Tests: route tests get stand-in model files so a machine without models still sees a deleted file; optional-slot list follows the two LTX presets

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BzJLJWVu7RZnbRqm3nYAnX

core/tests/test_routes_ltx_project.py

@@ -4,7 +4,7 @@ and for a render. Each must answer JSON: a page that gets anything else fails on
 
 import pytest
 
-from core.tests.test_routes_pipeline import _request, registered, server  # noqa: F401
+from core.tests.test_routes_pipeline import _request, model_files, registered, server  # noqa: F401
 
 
 def _preset(pid):

core/tests/test_routes_pipeline.py

@@ -20,7 +20,22 @@ from core import routes  # noqa: E402
 
 
 @pytest.fixture(scope="module")
-def registered(comfyui):
+def model_files(comfyui, tmp_path_factory):
+    """One empty file in each folder a default loader reads, so the loaders' dropdowns have something to offer.
+
+    A machine without models (a cloud test run) would otherwise report "nothing fills it" for every loader, and a
+    test that deletes ONE file could not tell its own problem from that. The nodes read their options when they
+    register, so this comes before `registered`."""
+    import folder_paths
+    root = tmp_path_factory.mktemp("models")
+    for kind in ("diffusion_models", "vae", "text_encoders", "clip", "loras"):
+        (root / kind).mkdir()
+        (root / kind / "stand-in.safetensors").write_bytes(b"\0")
+        folder_paths.add_model_folder_path(kind, str(root / kind))
+
+
+@pytest.fixture(scope="module")
+def registered(comfyui, model_files):
     """FunUI's nodes registered the way ComfyUI registers them.
 
     Without this the pipeline's slots all look like missing nodes, because the

modules/models/tests/test_optional_slots.py

@@ -44,10 +44,11 @@ def _cases():
     return [(preset["id"], slot["id"]) for preset in _presets() for slot in preset["slots"] if slot["node"] in table]
 
 
-def test_the_seven_optional_node_classes_are_declared():
+def test_the_optional_node_classes_the_presets_use_are_declared():
+    # FunUIIdentityTransfer is still declared (LTX pipelines saved with it keep running) but no preset carries it any more.
     nodes = {s["node"] for p in _presets() for s in p["slots"] if s["node"] in _table()}
     assert nodes == {"FunUIEnhancePrompt", "FunUIShotCamera", "FunUIPromptMarkup", "FunUIApplyPromptMarkup",
-                     "FunUINegativeErase", "FunUICutOpening", "FunUIIdentityTransfer"}
+                     "FunUINegativeErase", "FunUICutOpening"}
 
 
 @pytest.mark.parametrize("preset_id,slot_id", _cases())

modules/sampling/noise_merge/tests/test_through_the_app.py

@@ -13,7 +13,7 @@ import torch
 
 pytest.importorskip("aiohttp")
 
-from core.tests.test_routes_pipeline import _request, registered, server  # noqa: E402,F401
+from core.tests.test_routes_pipeline import _request, model_files, registered, server  # noqa: E402,F401
 
 
 @pytest.fixture(autouse=True)