Added first draft.

gulpfile.js

@@ -45,7 +45,7 @@ gulp.task('test', ['pre-test'], function (cb) {
 
   console.log('Running tests with node version', process.version);
 
-  gulp.src('test/**/*.js')
+  gulp.src('test/**/ssml.js')
     .pipe(plumber())
     .pipe(mocha({ reporter: 'spec' }))
     .on('error', function (err) {

lib/rest/utils.js

@@ -54,3 +54,38 @@ export function camelCaseRequestWrapper(requestFunc) {
   }
 }
 
+export function validateVoiceForSsml(voice, language) {
+
+  var voiceParts = voice.split('.');
+  if (['MAN', 'WOMAN'].indexOf(voice) != -1) {
+    return { success: true };
+  } else if (voiceParts.length != 2 || voiceParts[0] != 'Polly') {
+    return {
+      success: false, msg: "Invalid voice " + voice + '.'
+    };
+  }
+
+  // If voice is polly, validate accent based on language specified
+
+  // List of valid Polly voices
+  var languageWiseVoices = {
+    'Australian English': ['Nicole', 'Russell'],
+    'Brazilian Portuguese': ['Vitória', 'Ricardo']
+  };
+
+  // Validate supported languages.
+  if (!languageWiseVoices[language]) {
+    return {
+      success: false, msg: "Invalid language."
+    };
+  }
+
+  // Validate voice for given language.
+  if (languageWiseVoices[language].indexOf(voiceParts[1]) == -1) {
+    return {
+      success: false, msg: "XML Validation Error: <Speak> voice ‘" + voice + "’ is not valid. Refer <link> for list of supported voices."
+    };
+  }
+
+}
+

lib/utils/exceptions.js

@@ -1,6 +1,7 @@
-export class PlivoRestError extends Error {}
-export class ResourceNotFoundError extends PlivoRestError {}
-export class ServerError extends PlivoRestError {}
-export class InvalidRequestError extends PlivoRestError {}
-export class PlivoXMLError extends PlivoRestError {}
-export class AuthenticationError extends PlivoRestError {}
+export class PlivoRestError extends Error { }
+export class ResourceNotFoundError extends PlivoRestError { }
+export class ServerError extends PlivoRestError { }
+export class InvalidRequestError extends PlivoRestError { }
+export class PlivoXMLError extends PlivoRestError { }
+export class PlivoXMLValidationError extends PlivoRestError { }
+export class AuthenticationError extends PlivoRestError { }

test/ssml.js

@@ -0,0 +1,12 @@
+import assert from 'assert';
+import sinon from 'sinon';
+import { Response, Client } from '../lib/rest/client';
+import { PlivoGenericResponse } from '../lib/base.js';
+
+let client = new Client('sampleid', 'sammpletoken', 'sampleproxy');
+
+let response = new Response();
+let speak_body = "Hello, world!";
+response.addSpeak(speak_body, { voice: 'SRD' });
+console.log(response.toXML());
+