images: more robust to missing fields

mopidy_spotify/images.py

@@ -59,7 +59,9 @@ def _parse_uri(uri):
 
 def _process_uri(web_client, uri):
     data = web_client.get(f"{uri['type']}s/{uri['id']}")
-    _cache[uri["key"]] = tuple(_translate_image(i) for i in data["images"])
+    _cache[uri["key"]] = tuple(
+        _translate_image(i) for i in data.get("images") or []
+    )
     return {uri["uri"]: _cache[uri["key"]]}
 
 
@@ -72,29 +74,40 @@ def _process_uris(web_client, uri_type, uris):
         return result
 
     data = web_client.get(uri_type + "s", params={"ids": ",".join(ids)})
-    for item in data.get(uri_type + "s", []):
+    for item in (
+        data.get(
+            uri_type + "s",
+        )
+        or []
+    ):
         if not item:
             continue
 
         if "linked_from" in item:
-            uri = ids_to_uris[item["linked_from"]["id"]]
+            item_id = item["linked_from"].get("id")
         else:
-            uri = ids_to_uris[item["id"]]
+            item_id = item.get("id")
+        uri = ids_to_uris.get(item_id)
+        if not uri:
+            continue
 
         if uri["key"] not in _cache:
             if uri_type == "track":
-                album = _parse_uri(item["album"]["uri"])
+                if "album" not in item:
+                    continue
+                album = _parse_uri(item["album"].get("uri"))
                 if not album:
                     continue
                 album_key = album["key"]
                 if album_key not in _cache:
                     _cache[album_key] = tuple(
-                        _translate_image(i) for i in item["album"]["images"]
+                        _translate_image(i)
+                        for i in item["album"].get("images") or []
                     )
                 _cache[uri["key"]] = _cache[album_key]
             else:
                 _cache[uri["key"]] = tuple(
-                    _translate_image(i) for i in item["images"]
+                    _translate_image(i) for i in item.get("images") or []
                 )
         result[uri["uri"]] = _cache[uri["key"]]
 

tests/test_images.py

@@ -271,3 +271,21 @@ def test_service_returns_empty_result(web_client_mock, img_provider):
     result = img_provider.get_images(["spotify:track:41shEpOKyyadtG6lDclooa"])
 
     assert result == {}
+
+
+def test_service_returns_none_result(web_client_mock, img_provider):
+    web_client_mock.get.return_value = {"tracks": None}
+
+    result = img_provider.get_images(["spotify:track:41shEpOKyyadtG6lDclooa"])
+
+    assert result == {}
+
+
+def test_service_returns_none_result_playlist(web_client_mock, img_provider):
+    web_client_mock.get.return_value = {"images": None}
+
+    result = img_provider.get_images(
+        ["spotify:playlist:41shEpOKyyadtG6lDclooa"]
+    )
+
+    assert result == {"spotify:playlist:41shEpOKyyadtG6lDclooa": ()}