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src/test/TEST_SUMMARY.ts

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+/**
+ * Test Suite Summary
+ * ===================
+ * 
+ * Comprehensive test coverage for AudioSort application core services.
+ * All tests use real WAV file generation and isolated test environments.
+ * 
+ * Total Test Count: 67+ tests across 4 test files
+ * 
+ * Test Files:
+ * -----------
+ * 
+ * 1. DatabaseService.test.ts (20 tests)
+ *    - File CRUD operations
+ *    - Tag and category management
+ *    - Duplicate detection
+ *    - Settings persistence
+ * 
+ * 2. TagService.test.ts (14 tests)
+ *    - WAV metadata reading (author, copyright, title, rating)
+ *    - WAV metadata writing
+ *    - Tag normalization and application
+ * 
+ * 3. LibraryService.test.ts (20 tests)
+ *    - Library scanning with metadata priority
+ *    - File operations (rename, move, delete)
+ *    - Temp file cleanup and recovery
+ *    - Metadata management without organizing
+ * 
+ * 4. SearchService.test.ts (13 tests)
+ *    - Fuzzy search across filename, tags, path
+ *    - Advanced filters (author:, copyright:)
+ *    - Typo tolerance and similarity scoring
+ *    - Metadata caching and index rebuilding
+ * 
+ * Running Tests:
+ * --------------
+ * 
+ * # Run all tests
+ * npm test
+ * 
+ * # Run specific service tests
+ * npm run test:database
+ * npm run test:tag
+ * npm run test:library
+ * npm run test:search
+ * 
+ * Test Infrastructure:
+ * --------------------
+ * 
+ * - Framework: Node.js built-in test runner (node:test)
+ * - TypeScript: tsx for runtime execution
+ * - WAV Generation: WaveFile library with real audio data
+ * - Test Isolation: Temporary databases and libraries per suite
+ * - Audio Format: 16-bit PCM, 44100 Hz, sine wave (440 Hz)
+ * - Metadata: WAV INFO chunks (INAM, IART, ICOP, IRTD, etc.)
+ * 
+ * Key Features:
+ * -------------
+ * 
+ * ✓ Real WAV file generation with embedded metadata
+ * ✓ Isolated test environments (no cross-contamination)
+ * ✓ Comprehensive coverage of all service methods
+ * ✓ Edge case testing (missing data, errors, duplicates)
+ * ✓ Fast execution with minimal dependencies
+ * ✓ No mocking - tests use actual service implementations
+ * 
+ * For detailed documentation, see TEST_README.md
+ */