Save bytes

lib/espeak/speech.rb

@@ -28,9 +28,11 @@ def speak
 
     # Generates mp3 file as a result of
     # Text-To-Speech conversion.
+    #   this method takes an optional speech param (bytes to save)
+    #   can be used with the combined output of many text to speech conversions
     #
-    def save(filename)
-      speech = bytes_wav
+    def save(filename, speech = nil)
+      speech = bytes_wav if speech.nil?
       res = IO.popen(lame_command(filename, command_options), 'r+') do |process|
         process.write(speech)
         process.close_write

test/cases/speech_test.rb

@@ -13,4 +13,14 @@ def test_save
     assert File.exist?('test/tmp/test.mp3'), 'Mp3 file not generated'
     FileUtils.rm_rf('test/tmp')
   end
+
+  def test_save_with_bytes
+    FileUtils.rm_rf('test/tmp')
+    FileUtils.mkdir_p('test/tmp')
+    bytes = Speech.new('Hello!').bytes_wav
+    assert Speech.new('').save('test/tmp/test_bytes.mp3', bytes)
+    assert File.exist?('test/tmp/test_bytes.mp3'), 'Mp3 file not generated'
+    FileUtils.rm_rf('test/tmp')
+  end
+
 end