# Test Coverage Summary for Mahavishnu

## Quick Stats

- **Starting Coverage**: 15%
- **Current Coverage**: 33.33%
- **Improvement**: +18.33 percentage points (+122% increase)
- **Target**: 80%
- **Remaining Gap**: 46.67 percentage points

## Test Suite Status

✅ **212 passing unit tests**
⚠️ **20 failing tests** (mostly due to missing test fixtures/mocks)
📝 **24 test files** across `tests/unit/` and `tests/property/`

## Coverage Highlights

### Modules with Excellent Coverage (>90%)
- `core/config.py` - 97.30%
- `core/coordination/models.py` - 95.77%
- `core/errors.py` - 95.45%
- `core/repo_models.py` - 91.43%
- `mcp/protocols/message_bus.py` - 89.58%

### Modules with Good Coverage (70-90%)
- `core/repo_manager.py` - 82.52%
- `messaging/repository_messenger.py` - 72.67%
- `core/permissions.py` - 74.80%
- `session_buddy/integration.py` - 75.94%
- `pools/manager.py` - 72.07%
- `workers/container.py` - 70.41%
- `workers/base.py` - 76.47%

### Critical Modules with Zero Coverage
- `mcp/server_core.py` - 0% (459 lines) **CRITICAL**
- `mcp/tools/*.py` - 0% (810 lines total) **CRITICAL**
- `ingesters/otel_ingester.py` - 0% (175 lines)
- `integrations/session_buddy_poller.py` - 0% (235 lines)
- `engines/llamaindex_adapter.py` - 8.93% (291 lines)
- `engines/agno_adapter.py` - 18% (100 lines)
- `terminal/mcp_client.py` - 0% (94 lines)

## Recommendations for Reaching 80%

### Phase 1: MCP Server Tests (+15-20% coverage)
**Highest Priority - Critical Impact**

Create comprehensive test suite for:
- MCP server initialization and lifecycle
- All 8 MCP tool modules
- Tool invocation and response handling
- Error handling and validation

**Files to create:**
- `tests/unit/test_mcp_server_core.py`
- `tests/unit/test_mcp_tools/` (directory)

### Phase 2: Adapter Tests (+10% coverage)
**High Priority**

Test orchestration adapters:
- LlamaIndex adapter (vector operations)
- Agno adapter (agent execution)
- Prefect adapter (workflow management)

**Files to create:**
- `tests/unit/test_adapters_comprehensive.py`
- Extend `tests/integration/test_llamaindex_adapter.py`
- Extend `tests/integration/test_agno_adapter.py`
- Extend `tests/integration/test_prefect_adapter.py`

### Phase 3: Integration Layer (+8% coverage)
**Medium-High Priority**

Test integration components:
- Session-Buddy poller
- OTel ingester
- Terminal manager (enhanced)

**Files to create:**
- `tests/unit/test_session_buddy_poller.py`
- `tests/unit/test_otel_ingester.py`
- `tests/unit/test_terminal_manager_enhanced.py`

### Phase 4: CLI and Production (+6% coverage)
**Medium Priority**

Test CLI and production features:
- All CLI commands
- Production readiness checks
- Health checks

**Files to create:**
- `tests/unit/test_cli_comprehensive.py`
- `tests/unit/test_production_readiness.py`

### Phase 5: Enhanced Pool Tests (+5% coverage)
**Medium Priority**

Deepen pool testing:
- MahavishnuPool scaling
- SessionBuddyPool delegation
- KubernetesPool orchestration
- Memory aggregation

**Files to enhance:**
- `tests/unit/test_pools.py` (extend)
- `tests/integration/test_pool_orchestration.py` (extend)

### Phase 6: Edge Cases (+3% coverage)
**Lower Priority**

Add comprehensive edge case tests:
- Concurrent operations
- Error recovery scenarios
- Resource exhaustion handling

**Files to enhance:**
- Extend all existing test files with edge cases

## Testing Best Practices Applied

### ✅ What's Working Well
1. **Modular test organization** - Tests grouped by module
2. **Mock usage** - External dependencies properly mocked
3. **Property-based testing** - Hypothesis used for config validation
4. **Integration tests** - End-to-end workflows tested

### ⚠️ What Needs Improvement
1. **Test fixtures** - Need reusable fixtures for common mocks
2. **Error path testing** - Many tests only cover happy paths
3. **Concurrent testing** - Limited tests for race conditions
4. **Integration test coverage** - Many integration points untested

## Quick Win Strategy

To rapidly increase coverage:

1. **MCP Server Smoke Tests** (1-2 days)
   - Test server startup/shutdown
   - Test tool registration
   - Test basic request/response
   - **Impact**: +5% coverage

2. **MCP Tools Basic Tests** (2-3 days)
   - Test each tool can be called
   - Test parameter validation
   - Test error responses
   - **Impact**: +10% coverage

3. **Adapter Initialization Tests** (1-2 days)
   - Test each adapter initializes
   - Test basic health checks
   - **Impact**: +3% coverage

4. **CLI Command Tests** (2-3 days)
   - Test each command parses arguments
   - Test basic execution
   - **Impact**: +5% coverage

**Total quick win impact**: +23% coverage (from 33% to 56%)

## Conclusion

Mahavishnu has a solid foundation with 33.33% coverage and strong test coverage in critical areas like configuration, permissions, and messaging. The path to 80% is clear:

1. **Focus on MCP server and tools** (largest coverage gap)
2. **Add adapter tests** (critical functionality)
3. **Enhance integration tests** (ensure components work together)
4. **Fill in CLI tests** (user-facing code needs coverage)

With focused effort on the high-impact areas identified above, reaching 80% coverage is achievable in 3-4 weeks.

## Resources

- **Detailed Report**: `TEST_COVERAGE_IMPROVEMENT_REPORT.md`
- **HTML Coverage Report**: `htmlcov/index.html`
- **XML Coverage Data**: `coverage.xml`
- **Run Tests**: `pytest --cov=mahavishnu --cov-report=html`
- **View Coverage**: Open `htmlcov/index.html` in browser

---

**Last Updated**: 2026-02-02
**Status**: On track for 80% target
**Next Milestone**: 48% coverage (Phase 1 complete)
