Files
ComfyUI_frontend/tests-ui
bymyself 28cb3bbdb5 [test] Add tests for Sentry issue CLOUD-FRONTEND-STAGING-13 - TypeError on undefined device
Tests reproduce the exact error: "TypeError: Cannot read properties of undefined (reading 'name')"
occurring in DeviceInfo component when props.device is undefined.

Root cause scenarios tested:
- DeviceInfo component receives undefined device prop
- SystemStatsPanel passes undefined device when devices array is empty
- API response malformation leading to missing device data
- Edge cases with corrupted or missing SystemStats data

Sentry URL: https://comfy-org.sentry.io/issues/6804418395/?project=4509681221369857

Tests currently fail as expected, proving the bug exists.
Next: implement defensive programming to handle undefined device props.
2025-09-19 00:19:07 -07:00
..
2025-08-27 06:10:15 -07:00

ComfyUI Frontend Testing Guide

This guide provides an overview of testing approaches used in the ComfyUI Frontend codebase. These guides are meant to document any particularities or nuances of writing tests in this codebase, rather than being a comprehensive guide to testing in general. By reading these guides first, you may save yourself some time when encountering issues.

Testing Documentation

Documentation for unit tests is organized into three guides:

Testing Structure

The ComfyUI Frontend project uses a mixed approach to unit test organization:

  • Component Tests: Located directly alongside their components with a .spec.ts extension
  • Unit Tests: Located in the tests-ui/tests/ directory
  • Store Tests: Located in the tests-ui/tests/store/ directory
  • Browser Tests: These are located in the browser_tests/ directory. There is a dedicated README in the browser_tests/ directory, so it will not be covered here.

Test Frameworks and Libraries

Our tests use the following frameworks and libraries:

Getting Started

To run the tests locally:

# Run unit tests
pnpm test:unit

# Run unit tests in watch mode
pnpm test:unit:dev

# Run component tests with browser-native environment
pnpm test:component

Refer to the specific guides for more detailed information on each testing type.