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+# End-to-End Integration Testing Setup
+
+**Date**: 2026-01-17 (Session 6)  
+**Phase**: Production Readiness - Integration Testing  
+**Status**: 🔄 IN PROGRESS  
+**Priority**: P0 - BLOCKING
+
+---
+
+## Overview
+
+Set up comprehensive end-to-end integration testing infrastructure to verify all 5 Attune services work correctly together. This is a critical milestone before production deployment.
+
+---
+
+## What Was Accomplished
+
+### 1. Test Planning & Documentation
+
+**Created**: `tests/README.md` (564 lines)
+
+Comprehensive test plan covering:
+- **8 Test Scenarios**: Timer automation, workflows, FIFO queues, secrets, inquiries, error handling, notifications, dependency isolation
+- **Test Infrastructure**: Prerequisites, service configuration, running tests
+- **Debugging Guide**: Service logs, database queries, message queue inspection
+- **Success Criteria**: Clear checklist for passing tests
+
+**Test Scenarios Defined:**
+
+1. **Basic Timer Automation** (~30s)
+   - Timer → Event → Rule → Enforcement → Execution → Completion
+   - Verifies core automation chain
+
+2. **Workflow Execution** (~45s)
+   - 3-task sequential workflow
+   - Verifies task ordering and variable propagation
+
+3. **FIFO Queue Ordering** (~20s)
+   - 5 executions with concurrency limit
+   - Verifies execution ordering preserved
+
+4. **Secret Management** (~15s)
+   - Action uses secrets via stdin
+   - Verifies secrets not in environment
+
+5. **Human-in-the-Loop (Inquiry)** (~30s)
+   - Execution pauses for user input
+   - Verifies pause/resume flow
+
+6. **Error Handling & Recovery** (~25s)
+   - Action fails with retries
+   - Verifies retry logic
+
+7. **Real-Time Notifications** (~20s)
+   - WebSocket updates on execution changes
+   - Verifies notification delivery
+
+8. **Dependency Isolation** (~40s)
+   - Two packs with conflicting dependencies
+   - Verifies per-pack virtual environments
+
+---
+
+### 2. E2E Test Configuration
+
+**Created**: `config.e2e.yaml` (204 lines)
+
+Test-specific configuration:
+- Separate test database: `attune_e2e`
+- Different ports: API=18080, WebSocket=18081
+- Faster polling intervals for quicker tests
+- Lower bcrypt cost for faster auth tests
+- Test-specific directories for artifacts/logs/venvs
+- Minimal logging (info level)
+- All features enabled
+
+**Key Settings:**
+```yaml
+environment: test
+database.url: postgresql://postgres:postgres@localhost:5432/attune_e2e
+server.port: 18080
+executor.enforcement_poll_interval: 1  # Faster for tests
+sensor.poll_interval_seconds: 2  # Faster for tests
+worker.max_concurrent_executions: 10
+```
+
+---
+
+### 3. Test Fixtures
+
+**Created Test Pack**: `tests/fixtures/packs/test_pack/`
+
+**Pack Metadata** (`pack.yaml`):
+- Pack ref: `test_pack`
+- Version: 1.0.0
+- Python dependency: requests>=2.28.0
+- Runtime: python3
+
+**Echo Action** (`actions/echo.yaml` + `echo.py`):
+- Simple action that echoes a message
+- Supports delay parameter for timing tests
+- Supports fail parameter for error testing
+- Returns timestamp and execution time
+- 87 lines of Python implementation
+
+**Features:**
+- JSON input/output via stdin/stdout
+- Parameter validation
+- Configurable delay (0-30 seconds)
+- Intentional failure mode for testing
+- Error handling and logging
+
+**Simple Workflow** (`workflows/simple_workflow.yaml`):
+- 3-task sequential workflow
+- Tests task ordering
+- Tests variable passing
+- Tests workflow completion
+- Input parameters: workflow_message, workflow_delay
+
+**Task Flow:**
+1. `task_start` - Echo start message, publish start_time
+2. `task_wait` - Delay for specified seconds
+3. `task_complete` - Echo completion message
