# Phase 7 Quality Report: Integration Testing

## Overview
Phase 7 focused on verifying the end-to-end data pipeline, system performance, and long-term stability of the ADCP Recorder.

## Test Results Summary

| Category | Total Tests | Passed | Failed | Success Rate |
| :--- | :--- | :--- | :--- | :--- |
| **All Tests** | 373 | 373 | 0 | 100% |
| E2E Tests | 2 | 2 | 0 | 100% |
| Performance Tests | 3 | 3 | 0 | 100% |
| Unit Tests (Legacy Fixes) | 368 | 368 | 0 | 100% |

## Key Verification Areas

### 1. End-to-End (E2E) Verification
- **Test Case:** `test_full_pipeline_e2e`
  - **Result:** PASSED
  - **Details:** Verified that NMEA sentences flow from the serial port to the correct DuckDB tables (`pnori`, `pnors_df100`, `pnorc_df100`) and that binary data is correctly diverted to `parse_errors`.
- **Test Case:** `test_reconnect_scenario`
  - **Result:** PASSED
  - **Details:** Verified that the recorder correctly re-establishes a serial connection after a `SerialException` and resumes data ingestion without losing downstream stability.

### 2. Performance Analysis
- **Throughput:** ~2.0 messages/second (file-based).
- **Bottleneck Identified:** The "synchronous commit per message" strategy in `SerialConsumer` is the primary limiting factor for throughput. While ideal for real-time 1Hz/2Hz ADCP data, it would require batching for high-speed playback scenarios.
- **Concurrency:** `test_database_concurrency` verified that multiple threads can safely interact with the database using the thread-local connection pool in `DatabaseManager`.

### 3. Stability & Memory
- **Memory Growth:** 0.00 MB growth detected over 500+ messages.
- **Stability:** Long-duration simulation showed no crashes or queue overflows under standard 1Hz load.

## Conclusion
Phase 7 is COMPLETE and all quality bars have been met. The system is stable, handles disconnections gracefully, and maintains data integrity under high-fidelity simulation.
