# Test Gap Analysis - Week 3 Day 1 Context Intelligence

**Date**: October 27, 2025
**Current Coverage**: 78% (context_manager.py)
**Target Coverage**: 85%+
**Status**: 🔍 Analysis Complete, Improvements Needed

---

## 📊 Current State

### Test Statistics
```
Total Tests: 23
Pass Rate: 100% (23/23)
Coverage: 78% (337 lines, 75 missed)
Execution Time: ~2.14s
```

### Coverage by Category
```
┌─────────────────────────┬───────────┬──────────┬─────────┐
│ Category                │ Covered   │ Missed   │ Rate    │
├─────────────────────────┼───────────┼──────────┼─────────┤
│ Session Analysis        │ 92%       │ 8%       │ Good ✅ │
│ Action Prediction       │ 95%       │ 5%       │ Good ✅ │
│ Git Statistics          │ 85%       │ 15%      │ OK ⚠️   │
│ Error Handling          │ 45%       │ 55%      │ Poor ❌ │
│ Edge Cases              │ 60%       │ 40%      │ Poor ❌ │
│ Performance             │ 0%        │ 100%     │ None ❌ │
│ Security                │ 0%        │ 100%     │ None ❌ │
└─────────────────────────┴───────────┴──────────┴─────────┘
```

---

## 🔍 Missing Coverage Analysis

### 1. Uncovered Lines (75 lines)

#### A. Error Handling Branches (20 lines) ⚠️ Priority: High
```python
# Lines 570-575: _estimate_session_start() OSError handling
except OSError as e:
    logger.warning(f"Error accessing file stats: {e}")
    return None
except Exception as e:
    logger.error(f"Unexpected error estimating session start: {e}")
    return None

# Lines 606-611: _count_uncommitted_changes() error branches
except subprocess.TimeoutExpired:
    logger.warning("Timeout counting uncommitted changes")
except FileNotFoundError:
    logger.debug("git command not available")
except Exception as e:
    logger.error(f"Error counting uncommitted changes: {e}")

# Lines 656-661: _get_git_diff_stats() error branches
except subprocess.TimeoutExpired:
    logger.warning("Timeout getting git diff stats")
except FileNotFoundError:
    logger.debug("git command not available")
except Exception as e:
    logger.error(f"Error getting git diff stats: {e}")

# Lines 758-763: _detect_breaks() error branches
except OSError as e:
    logger.debug(f"Could not stat file {file_path}: {e}")
except Exception as e:
    logger.warning(f"Unexpected error getting file time: {e}")
```

**Impact**: Error paths not tested, potential hidden bugs

#### B. Edge Cases (15 lines) ⚠️ Priority: High
```python
# Line 703: Very short session (<5 min) in _calculate_focus_score()
if duration_minutes < 5:
    return 0.5

# Lines 722-724: High file switch penalty in _calculate_focus_score()
capped_switches = min(switches_per_hour, 40)
penalty = (capped_switches - MEDIUM_FOCUS_THRESHOLD) / 25.0
return max(0.0, 0.5 - penalty * 0.5)

# Line 804: Empty session_start in _calculate_active_periods()
if not session_start:
    return []

# Lines 822-823: First break after session start check
if first_break["start"] > session_start:
    # ...

# Lines 833-838: Last active period calculation
last_break = breaks[-1]
duration = (datetime.now() - last_break["end"]).total_seconds() / 60
# ...
```

**Impact**: Edge case behavior not validated

#### C. Helper Method Coverage (25 lines) ⚠️ Priority: Medium
```python
# Lines 112-116: get_current_context() cache hit path
if datetime.now() - cached_time < self._cache_timeout:
    return cached_context

# Line 255: get_time_context() - night time
else:
    return "night"

# Lines 397, 407: Public helper methods
def get_branch_context(self) -> Dict[str, Any]:
def infer_current_task(self) -> Optional[str]:

# Line 579: clear_cache()
def clear_cache(self) -> None:

# Lines 420-425, 461-462: Git helper methods
def _get_current_branch(self) -> Optional[str]:
def _is_main_branch(self) -> bool:
```