+
+---
+
+### 4. Test Infrastructure Setup
+
+**Created Directory Structure:**
+```
+tests/
+├── README.md                    # Test documentation (564 lines)
+├── fixtures/                    # Test data
+│   └── packs/                   # Test packs
+│       └── test_pack/          # E2E test pack
+│           ├── pack.yaml       # Pack metadata
+│           ├── actions/        # Action definitions
+│           │   ├── echo.yaml   # Echo action spec
+│           │   └── echo.py     # Echo action implementation
+│           ├── workflows/      # Workflow definitions
+│           │   └── simple_workflow.yaml
+│           └── sensors/        # Sensor definitions (empty)
+```
+
+---
+
+### 5. Documentation Updates
+
+**Updated**: `work-summary/TODO.md`
+
+- Marked API authentication as complete
+- Reorganized priorities with E2E testing as Priority 1
+- Updated success criteria checklist
+- Added E2E testing to critical path
+
+---
+
+## Test Infrastructure Components
+
+### Services Required
+
+1. **PostgreSQL** - Database (port 5432)
+2. **RabbitMQ** - Message queue (ports 5672, 15672)
+3. **Redis** - Cache (optional, port 6379)
+
+### Attune Services
+
+1. **API** - Port 18080
+2. **Executor** - Background service
+3. **Worker** - Background service
+4. **Sensor** - Background service
+5. **Notifier** - Port 18081 (WebSocket)
+
+### Database Setup
+
+```bash
+# Create E2E test database
+createdb attune_e2e
+
+# Run migrations
+export DATABASE_URL="postgresql://postgres:postgres@localhost:5432/attune_e2e"
+sqlx migrate run
+```
+
+---
+
+## Running Tests (Manual)
+
+### Start All Services
+
+**Terminal 1 - API:**
+```bash
+cd crates/api
+ATTUNE__CONFIG_FILE=../../config.e2e.yaml cargo run
+```
+
+**Terminal 2 - Executor:**
+```bash
+cd crates/executor
+ATTUNE__CONFIG_FILE=../../config.e2e.yaml cargo run
+```
+
+**Terminal 3 - Worker:**
+```bash
+cd crates/worker
+ATTUNE__CONFIG_FILE=../../config.e2e.yaml cargo run
+```
+
+**Terminal 4 - Sensor:**
+```bash
+cd crates/sensor
+ATTUNE__CONFIG_FILE=../../config.e2e.yaml cargo run
+```
+
+**Terminal 5 - Notifier:**
+```bash
+cd crates/notifier
+ATTUNE__CONFIG_FILE=../../config.e2e.yaml cargo run
+```
+
+---
+
+## Next Steps
+
+### Phase 1: Infrastructure (Current - 80% Complete)
+- [x] Document test plan
+- [x] Create config.e2e.yaml
+- [x] Create test fixtures
+- [x] Set up directory structure
+- [ ] Create test database and seed data
+- [ ] Verify all services start with E2E config
+- [ ] Create test helper utilities
+
+### Phase 2: Basic Tests (Next)
+- [ ] Implement helper modules (api_client, service_manager)
+- [ ] Write timer automation test
+- [ ] Write workflow execution test
+- [ ] Write FIFO ordering test
+- [ ] Verify all basic scenarios pass
+
+### Phase 3: Advanced Tests
+- [ ] Write secret management test
+- [ ] Write inquiry flow test
+- [ ] Write error handling test
+- [ ] Write notification test
+- [ ] Write dependency isolation test
+
+### Phase 4: Automation
+- [ ] Create service start/stop scripts
+- [ ] Create automated test runner
+- [ ] Add CI/CD integration
+- [ ] Add performance benchmarks
+
+---
+
+## Technical Decisions
+
+### Why Separate E2E Config?
+
+1. **Isolation**: Separate database prevents test pollution
+2. **Different Ports**: Avoid conflicts with dev services
+3. **Faster Polling**: Reduce test duration
+4. **Lower Security**: Faster tests (bcrypt_cost=4)
+5. **Minimal Logging**: Cleaner test output
+
+### Why Test Fixtures?
+
+1. **Consistency**: Same pack used across all tests
+2. **Simplicity**: Echo action is trivial to verify
+3. **Flexibility**: Supports delay and failure modes
+4. **Realistic**: Real pack structure, not mocks
+
+### Why Manual Service Start First?
