Files
pydn-ComfyUI-to-Python-Exte…/tests
Peyton DeNiro 29defc5ef1 fix(hardening): address PR #157 review findings
Critical fixes:
- node_runtime.py: change outer handler in _load_module() from except Exception to except BaseException with sys.modules.pop() cleanup, preventing non-Exception BaseExceptions (SystemExit, KeyboardInterrupt) from violating the no-raise contract
- app.py: remove incorrect reassignment of base_node_class_mappings after custom node import; keep it as pre-custom-node baseline so WorkflowPlanner correctly treats extras/custom nodes as NODE_CLASS_MAPPINGS dict lookups instead of direct imports
- Regenerate stale test fixtures (text-to-image.py, upscale-model-loader.py) from current source: updated _load_module() with exec failure cleanup pattern, 3-marker structural verification, and try/finally sys.path restoration in import_custom_nodes()

Suggestions addressed:
- node_runtime.py: _is_comfyui_directory() now checks 3 structural markers (nodes.py, main.py, comfy/) instead of just nodes.py
- generator/render.py: added None guard for getattr on generated_helpers.__all__ items with log warning for missing helpers
- test_import_path_resolution.py: fixed test_sys_path_restored_on_crash to target the server module specifically after sys.path manipulation, so the try/finally restoration path is actually exercised

Nits addressed:
- .gitignore: added missing trailing newline

New test coverage (tests/test_app_base_mappings.py):
- base_node_class_mappings unchanged after custom node import
- deep copy independence of base_node_class_mappings
- render output contains hardened _load_module with except BaseException pattern
2026-05-10 11:29:02 -05:00
..
2026-03-29 14:08:18 -05:00

Tests

This directory contains two test paths:

  • unit tests for exporter behavior
  • runtime validation for committed workflow fixtures

Use the lightweight path for routine contributor validation, and use the runtime path when you need end-to-end confidence against a real ComfyUI checkout.

Prerequisites

  • Run commands from the repo root.
  • Use uv for all project commands.
  • Install the repo environment first:
uv sync
  • Runtime validation also needs a working ComfyUI checkout. Set COMFYUI_PATH to that checkout, or run the tests from a location where a parent directory contains ComfyUI.
  • Runtime-tier tests do not download missing models automatically. If a required model is missing, the fixture fails with model provisioning failure. Use --print-download-plan to print the manual download commands.

Runtime Model Requirements

The current runtime-capable fixtures require these model files in the target ComfyUI checkout:

  • text-to-image: models/checkpoints/v1-5-pruned-emaonly-fp16.safetensors
  • upscale-model-loader: models/upscale_models/RealESRGAN_x4plus.safetensors

Unit Tests

Run the exporter-focused unit test module:

uv run python -m unittest tests.test_upscale_model_loader_export

Run the runtime-harness unit test module:

uv run python -m unittest tests.test_runtime_validation_harness

Run all unittest-discoverable tests under tests:

uv run python -m unittest discover -s tests

Runtime Tests

The runtime harness lives at tests/runtime/run_runtime_validation.py.

Fast Tier

Fast tier validates export behavior against committed fixtures without requiring a full ComfyUI runtime for every fixture. This is the recommended default validation lane for routine changes.

Run all fast-tier compatible fixtures:

uv run python tests/runtime/run_runtime_validation.py --tier fast --fixture all

Run one fixture:

uv run python tests/runtime/run_runtime_validation.py --tier fast --fixture unsafe-kwargs

Runtime Tier

Runtime tier exports inside a real ComfyUI checkout and executes generated Python for runtime-capable fixtures. This is the heavier validation lane for changes that need end-to-end runtime confidence.

Run all runtime-capable fixtures:

uv run python tests/runtime/run_runtime_validation.py --tier runtime --fixture all

Run one runtime-capable fixture:

uv run python tests/runtime/run_runtime_validation.py --tier runtime --fixture text-to-image

Print download commands for missing models instead of failing immediately:

uv run python tests/runtime/run_runtime_validation.py --tier runtime --fixture all --print-download-plan

Runtime Fixture Names

Current committed fixtures:

  • upscale-model-loader
  • text-to-image
  • unsafe-kwargs
  • subgraph-identifiers
  • reused-node-class-branches
  • secondary-output-selection

Notes:

  • --tier runtime only runs fixtures marked runtime-capable.
  • --tier fast only runs fixtures with local test mappings.
  • reused-node-class-branches protects repeated node-class usage and branch wiring in the fast tier.
  • secondary-output-selection protects non-zero output index wiring in the fast tier.

Troubleshooting

  • No module named ...: run uv sync in this repo, and for runtime-tier failures also make sure the target ComfyUI checkout has its own dependencies installed.
  • Could not find a valid ComfyUI checkout for runtime validation.: set COMFYUI_PATH to your ComfyUI checkout, or run the tests from a directory layout where a parent folder contains ComfyUI.
  • Missing models for ...: runtime-tier tests do not fetch models for you. Rerun with --print-download-plan to print the expected curl commands and target model directories, then install the files manually.
  • No selected fixtures are runtime-capable for this tier.: choose a runtime-capable fixture such as text-to-image or upscale-model-loader.
  • Generated script execution fails because files or models are missing: confirm the required models exist under the target ComfyUI checkout and that any staged inputs can be copied into its input/ directory.