fix: make pytest collection coexist with ComfyUI root __init__

pytest collects the repo root as a Package and imports its __init__.py
during test setup; guard the ComfyUI-only relative imports behind
__package__ so the suite can import gates.* standalone. Drop the
tests/ package marker and pin pythonpath/testpaths.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

__init__.py

@@ -1,7 +1,17 @@
 """ComfyUI-Datasete-Gates — custom nodes."""
-from .gates.node import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
-from .gates import routes  # noqa: F401  (registers aiohttp routes on import)
 
 WEB_DIRECTORY = "./web"
 
+# ComfyUI loads this directory as a package, so __package__ is set and the
+# relative imports below resolve. pytest, however, collects the repo root as a
+# Package and imports this file standalone (no parent package) during test
+# setup — in that case the relative imports would raise. Guard on __package__
+# so the test suite can import `gates.*` without dragging in aiohttp/comfy.
+if __package__:
+    from .gates.node import NODE_CLASS_MAPPINGS, NODE_DISPLAY_NAME_MAPPINGS
+    from .gates import routes  # noqa: F401  (registers aiohttp routes on import)
+else:  # pragma: no cover - exercised only under pytest collection
+    NODE_CLASS_MAPPINGS = {}
+    NODE_DISPLAY_NAME_MAPPINGS = {}
+
 __all__ = ["NODE_CLASS_MAPPINGS", "NODE_DISPLAY_NAME_MAPPINGS", "WEB_DIRECTORY"]

pyproject.toml

@@ -7,3 +7,12 @@ requires-python = ">=3.10"
 [tool.comfy]
 PublisherId = "ethanfel"
 DisplayName = "ComfyUI Datasete Gates"
+
+[tool.pytest.ini_options]
+# The repo-root __init__.py is required by ComfyUI but breaks pytest's default
+# "prepend" collection if tests/ is a package (pytest walks up the __init__.py
+# chain and tries to import the root package, whose relative imports fail
+# outside ComfyUI). Keeping tests/ a non-package dir avoids that; pythonpath
+# makes `gates` importable from the repo root.
+pythonpath = ["."]
+testpaths = ["tests"]