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.

app/api/v1/sounds.py

@@ -10,12 +10,12 @@ from app.core.dependencies import get_current_active_user_flexible
 from app.models.credit_action import CreditActionType
 from app.models.user import User
 from app.repositories.sound import SoundRepository
-from app.services.extraction import ExtractionInfo, ExtractionService
 from app.services.credit import CreditService, InsufficientCreditsError
+from app.services.extraction import ExtractionInfo, ExtractionService
 from app.services.extraction_processor import extraction_processor
 from app.services.sound_normalizer import NormalizationResults, SoundNormalizerService
 from app.services.sound_scanner import ScanResults, SoundScannerService
-from app.services.vlc_player import get_vlc_player_service, VLCPlayerService
+from app.services.vlc_player import VLCPlayerService, get_vlc_player_service
 
 router = APIRouter(prefix="/sounds", tags=["sounds"])
 
@@ -125,13 +125,13 @@ async def scan_custom_directory(
 async def normalize_all_sounds(
     current_user: Annotated[User, Depends(get_current_active_user_flexible)],
     normalizer_service: Annotated[
-        SoundNormalizerService, Depends(get_sound_normalizer_service)
+        SoundNormalizerService, Depends(get_sound_normalizer_service),
     ],
     force: bool = Query(
-        False, description="Force normalization of already normalized sounds"
+        False, description="Force normalization of already normalized sounds",
     ),
     one_pass: bool | None = Query(
-        None, description="Use one-pass normalization (overrides config)"
+        None, description="Use one-pass normalization (overrides config)",
     ),
 ) -> dict[str, NormalizationResults | str]:
     """Normalize all unnormalized sounds."""
@@ -163,13 +163,13 @@ async def normalize_sounds_by_type(
     sound_type: str,
     current_user: Annotated[User, Depends(get_current_active_user_flexible)],
     normalizer_service: Annotated[
-        SoundNormalizerService, Depends(get_sound_normalizer_service)
+        SoundNormalizerService, Depends(get_sound_normalizer_service),
     ],
     force: bool = Query(
-        False, description="Force normalization of already normalized sounds"
+        False, description="Force normalization of already normalized sounds",
     ),
     one_pass: bool | None = Query(
-        None, description="Use one-pass normalization (overrides config)"
+        None, description="Use one-pass normalization (overrides config)",
     ),
 ) -> dict[str, NormalizationResults | str]:
     """Normalize all sounds of a specific type (SDB, TTS, EXT)."""
@@ -210,13 +210,13 @@ async def normalize_sound_by_id(
     sound_id: int,
     current_user: Annotated[User, Depends(get_current_active_user_flexible)],
     normalizer_service: Annotated[
-        SoundNormalizerService, Depends(get_sound_normalizer_service)
+        SoundNormalizerService, Depends(get_sound_normalizer_service),
     ],
     force: bool = Query(
-        False, description="Force normalization of already normalized sound"
+        False, description="Force normalization of already normalized sound",
     ),
     one_pass: bool | None = Query(
-        None, description="Use one-pass normalization (overrides config)"
+        None, description="Use one-pass normalization (overrides config)",
     ),
 ) -> dict[str, str]:
     """Normalize a specific sound by ID."""
@@ -283,7 +283,7 @@ async def create_extraction(
             )
 
         extraction_info = await extraction_service.create_extraction(
-            url, current_user.id
+            url, current_user.id,
         )
 
         # Queue the extraction for background processing
@@ -398,7 +398,7 @@ async def play_sound_with_vlc(
             await credit_service.validate_and_reserve_credits(
                 current_user.id,
                 CreditActionType.VLC_PLAY_SOUND,
-                {"sound_id": sound_id, "sound_name": sound.name}
+                {"sound_id": sound_id, "sound_name": sound.name},
             )
         except InsufficientCreditsError as e:
             raise HTTPException(
@@ -408,7 +408,7 @@ async def play_sound_with_vlc(
 
         # Play the sound using VLC
         success = await vlc_player.play_sound(sound)
-        
+
         # Deduct credits based on success
         await credit_service.deduct_credits(
             current_user.id,
@@ -416,7 +416,7 @@ async def play_sound_with_vlc(
             success,
             {"sound_id": sound_id, "sound_name": sound.name},
         )
-        
+
         if not success:
             raise HTTPException(
                 status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,