Update project documentation to reflect Phase 2 completion and enhanced features, including configuration management, advanced sorting, and improved visual design.

memory-bank/projectbrief.md

@@ -47,24 +47,29 @@ hosts/
 ├── README.md
 ├── src/
 │   └── hosts/
-│       ├── init.py
+│       ├── __init__.py
 │       ├── main.py         # Entry point (uv run hosts)
 │       ├── tui/            # UI components (Textual)
-│       │   ├── init.py
-│       │   └── views.py
+│       │   ├── __init__.py
+│       │   └── config_modal.py  # Configuration modal dialog
 │       ├── core/           # Business logic
-│       │   ├── init.py
+│       │   ├── __init__.py
 │       │   ├── parser.py   # /etc/hosts parsing & writing
 │       │   ├── models.py   # Data models (Entry, Comment, etc.)
-│       │   ├── dns.py      # DNS resolution & comparison
-│       │   └── manager.py  # Core operations (activate, sort, reorder)
-│       └── utils.py
+│       │   ├── config.py   # Configuration management
+│       │   ├── dns.py      # DNS resolution & comparison (planned)
+│       │   └── manager.py  # Core operations (planned for edit mode)
+│       └── utils.py        # Shared utilities (planned)
 └── tests/
-├── init.py
-├── test_parser.py
-├── test_manager.py
-├── test_dns.py
-└── test_tui.py
+    ├── __init__.py
+    ├── test_parser.py      # Parser tests
+    ├── test_models.py      # Data model tests
+    ├── test_config.py      # Configuration tests
+    ├── test_config_modal.py # Modal dialog tests
+    ├── test_main.py        # Main application tests
+    ├── test_manager.py     # Core operations tests (planned)
+    ├── test_dns.py         # DNS resolution tests (planned)
+    └── test_tui.py         # Additional TUI tests (planned)
 
 ## Testing Strategy (TDD)
 
@@ -76,12 +81,40 @@ hosts/
 - Mock `/etc/hosts` file I/O and DNS lookups to avoid system dependencies.
 - Include integration tests for the Textual TUI (using `textual.testing` or snapshot testing).
 
-### Example Tests to Start With (MVP)
+### Implemented Tests (97 tests total)
 
-1. **Parsing Tests**:
-   - Parse simple `/etc/hosts` with comments and disabled entries.
-   - Ensure writing back preserves file integrity.
-2. **Activation/Deactivation Tests**:
-   - Toggle entries and validate updated state.
-3. **TUI Rendering Tests**:
-   - Ensure initial layout shows entries correctly.
+1. **Parsing Tests** (15 tests):
+   - Parse simple `/etc/hosts` with comments and disabled entries
+   - Ensure writing back preserves file integrity
+   - Handle edge cases like empty files, comments-only files
+   - Validate round-trip parsing accuracy
+
+2. **Data Model Tests** (27 tests):
+   - HostEntry creation, validation, and serialization
+   - HostsFile container operations and state management
+   - IP address validation for IPv4 and IPv6
+   - Hostname validation and edge cases
+
+3. **Configuration Tests** (22 tests):
+   - JSON persistence and error handling
+   - Default settings management
+   - Configuration loading and saving
+   - Default entry detection and filtering
+
+4. **Modal Dialog Tests** (15 tests):
+   - Configuration modal lifecycle
+   - User interaction handling
+   - Keyboard binding validation
+   - State management during configuration changes
+
+5. **Main Application Tests** (18 tests):
+   - Application initialization and startup
+   - File loading and error handling
+   - User interface state management
+   - Sorting and navigation functionality
+
+### Future Test Areas (Planned)
+- **Edit Mode Tests**: Permission management and file modification
+- **DNS Resolution Tests**: Hostname resolution and IP comparison
+- **Performance Tests**: Large file handling and optimization
+- **Integration Tests**: End-to-end workflow testing