Adding support for setting X-Watson-Learning-Opt-Out on TextToSpeech.synthesize

Fixes watson-developer-cloud#226

Author: nfriedly

services/text_to_speech/v1.js

@@ -28,10 +28,7 @@ var requestFactory = require('../../lib/requestwrapper');
 function TextToSpeech(options) {
   // Default URL
   var serviceDefaults = {
-    url: 'https://stream.watsonplatform.net/text-to-speech/api',
-    headers: {
-      'content-type': 'application/json'
-    }
+    url: 'https://stream.watsonplatform.net/text-to-speech/api'
   };
 
   // Replace default options with user provided
@@ -40,6 +37,13 @@ function TextToSpeech(options) {
 
 /**
  * Streaming speech synthesis of the text in a query parameter
+ *
+ * @param {Object} options
+ * @param {String} options.text
+ * @param {String} [options.voice]
+ * @param {String} [options.accept]
+ * @param {Boolean} [options.X-Watson-Learning-Opt-Out]
+ * @param {Function} callback
  */
 TextToSpeech.prototype.synthesize = function(params, callback) {
   params = extend({accept:'audio/ogg; codecs=opus'}, params);
@@ -54,9 +58,9 @@ TextToSpeech.prototype.synthesize = function(params, callback) {
       url: '/v1/synthesize',
       body: JSON.stringify(pick(params, ['text'])),
       qs: pick(params, ['accept', 'voice']),
-      headers: {
+      headers: extend({
         'content-type': 'application/json'
-      },
+      }, pick(params, ['X-Watson-Learning-Opt-Out'])),
       encoding: null
     },
     defaultOptions: this._options

test/test.text_to_speech.v1.js

@@ -94,6 +94,12 @@ describe('text_to_speech', function() {
       assert.equal(req.headers['content-type'], 'application/json');
     });
 
+    it('should support the X-Watson-Learning-Opt-Out option', function() {
+      var params = {'X-Watson-Learning-Opt-Out': true, text: 'test'};
+      var req = text_to_speech.synthesize(params, noop);
+      assert.equal(req.headers['X-Watson-Learning-Opt-Out'], '1');
+    });
+
   });
 
   describe('voices()', function(){