test: add test to update & clear the default playlist id

program/tests/test_shows.py

@@ -176,3 +176,26 @@ def test_update_show_forbidden_for_common_user(
     response = common_api_client1.patch(url(show), data=update, format="json")
 
     assert response.status_code == 403
+
+
+def test_update_default_playlist_id(admin_api_client, show, default_playlist):
+    update = {"default_playlist_id": default_playlist.id}
+
+    response = admin_api_client.patch(url(show=show), data=update)
+
+    assert response.status_code == 200
+
+    assert response.data["default_playlist_id"] == update["default_playlist_id"]
+
+
+def test_clear_default_playlist_id(admin_api_client, show, default_playlist):
+    show.default_playlist = default_playlist
+    show.save()
+
+    update = {"default_playlist_id": None}
+
+    response = admin_api_client.patch(url(show=show), data=update, format="json")
+
+    assert response.status_code == 200
+
+    assert response.data["default_playlist_id"] == update["default_playlist_id"]