lora-manager-e2e

name: lora-manager-e2e description: End-to-end testing and validation for LoRa Manager features. Use when performing automated E2E validation of LoRa Manager standalone mode, including starting/restarting the server, using Chrome DevTools MCP to interact with the web UI at http://127.0.0.1:8188/loras, and verifying frontend-to-backend functionality. Covers workflow validation, UI interaction testing, and integration testing between the standalone Python backend and the browser frontend.

LoRa Manager E2E Testing

This skill provides workflows and utilities for end-to-end testing of LoRa Manager using Chrome DevTools MCP.

Prerequisites

• LoRa Manager project cloned and dependencies installed (pip install -r requirements.txt)
• Chrome browser available for debugging
• Chrome DevTools MCP connected

Quick Start Workflow

1. Start LoRa Manager Standalone

# Use the provided script to start the server
python .agents/skills/lora-manager-e2e/scripts/start_server.py --port 8188

Or manually:

cd /home/miao/workspace/ComfyUI/custom_nodes/ComfyUI-Lora-Manager
python standalone.py --port 8188

Wait for server ready message before proceeding.

2. Open Chrome Debug Mode

# Chrome with remote debugging on port 9222
google-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-lora-manager http://127.0.0.1:8188/loras

3. Connect Chrome DevTools MCP

Ensure the MCP server is connected to Chrome at http://localhost:9222.

4. Navigate and Interact

Use Chrome DevTools MCP tools to:

• Take snapshots: take_snapshot
• Click elements: click
• Fill forms: fill or fill_form
• Evaluate scripts: evaluate_script
• Wait for elements: wait_for

Common E2E Test Patterns

Pattern: Full Page Load Verification

# Navigate to LoRA list page
navigate_page(type="url", url="http://127.0.0.1:8188/loras")

# Wait for page to load
wait_for(text="LoRAs", timeout=10000)

# Take snapshot to verify UI state
snapshot = take_snapshot()

Pattern: Restart Server for Configuration Changes

# Stop current server (if running)
# Start with new configuration
python .agents/skills/lora-manager-e2e/scripts/start_server.py --port 8188 --restart

# Wait and refresh browser
navigate_page(type="reload", ignoreCache=True)
wait_for(text="LoRAs", timeout=15000)

Pattern: Verify Backend API via Frontend

# Execute script in browser to call backend API
result = evaluate_script(function="""
async () => {
  const response = await fetch('/loras/api/list');
  const data = await response.json();
  return { count: data.length, firstItem: data[0]?.name };
}
""")

Pattern: Form Submission Flow

# Fill a form (e.g., search or filter)
fill_form(elements=[
    {"uid": "search-input", "value": "character"},
])

# Click submit button
click(uid="search-button")

# Wait for results
wait_for(text="Results", timeout=5000)

# Verify results via snapshot
snapshot = take_snapshot()

Pattern: Modal Dialog Interaction

# Open modal (e.g., add LoRA)
click(uid="add-lora-button")

# Wait for modal to appear
wait_for(text="Add LoRA", timeout=3000)

# Fill modal form
fill_form(elements=[
    {"uid": "lora-name", "value": "Test LoRA"},
    {"uid": "lora-path", "value": "/path/to/lora.safetensors"},
])

# Submit
click(uid="modal-submit-button")

# Wait for success message or close
wait_for(text="Success", timeout=5000)

Available Scripts

scripts/start_server.py

Starts or restarts the LoRa Manager standalone server.

python scripts/start_server.py [--port PORT] [--restart] [--wait]

Options:

• --port: Server port (default: 8188)
• --restart: Kill existing server before starting
• --wait: Wait for server to be ready before exiting

scripts/wait_for_server.py

Polls server until ready or timeout.

python scripts/wait_for_server.py [--port PORT] [--timeout SECONDS]

Test Scenarios Reference

See references/test-scenarios.md for detailed test scenarios including:

• LoRA list display and filtering
• Model metadata editing
• Recipe creation and management
• Settings configuration
• Import/export functionality

Network Request Verification

Use list_network_requests and get_network_request to verify API calls:

# List recent XHR/fetch requests
requests = list_network_requests(resourceTypes=["xhr", "fetch"])

# Get details of specific request
details = get_network_request(reqid=123)

Console Message Monitoring

# Check for errors or warnings
messages = list_console_messages(types=["error", "warn"])

Performance Testing

# Start performance trace
performance_start_trace(reload=True, autoStop=False)

# Perform actions...

# Stop and analyze
results = performance_stop_trace()

Cleanup

Always ensure proper cleanup after tests:

1. Stop the standalone server
2. Close browser pages (keep at least one open)
3. Clear temporary data if needed