**Impact**: Helper methods partially tested

#### D. Integration Paths (15 lines) ⚠️ Priority: Medium
```python
# Lines 349-354, 475, 497, 507-512: _get_recent_commits() full flow
# Lines 365, 532: _infer_current_task() full flow
# Line 388: detect_active_files() error path
# Line 886: analyze_work_session() with None session_start
```

**Impact**: Integration scenarios not fully covered

---

## ❌ Missing Test Categories

### 1. Performance Tests (0 tests) 🔥 Critical Gap

**What's Missing**:
- No performance benchmarks
- No load testing
- No scalability validation
- No performance regression detection

**Should Test**:
```python
def test_performance_analyze_session_large_project():
    """Test session analysis with 1000+ files."""
    # Create 1000 files
    # Measure execution time
    # Assert < 100ms

def test_performance_detect_breaks_many_files():
    """Test break detection with 500+ files."""
    # Create 500 files with various timestamps
    # Measure execution time
    # Assert < 50ms

def test_performance_focus_score_calculation():
    """Test focus score with many file switches."""
    # Create 200 files
    # Measure execution time
    # Assert < 20ms

def test_performance_git_operations_timeout():
    """Test git operations don't block indefinitely."""
    # Mock slow git command
    # Assert timeout works correctly
    # Assert < 5s total
```

**Impact**: 🔥 **Critical** - No performance validation, potential production issues

---

### 2. Security Tests (0 tests) 🔥 Critical Gap

**What's Missing**:
- No subprocess injection tests
- No path traversal tests
- No input sanitization tests
- No timeout validation

**Should Test**:
```python
def test_security_no_command_injection_in_git():
    """Test git commands don't allow injection."""
    # Try malicious project root: /tmp/test; rm -rf /
    # Assert command doesn't execute rm
    # Assert safe error handling

def test_security_path_traversal_protection():
    """Test file operations stay within project root."""
    # Try accessing ../../etc/passwd
    # Assert blocked by path validation
    # Assert no access outside project

def test_security_subprocess_timeout_enforced():
    """Test subprocess timeouts prevent hangs."""
    # Mock hanging git command
    # Assert timeout raises TimeoutExpired
    # Assert system doesn't hang

def test_security_safe_regex_patterns():
    """Test regex patterns don't cause ReDoS."""
    # Test with pathological strings
    # Assert completes in < 100ms
    # Assert no exponential backtracking
```

**Impact**: 🔥 **Critical** - Security vulnerabilities not validated

---

### 3. Scenario/Integration Tests (0 tests) ⚠️ High Gap

**What's Missing**:
- No end-to-end workflows
- No multi-method integration
- No realistic usage scenarios
- No state transitions

**Should Test**:
```python
def test_scenario_full_work_session():
    """Test complete work session from start to end."""
    # 1. Start session (modify first file)
    # 2. Work for 30 min (modify 5 files)
    # 3. Take break (15 min gap)
    # 4. Resume work (modify 3 more files)
    # 5. Analyze session
    # Assert: duration ~60 min, 1 break, 8 files, focus score >0.7

def test_scenario_feature_branch_workflow():
    """Test typical feature branch development."""
    # 1. Create feature branch
    # 2. Modify 15 files
    # 3. Check prediction
    # Assert: action="create_pr", confidence>0.7

def test_scenario_morning_planning_to_evening_commit():
    """Test full-day workflow."""
    # Morning: 1 file (planning)
    # Afternoon: 10 files (implementation)
    # Evening: check prediction
    # Assert: action="commit_changes" or "documentation"

def test_scenario_long_focus_session_break_reminder():
    """Test break suggestion for long sessions."""
    # Work for 100 minutes with 4 files (high focus)
    # Check prediction
    # Assert: action="take_break", confidence>0.7
```

**Impact**: ⚠️ **High** - Real-world usage not validated

---

### 4. Error Recovery Tests (2 tests) ⚠️ High Gap

**What's Missing**:
- Partial error recovery
- Graceful degradation
- Fallback behaviors
- Corrupted state handling

**Should Test**:
```python
def test_error_recovery_git_unavailable():
    """Test graceful degradation when git unavailable."""
    # Mock git command not found
    # Call all git-dependent methods
    # Assert: returns None/0 instead of crashing
    # Assert: other features still work

def test_error_recovery_filesystem_permission_denied():
    """Test handling of file permission errors."""
    # Mock permission denied on file stat
    # Assert: skips file gracefully
    # Assert: continues with other files

def test_error_recovery_corrupted_timestamps():
    """Test handling of invalid file timestamps."""
    # Mock file with future timestamp
    # Mock file with epoch zero timestamp
    # Assert: handles gracefully
    # Assert: doesn't crash

def test_error_recovery_partial_git_output():
    """Test handling of malformed git output."""
    # Mock incomplete git diff output
    # Assert: returns partial stats or None
    # Assert: doesn't raise exception
```

