Handle null mediaMetadata on tracks and albums

tests/test_parsing.py

@@ -198,3 +198,35 @@ def test_track_with_album_parses_album_artist(session):
 
     assert track.album.artist is None
     assert track.artist is None
+
+
+def test_available_track_with_null_media_metadata(session):
+    track = session.track().parse_track(
+        track_json(allowStreaming=True, streamReady=True, mediaMetadata=None)
+    )
+
+    assert track.media_metadata_tags == {}
+
+
+def test_track_media_metadata_tags_are_read(session):
+    track = session.track().parse_track(
+        track_json(
+            allowStreaming=True,
+            streamReady=True,
+            mediaMetadata={"tags": ["LOSSLESS", "HIRES_LOSSLESS"]},
+        )
+    )
+
+    assert track.media_metadata_tags == ["LOSSLESS", "HIRES_LOSSLESS"]
+
+
+def test_album_with_null_media_metadata_keeps_default_tags(session):
+    album = session.album().parse(album_json(mediaMetadata=None))
+
+    assert album.media_metadata_tags == [""]
+
+
+def test_album_media_metadata_tags_are_read(session):
+    album = session.album().parse(album_json(mediaMetadata={"tags": ["LOSSLESS"]}))
+
+    assert album.media_metadata_tags == ["LOSSLESS"]

tidalapi/album.py

@@ -139,8 +139,10 @@ def parse(
         self.audio_quality = json_obj.get("audioQuality")
         self.audio_modes = json_obj.get("audioModes")
 
-        if "mediaMetadata" in json_obj:
-            self.media_metadata_tags = json_obj.get("mediaMetadata")["tags"]
+        # mediaMetadata can be null
+        media_metadata = json_obj.get("mediaMetadata") or {}
+        if "tags" in media_metadata:
+            self.media_metadata_tags = media_metadata["tags"]
 
         self.artist = artist
         self.artists = artists

tidalapi/media.py

@@ -361,7 +361,9 @@ def parse_track(self, json_obj: JsonObj, album: Album | None = None) -> Track:
         if self.available:
             self.access_type = json_obj.get("accessType", "None")
 
-            self.media_metadata_tags = json_obj.get("mediaMetadata", {}).get("tags", {})
+            # mediaMetadata can be null
+            media_metadata = json_obj.get("mediaMetadata") or {}
+            self.media_metadata_tags = media_metadata.get("tags", {})
 
             self.index = json_obj.get("index")
             self.item_uuid = json_obj.get("itemUuid")