media_title property now returns current source (#10120)

homeassistant/components/media_player/monoprice.py

@@ -137,6 +137,11 @@ class MonopriceZone(MediaPlayerDevice):
         """Return flag of media commands that are supported."""
         return SUPPORT_MONOPRICE
 
+    @property
+    def media_title(self):
+        """Return the current source as medial title."""
+        return self._source
+
     @property
     def source(self):
         """"Return the current input source of the device."""

tests/components/media_player/test_monoprice.py

@@ -219,6 +219,12 @@ class TestMonopriceMediaPlayer(unittest.TestCase):
         self.media_player.update()
         self.assertEqual('one', self.media_player.source)
 
+    def test_media_title(self):
+        """Test media title property."""
+        self.assertIsNone(self.media_player.media_title)
+        self.media_player.update()
+        self.assertEqual('one', self.media_player.media_title)
+
     def test_source_list(self):
         """Test source list property."""
         # Note, the list is sorted!