**Impact**: ⚠️ **High** - Error scenarios not validated

---

### 5. Edge Case Tests (5 tests) ⚠️ Medium Gap

**Current**: Basic edge cases covered
**Missing**:
- Extreme values
- Boundary conditions
- Unusual states

**Should Add**:
```python
def test_edge_case_zero_duration_session():
    """Test session with no time elapsed."""
    # All files modified at same second
    # Assert: duration=0, focus_score=0.5

def test_edge_case_very_long_session():
    """Test session > 8 hours."""
    # Session start 10 hours ago
    # Assert: handles correctly, no overflow

def test_edge_case_many_small_breaks():
    """Test session with 20+ small breaks."""
    # 20 breaks of 15-20 minutes each
    # Assert: all detected, performance OK

def test_edge_case_extreme_file_switches():
    """Test with 500+ file switches."""
    # 500 files in 1 hour = 500 switches/hour
    # Assert: focus_score = 0.0 (minimum)

def test_edge_case_single_very_long_break():
    """Test session with 5-hour break."""
    # Break from 12pm to 5pm
    # Assert: detected as single break
    # Assert: active periods split correctly
```

**Impact**: ⚠️ **Medium** - Extreme scenarios not validated

---

### 6. Cache Behavior Tests (1 test) ⚠️ Medium Gap

**Current**: Basic cache tested
**Missing**:
- Cache invalidation
- Cache timeout
- Multiple cache entries

**Should Test**:
```python
def test_cache_timeout_expiration():
    """Test cache expires after timeout."""
    # Get context (cached)
    # Wait 31 seconds (> 30s timeout)
    # Get context again
    # Assert: recalculated, not cached

def test_cache_clear():
    """Test cache clearing works."""
    # Get context (cached)
    # Clear cache
    # Get context again
    # Assert: recalculated

def test_cache_separate_keys():
    """Test include_prediction parameter creates separate cache."""
    # Get context with prediction (cached)
    # Get context without prediction
    # Assert: both cached separately
```

**Impact**: ⚠️ **Medium** - Cache correctness not fully validated

---

## 📈 Improvement Plan

### Phase 1: Critical Gaps (Target: +10% coverage)
**Priority**: 🔥 Critical
**Time**: 3-4 hours

1. **Performance Tests** (12 tests)
   - Session analysis performance (large projects)
   - Break detection performance (many files)
   - Git operations timeout validation
   - Memory usage profiling

2. **Security Tests** (8 tests)
   - Command injection prevention
   - Path traversal protection
   - Timeout enforcement
   - Input sanitization

**Expected Coverage**: 78% → 85%

---

### Phase 2: High Gaps (Target: +5% coverage)
**Priority**: ⚠️ High
**Time**: 2-3 hours

3. **Error Recovery Tests** (10 tests)
   - Git unavailable scenarios
   - Permission denied handling
   - Corrupted data handling
   - Partial failure recovery

4. **Scenario Tests** (6 tests)
   - Full work session workflow
   - Feature branch workflow
   - Daily workflow (morning to evening)
   - Long focus session

**Expected Coverage**: 85% → 90%

---

### Phase 3: Medium Gaps (Target: +3% coverage)
**Priority**: ⚠️ Medium
**Time**: 1-2 hours

5. **Edge Case Tests** (8 tests)
   - Zero duration sessions
   - Very long sessions
   - Many breaks
   - Extreme file switches

6. **Cache Tests** (4 tests)
   - Cache expiration
   - Cache invalidation
   - Multiple cache keys

**Expected Coverage**: 90% → 93%

---

## 📝 Documentation Gaps

### 1. User-Facing Documentation ❌ Missing

**What's Missing**:
- No usage guide for context features
- No examples of predictions
- No troubleshooting guide
- No performance tuning guide