+
+1. **Debugging**: Easier to see service output
+2. **Iteration**: Faster test development cycle
+3. **Validation**: Verify config works before automation
+4. **Later**: Automate once tests are stable
+
+---
+
+## Files Created
+
+1. `tests/README.md` - Test documentation (564 lines)
+2. `config.e2e.yaml` - E2E test configuration (204 lines)
+3. `tests/fixtures/packs/test_pack/pack.yaml` - Pack metadata (51 lines)
+4. `tests/fixtures/packs/test_pack/actions/echo.yaml` - Action spec (43 lines)
+5. `tests/fixtures/packs/test_pack/actions/echo.py` - Action implementation (87 lines)
+6. `tests/fixtures/packs/test_pack/workflows/simple_workflow.yaml` - Workflow (56 lines)
+7. `work-summary/2026-01-17-e2e-test-setup.md` - This document
+
+**Total**: 7 files, ~1,000 lines of test infrastructure
+
+---
+
+## Files Modified
+
+1. `work-summary/TODO.md` - Updated priorities and status
+2. `work-summary/TODO.OLD.md` - Moved old TODO for archival
+
+---
+
+## Challenges & Solutions
+
+### Challenge: Multiple Services to Coordinate
+**Solution**: Created clear documentation with step-by-step service startup instructions
+
+### Challenge: Test Isolation
+**Solution**: Separate database, different ports, dedicated config file
+
+### Challenge: Fast Test Execution
+**Solution**: Faster polling intervals, lower bcrypt cost, minimal logging
+
+### Challenge: Realistic Test Data
+**Solution**: Created actual pack with real action structure (not mocks)
+
+---
+
+## Success Criteria
+
+For E2E tests to be considered complete:
+
+- [x] Test plan documented (8 scenarios)
+- [x] Test infrastructure created
+- [x] Test fixtures created (pack + action + workflow)
+- [x] E2E configuration file created
+- [ ] All services start with E2E config
+- [ ] Database seeded with test data
+- [ ] Basic timer test passing
+- [ ] Workflow test passing
+- [ ] All 8 test scenarios passing
+- [ ] No errors in service logs
+- [ ] Clean shutdown of all services
+
+---
+
+## Estimated Timeline
+
+**Phase 1: Setup** (Current)
+- Infrastructure setup: ✅ Complete
+- Database setup: ⏳ 1 hour
+- Service verification: ⏳ 2 hours
+- Helper utilities: ⏳ 2 hours
+- **Total**: ~5 hours remaining
+
+**Phase 2: Basic Tests**
+- Timer automation test: 2-3 hours
+- Workflow execution test: 2-3 hours
+- FIFO ordering test: 2-3 hours
+- **Total**: 6-9 hours
+
+**Phase 3: Advanced Tests**
+- Secret management: 2-3 hours
+- Inquiry flow: 2-3 hours
+- Error handling: 2-3 hours
+- Notifications: 2-3 hours
+- Dependency isolation: 2-3 hours
+- **Total**: 10-15 hours
+
+**Phase 4: Automation**
+- Scripts: 2-3 hours
+- CI/CD: 3-4 hours
+- **Total**: 5-7 hours
+
+**Grand Total**: 26-36 hours (3-5 days)
+
+---
+
+## Benefits Achieved
+
+1. **Clear Test Strategy**: 8 well-defined scenarios
+2. **Comprehensive Documentation**: 564 lines of test guide
+3. **Realistic Fixtures**: Actual pack structure for testing
+4. **Isolated Environment**: Won't interfere with development
+5. **Fast Iteration**: Faster polling for quicker test runs
+6. **Production-Like**: Tests full service integration
+
+---
+
+## Lessons Learned
+
+1. **Document First**: Writing test plan revealed edge cases
+2. **Realistic Fixtures**: Better than mocks for integration tests
+3. **Separate Config**: Essential for test isolation
+4. **Manual First**: Easier to debug before automation
+
+---
+
+## Next Session Goals
+
+1. **Create E2E Database**
+   - Create attune_e2e database
+   - Run migrations
+   - Seed with test pack and user
+
+2. **Verify Service Startup**
+   - Start all 5 services with E2E config
+   - Verify database connections
+   - Verify message queue connections
+   - Check for any configuration issues
+
+3. **Implement First Test**
+   - Create test helper utilities
+   - Write timer automation test
+   - Get first green test passing
+
+---
+
+**Status**: 🔄 IN PROGRESS (Phase 1: ~80% complete)  
+**Priority**: P0 - BLOCKING  
+**Confidence**: HIGH - Clear path forward  
+**Next Milestone**: All services running with E2E config