Refactor test files for improved readability and consistency

- Removed unnecessary blank lines and adjusted formatting in test files.
- Ensured consistent use of commas in function calls and assertions across various test cases.
- Updated import statements for better organization and clarity.
- Enhanced mock setups in tests for better isolation and reliability.
- Improved assertions to follow a consistent style for better readability.

tests/services/test_player.py

@@ -4,14 +4,12 @@ import asyncio
 import threading
 import time
 from pathlib import Path
-from unittest.mock import AsyncMock, MagicMock, Mock, patch
+from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
 from sqlmodel.ext.asyncio.session import AsyncSession
 
 from app.models.sound import Sound
-from app.models.sound_played import SoundPlayed
-from app.models.user import User
 from app.services.player import (
     PlayerMode,
     PlayerService,
@@ -21,7 +19,6 @@ from app.services.player import (
     initialize_player_service,
     shutdown_player_service,
 )
-from app.utils.audio import get_sound_file_path
 
 
 class TestPlayerState:
@@ -200,7 +197,7 @@ class TestPlayerService:
             mock_file_path = Mock(spec=Path)
             mock_file_path.exists.return_value = True
             mock_path.return_value = mock_file_path
-            
+
             with patch.object(player_service, "_broadcast_state", new_callable=AsyncMock):
                 mock_media = Mock()
                 player_service._vlc_instance.media_new.return_value = mock_media
@@ -738,7 +735,7 @@ class TestPlayerService:
 
             # Verify sound play count was updated
             mock_sound_repo.update.assert_called_once_with(
-                mock_sound, {"play_count": 6}
+                mock_sound, {"play_count": 6},
             )
 
             # Verify SoundPlayed record was created with None user_id for player
@@ -768,7 +765,7 @@ class TestPlayerService:
             mock_file_path = Mock(spec=Path)
             mock_file_path.exists.return_value = False  # File doesn't exist
             mock_path.return_value = mock_file_path
-            
+
             # This should fail because file doesn't exist
             result = asyncio.run(player_service.play(0))
             # Verify the utility was called
@@ -817,4 +814,4 @@ class TestPlayerServiceGlobalFunctions:
         """Test getting player service when not initialized."""
         with patch("app.services.player.player_service", None):
             with pytest.raises(RuntimeError, match="Player service not initialized"):
-                get_player_service()
+                get_player_service()