  49            default:
  50              chrome.test.fail();
  51            }
  52          }
  53         },
  54         function() {
  55           chrome.test.assertNoLastError();
  56         });
  57   }
  58 ]);