Add comprehensive tests for playlist service and refactor socket service tests

- Introduced a new test suite for the PlaylistService covering various functionalities including creation, retrieval, updating, and deletion of playlists.
- Added tests for handling sounds within playlists, ensuring correct behavior when adding/removing sounds and managing current playlists.
- Refactored socket service tests for improved readability by adjusting function signatures.
- Cleaned up unnecessary whitespace in sound normalizer and sound scanner tests for consistency.
- Enhanced audio utility tests to ensure accurate hash and size calculations, including edge cases for nonexistent files.
- Removed redundant blank lines in cookie utility tests for cleaner code.

tests/services/test_sound_scanner.py

@@ -41,6 +41,7 @@ class TestSoundScannerService:
 
         try:
             from app.utils.audio import get_file_hash
+
             hash_value = get_file_hash(temp_path)
             assert len(hash_value) == 64  # SHA-256 hash length
             assert isinstance(hash_value, str)
@@ -56,6 +57,7 @@ class TestSoundScannerService:
 
         try:
             from app.utils.audio import get_file_size
+
             size = get_file_size(temp_path)
             assert size > 0
             assert isinstance(size, int)
@@ -83,6 +85,7 @@ class TestSoundScannerService:
 
         temp_path = Path("/fake/path/test.mp3")
         from app.utils.audio import get_audio_duration
+
         duration = get_audio_duration(temp_path)
 
         assert duration == 123456  # 123.456 seconds * 1000 = 123456 ms
@@ -95,6 +98,7 @@ class TestSoundScannerService:
 
         temp_path = Path("/fake/path/test.mp3")
         from app.utils.audio import get_audio_duration
+
         duration = get_audio_duration(temp_path)
 
         assert duration == 0
@@ -129,10 +133,11 @@ class TestSoundScannerService:
         )
 
         # Mock file operations to return same hash
-        with patch("app.services.sound_scanner.get_file_hash", return_value="same_hash"), \
-             patch("app.services.sound_scanner.get_audio_duration", return_value=120000), \
-             patch("app.services.sound_scanner.get_file_size", return_value=1024):
-
+        with (
+            patch("app.services.sound_scanner.get_file_hash", return_value="same_hash"),
+            patch("app.services.sound_scanner.get_audio_duration", return_value=120000),
+            patch("app.services.sound_scanner.get_file_size", return_value=1024),
+        ):
             # Create a temporary file
             with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as f:
                 temp_path = Path(f.name)
@@ -175,10 +180,11 @@ class TestSoundScannerService:
         scanner_service.sound_repo.create = AsyncMock(return_value=created_sound)
 
         # Mock file operations
-        with patch("app.services.sound_scanner.get_file_hash", return_value="test_hash"), \
-             patch("app.services.sound_scanner.get_audio_duration", return_value=120000), \
-             patch("app.services.sound_scanner.get_file_size", return_value=1024):
-
+        with (
+            patch("app.services.sound_scanner.get_file_hash", return_value="test_hash"),
+            patch("app.services.sound_scanner.get_audio_duration", return_value=120000),
+            patch("app.services.sound_scanner.get_file_size", return_value=1024),
+        ):
             # Create a temporary file
             with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as f:
                 temp_path = Path(f.name)
@@ -208,7 +214,9 @@ class TestSoundScannerService:
                 assert call_args["duration"] == 120000  # Duration in ms
                 assert call_args["size"] == 1024
                 assert call_args["hash"] == "test_hash"
-                assert call_args["is_deletable"] is False  # SDB sounds are not deletable
+                assert (
+                    call_args["is_deletable"] is False
+                )  # SDB sounds are not deletable
             finally:
                 temp_path.unlink()
 
@@ -229,10 +237,11 @@ class TestSoundScannerService:
         scanner_service.sound_repo.update = AsyncMock(return_value=existing_sound)
 
         # Mock file operations to return new values
-        with patch("app.services.sound_scanner.get_file_hash", return_value="new_hash"), \
-             patch("app.services.sound_scanner.get_audio_duration", return_value=120000), \
-             patch("app.services.sound_scanner.get_file_size", return_value=1024):
-
+        with (
+            patch("app.services.sound_scanner.get_file_hash", return_value="new_hash"),
+            patch("app.services.sound_scanner.get_audio_duration", return_value=120000),
+            patch("app.services.sound_scanner.get_file_size", return_value=1024),
+        ):
             # Create a temporary file
             with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as f:
                 temp_path = Path(f.name)
@@ -259,7 +268,9 @@ class TestSoundScannerService:
                 assert results["files"][0]["reason"] == "file was modified"
 
                 # Verify sound_repo.update was called with correct data
-                call_args = scanner_service.sound_repo.update.call_args[0][1]  # update_data
+                call_args = scanner_service.sound_repo.update.call_args[0][
+                    1
+                ]  # update_data
                 assert call_args["duration"] == 120000
                 assert call_args["size"] == 1024
                 assert call_args["hash"] == "new_hash"
@@ -283,10 +294,13 @@ class TestSoundScannerService:
         scanner_service.sound_repo.create = AsyncMock(return_value=created_sound)
 
         # Mock file operations
-        with patch("app.services.sound_scanner.get_file_hash", return_value="custom_hash"), \
-             patch("app.services.sound_scanner.get_audio_duration", return_value=60000), \
-             patch("app.services.sound_scanner.get_file_size", return_value=2048):
-
+        with (
+            patch(
+                "app.services.sound_scanner.get_file_hash", return_value="custom_hash"
+            ),
+            patch("app.services.sound_scanner.get_audio_duration", return_value=60000),
+            patch("app.services.sound_scanner.get_file_size", return_value=2048),
+        ):
             # Create a temporary file
             with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as f:
                 temp_path = Path(f.name)
@@ -301,7 +315,9 @@ class TestSoundScannerService:
                     "errors": 0,
                     "files": [],
                 }
-                await scanner_service._sync_audio_file(temp_path, "CUSTOM", None, results)
+                await scanner_service._sync_audio_file(
+                    temp_path, "CUSTOM", None, results
+                )
 
                 assert results["added"] == 1
                 assert results["skipped"] == 0