**Should Create**:
```markdown
docs/CONTEXT_INTELLIGENCE_GUIDE.md
- How to interpret focus scores
- Understanding action predictions
- Troubleshooting git integration
- Performance tuning tips

docs/CONTEXT_API_REFERENCE.md
- analyze_work_session() API
- predict_next_action() API
- Return value specifications
- Error codes and handling
```

---

### 2. Developer Documentation ⚠️ Partial

**What's Missing**:
- No algorithm documentation
- No architecture diagrams
- No extension guide

**Should Create**:
```markdown
docs/CONTEXT_ALGORITHMS.md
- Focus score algorithm explanation
- Break detection algorithm
- Prediction rules documentation
- Threshold tuning guide

docs/CONTEXT_ARCHITECTURE.md
- Component diagram
- Data flow diagram
- Caching strategy
- Performance considerations
```

---

### 3. Examples & Tutorials ❌ Missing

**What's Missing**:
- No code examples
- No use case tutorials
- No integration examples

**Should Create**:
```python
examples/context_basic_usage.py
- Simple session analysis
- Basic prediction usage

examples/context_advanced.py
- Custom focus thresholds
- Integration with workflow

examples/context_mcp_integration.py
- MCP tool usage
- Claude Code integration
```

---

## 🎯 Recommended Actions

### Immediate (This Session)
1. ✅ Create comprehensive test gap analysis (this document)
2. 🔄 Add 12 performance tests
3. 🔄 Add 8 security tests
4. 🔄 Create user guide document
5. 🔄 Create API reference

**Time**: 4-5 hours
**Coverage Target**: 78% → 85%+

### Next Session (Day 2)
1. Add 10 error recovery tests
2. Add 6 scenario tests
3. Create algorithm documentation
4. Add code examples
5. MCP tools implementation

**Time**: 3-4 hours
**Coverage Target**: 85% → 90%+

### Future (Day 3+)
1. Add remaining edge case tests
2. Add cache behavior tests
3. Performance benchmarking suite
4. Architecture documentation
5. Tutorial videos

**Time**: 2-3 hours
**Coverage Target**: 90% → 95%+

---

## 📊 Success Metrics

### Coverage Goals
```
┌────────────┬─────────┬────────┬──────────┐
│ Phase      │ Current │ Target │ Status   │
├────────────┼─────────┼────────┼──────────┤
│ Initial    │ 78%     │ 78%    │ ✅ Done  │
│ Phase 1    │ 78%     │ 85%    │ 🔄 Next  │
│ Phase 2    │ 85%     │ 90%    │ ⏳ Later │
│ Phase 3    │ 90%     │ 93%+   │ ⏳ Later │
└────────────┴─────────┴────────┴──────────┘
```

### Quality Goals
```
┌────────────────────┬─────────┬────────┬──────────┐
│ Category           │ Current │ Target │ Status   │
├────────────────────┼─────────┼────────┼──────────┤
│ Performance Tests  │ 0       │ 12     │ ❌ Gap   │
│ Security Tests     │ 0       │ 8      │ ❌ Gap   │
│ Scenario Tests     │ 0       │ 6      │ ❌ Gap   │
│ Error Tests        │ 2       │ 12     │ ⚠️ Gap   │
│ Edge Case Tests    │ 5       │ 13     │ ⚠️ Gap   │
│ Documentation      │ 1       │ 5      │ ❌ Gap   │
└────────────────────┴─────────┴────────┴──────────┘
```

---

## 🎯 Conclusion

**Current State**: Good foundation, significant gaps
**Test Coverage**: 78% (Good, but improvable)
**Critical Gaps**: Performance, Security, Documentation
**Recommended Action**: Implement Phase 1 immediately

**Priority Order**:
1. 🔥 **Performance Tests** (Critical - No validation)
2. 🔥 **Security Tests** (Critical - Potential vulnerabilities)
3. ⚠️ **Error Recovery** (High - Production readiness)
4. ⚠️ **Scenario Tests** (High - Real-world validation)
5. ⚠️ **Documentation** (High - User experience)
6. ⚠️ **Edge Cases** (Medium - Completeness)

**Next Steps**: Implement Phase 1 tests and documentation.
