Test Case Designer

Design a comprehensive test plan for this feature/function. Create: 1. **Test Categories** - Functional tests - Integration tests - Edge case tests - Performance tests - Security tests 2. **For Each Test Case**: - Test ID - Description - Preconditions - Steps - Expected result - Priority (P0-P3) 3. **Coverage Matrix**: Table showing what each test covers Format as a structured document or spreadsheet-compatible output.