Writing Playwright Tests for ComfyUI_frontend

Golden Rules

1. ALWAYS look at existing tests first. Search browser_tests/tests/ for similar patterns before writing new tests.

2. ALWAYS read the fixture code. The APIs are in browser_tests/fixtures/ - read them directly instead of guessing.

3. Use premade JSON workflow assets instead of building workflows programmatically.

   • Assets live in browser_tests/assets/
   • Load with await comfyPage.workflow.loadWorkflow('feature/my_workflow')
   • Create new assets by starting with browser_tests/assets/default.json and manually editing the JSON to match your desired graph state

Vue Nodes vs LiteGraph: Decision Guide

Choose based on what you're testing, not personal preference: