Refactor test cases for improved readability and consistency

- Adjusted function signatures in various test files to enhance clarity by aligning parameters.
- Updated patching syntax for better readability across test cases.
- Improved formatting and spacing in test assertions and mock setups.
- Ensured consistent use of async/await patterns in async test functions.
- Enhanced comments for better understanding of test intentions.

tests/utils/test_audio.py

@@ -19,8 +19,8 @@ from app.utils.audio import (
 SHA256_HASH_LENGTH = 64
 BINARY_FILE_SIZE = 700
 EXPECTED_DURATION_MS_1 = 123456  # 123.456 seconds * 1000
-EXPECTED_DURATION_MS_2 = 60000   # 60 seconds * 1000
-EXPECTED_DURATION_MS_3 = 45123   # 45.123 seconds * 1000
+EXPECTED_DURATION_MS_2 = 60000  # 60 seconds * 1000
+EXPECTED_DURATION_MS_3 = 45123  # 45.123 seconds * 1000
 
 
 class TestAudioUtils:
@@ -220,7 +220,8 @@ class TestAudioUtils:
 
     @patch("app.utils.audio.ffmpeg.probe")
     def test_get_audio_duration_fractional_duration(
-        self, mock_probe: MagicMock,
+        self,
+        mock_probe: MagicMock,
     ) -> None:
         """Test audio duration extraction with fractional seconds."""
         # Mock ffmpeg.probe to return fractional duration