More ChromeVox tests

chrome/browser/resources/chromeos/chromevox/host/testing/tts.js

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @fileoverview Dummy implementation of TTS for testing.
+ *
+ */
+
+goog.provide('cvox.TestTts');
+
+goog.require('cvox.AbstractTts');
+goog.require('cvox.DomUtil');
+goog.require('cvox.HostFactory');
+
+
+
+/**
+ * @constructor
+ * @extends {cvox.AbstractTts}
+ */
+cvox.TestTts = function() {
+  cvox.AbstractTts.call(this);
+  this.utterances_ = [];
+};
+goog.inherits(cvox.TestTts, cvox.AbstractTts);
+
+
+/**
+ * @type {string}
+ * @private
+ */
+cvox.TestTts.prototype.sentinelText_ = '@@@STOP@@@';
+
+
+/**
+ * @override
+ */
+cvox.TestTts.prototype.speak = function(text, queueMode, opt_properties) {
+  this.utterances_.push({text: text, queueMode: queueMode});
+  if (opt_properties && opt_properties['endCallback'] != undefined) {
+    var len = this.utterances_.length;
+    // 'After' is a sentinel value in the tests that tells TTS to stop and
+    // ends callbacks being called.
+    if (this.utterances_[len - 1].text !=
+        this.sentinelText_) {
+      opt_properties['endCallback']();
+    }
+  }
+};
+
+
+/**
+ * Creates a sentinel element that indicates when TTS should stop and callbacks
+ * should stop being called.
+ * @return {Element} The sentinel element.
+ */
+cvox.TestTts.prototype.createSentinel = function() {
+  var sentinel = document.createElement('div');
+  sentinel.textContent = this.sentinelText_;
+  return sentinel;
+};
+
+
+/**
+ * All calls to tts.speak are saved in an array of utterances.
+ * Clear any utterances that were saved up to this point.
+ */
+cvox.TestTts.prototype.clearUtterances = function() {
+  this.utterances_.length = 0;
+};
+
+/**
+ * Return a string of what was spoken by tts.speak().
+ * @return {string} A single string containing all utterances spoken
+ *     since initialization or the last call to clearUtterances,
+ *     concatenated together with all whitespace collapsed to single
+ *     spaces.
+ */
+cvox.TestTts.prototype.getUtterancesAsString = function() {
+  return cvox.DomUtil.collapseWhitespace(this.getUtteranceList().join(' '));
+};
+
+/**
+ * Return a list of strings of what was spoken by tts.speak().
+ * @return {Array.<string>} A list of all utterances spoken since
+ *     initialization or the last call to clearUtterances.
+ */
+cvox.TestTts.prototype.getUtteranceList = function() {
+  var result = [];
+  for (var i = 0; i < this.utterances_.length; i++) {
+    result.push(this.utterances_[i].text);
+  }
+  return result;
+};
+
+/**
+ * Return a list of strings of what was spoken by tts.speak().
+ * @return {Array.<{text: string, queueMode: number}>}
+ *     A list of info about all utterances spoken since
+ *     initialization or the last call to clearUtterances.
+ */
+cvox.TestTts.prototype.getUtteranceInfoList = function() {
+  return this.utterances_;
+};
+
+/** @override */
+cvox.HostFactory.ttsConstructor = cvox.TestTts;