Expanded the useWebSocket.test.ts from minimal coverage to 20 comprehensive tests covering:
WebSocket Mock Tests (6 tests)
- Creates WebSocket with correct URL
- Starts in CONNECTING state
- Transitions to OPEN state
- Can receive messages
- Can close connection
- Tracks all instances
Hook Connection Tests (2 tests)
- Connects to WebSocket on mount
- Reports connected state when WebSocket opens
Message Handling Tests (9 tests)
- Updates printer status in query cache on printer_status message
- Preserves wifi_signal when new value is null
- Invalidates archives on print_complete message
- Invalidates archives on archive_created message
- Invalidates archives on archive_updated message (new handler for timelapse auto-assignment)
- Ignores pong messages without error
- Handles malformed JSON gracefully
- Handles unknown message types gracefully
sendMessage Tests (2 tests)
- Sends JSON message when connected
- Does not send when disconnected
Reconnection Tests (2 tests)
- Reconnects after connection closes
- Cleans up on unmount
Key Fixes
- Fixed MSW (Mock Service Worker) conflict by:
a. Adding addEventListener/removeEventListener to MockWebSocket class
b. Updating MSW setup to bypass WebSocket requests
c. Properly managing WebSocket mock lifecycle in each test
Test Results:
- Frontend: 137 tests passed (9 test files)
- Backend: 346 tests passed
Bambuddy
Self-hosted print archive and management system for Bambu Lab 3D printers
Features • Screenshots • Quick Start • Documentation • Contributing
Testers Needed! I only have X1C and H2D devices. Help make Bambuddy work with all Bambu Lab printers by reporting your experience!
Why Bambuddy?
- Own your data — All print history stored locally, no cloud dependency
- Works offline — Uses LAN Mode for direct printer communication
- Full automation — Schedule prints, auto power-off, get notified when done
- Multi-printer support — Manage your entire print farm from one interface
✨ Features
📦 Print Archive
📊 Monitoring & Stats
⏰ Scheduling & Automation
📁 Projects
|
🔔 Notifications
🔧 Integrations
🛠️ Maintenance
🎛️ Printer Control
|
Plus: Dark/light theme • Mobile responsive • Keyboard shortcuts • Multi-language (EN/DE) • Auto updates • Database backup/restore • System info dashboard
📸 Screenshots
Click to expand screenshots
Real-time printer monitoring with AMS status
Print archive with 3D preview and project assignment
Group related prints into projects
Print scheduling and queue management
Customizable statistics dashboard
Maintenance tracking per printer
Configure maintenance types and intervals
Pressure advance (K-factor) profiles
Edit K-factor profile settings
General configuration and integrations
Smart plug control and energy monitoring
🚀 Quick Start
Requirements
- Python 3.10+ (3.11/3.12 recommended)
- Bambu Lab printer with LAN Mode enabled
- Same local network as printer
Installation
# Clone and setup
git clone https://github.com/maziggy/bambuddy.git
cd bambuddy
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
# Run
uvicorn backend.app.main:app --host 0.0.0.0 --port 8000
Open http://localhost:8000 and add your printer!
Need detailed instructions? See the Installation Guide
Enabling LAN Mode
- On printer: Settings → Network → LAN Mode
- Enable LAN Mode and note the Access Code
- Find IP address in network settings
- Find Serial Number in device info
📚 Documentation
Full documentation available at wiki.bambuddy.cool:
- Installation — All installation methods
- Getting Started — First printer setup
- Features — Detailed feature guides
- Troubleshooting — Common issues & solutions
- API Reference — REST API documentation
🖨️ Supported Printers
| Series | Models | Status |
|---|---|---|
| H2 | H2C, H2D, H2S | ✅ Tested (H2D) |
| X1 | X1, X1 Carbon | ✅ Tested (X1C) |
| P1 | P1P, P1S | 🧪 Needs testing |
| A1 | A1, A1 Mini | 🧪 Needs testing |
🛠️ Tech Stack
| Component | Technology |
|---|---|
| Backend | Python, FastAPI, SQLAlchemy |
| Frontend | React, TypeScript, Tailwind CSS |
| Database | SQLite |
| 3D Viewer | Three.js |
| Communication | MQTT (TLS), FTPS |
🤝 Contributing
Contributions welcome! Here's how to help:
- Test — Report issues with your printer model
- Translate — Add new languages
- Code — Submit PRs for bugs or features
- Document — Improve wiki and guides
# Development setup
git clone https://github.com/maziggy/bambuddy.git
cd bambuddy
# Backend
python3 -m venv venv && source venv/bin/activate
pip install -r requirements.txt
DEBUG=true uvicorn backend.app.main:app --reload
# Frontend (separate terminal)
cd frontend && npm install && npm run dev
See CONTRIBUTING.md for guidelines.
📄 License
MIT License — see LICENSE for details.
🙏 Acknowledgments
- Bambu Lab for amazing printers
- The reverse engineering community for protocol documentation
- All testers and contributors
Made with ❤️ for the 3D printing community
Report Bug •
Request Feature •
Documentation




