feat: integrate SimpleCADAPI 2.0.2 CAD workflows

designir-pipeline/tests/test_assembly_designir.py

@@ -0,0 +1,87 @@
+from __future__ import annotations
+
+import copy
+import importlib.util
+import json
+from pathlib import Path
+
+
+REPO = Path(__file__).resolve().parents[2]
+MODEL_DIR = REPO / "models" / "lcd25-reducer" / "semantic-assembly"
+SCHEMA_PATH = (
+    REPO
+    / "designir-pipeline"
+    / "contracts"
+    / "assembly-designir-1.0.schema.json"
+)
+VALIDATOR_PATH = MODEL_DIR / "validate_assembly_design.py"
+
+
+def load_validator():
+    spec = importlib.util.spec_from_file_location(
+        "assembly_design_validator", VALIDATOR_PATH
+    )
+    assert spec and spec.loader
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def load_json(path: Path):
+    return json.loads(path.read_text(encoding="utf-8"))
+
+
+def test_lcd25_coordinate_free_base_model_is_valid():
+    validator = load_validator()
+    schema = load_json(SCHEMA_PATH)
+    payload = load_json(
+        MODEL_DIR / "lcd25-harmonic-reducer.assembly-designir.json"
+    )
+    report = validator.validate(payload, schema)
+    assert report["status"] == "pass"
+    assert report["coordinate_free"] is True
+    assert report["component_count"] == 10
+    assert report["relation_count"] == 15
+
+
+def test_output_shaft_patch_preserves_coordinate_free_contract():
+    validator = load_validator()
+    schema = load_json(SCHEMA_PATH)
+    payload = load_json(
+        MODEL_DIR / "lcd25-harmonic-reducer.assembly-designir.json"
+    )
+    patch = load_json(MODEL_DIR / "variants" / "add-output-shaft.patch.json")
+    resolved = validator.apply_patch(payload, patch)
+    report = validator.validate(resolved, schema)
+    assert report["status"] == "pass"
+    assert report["coordinate_free"] is True
+    assert report["component_count"] == 11
+    assert "output_shaft" in {
+        component["id"] for component in resolved["components"]
+    }
+    assert "output_shaft" in next(
+        group["members"]
+        for group in resolved["kinematics"]["rigid_groups"]
+        if group["id"] == "output_group"
+    )
+
+
+def test_authored_transform_is_rejected():
+    validator = load_validator()
+    schema = load_json(SCHEMA_PATH)
+    payload = load_json(
+        MODEL_DIR / "lcd25-harmonic-reducer.assembly-designir.json"
+    )
+    invalid = copy.deepcopy(payload)
+    invalid["components"][0]["transform"] = [
+        [1, 0, 0, 0],
+        [0, 1, 0, 0],
+        [0, 0, 1, 0],
+    ]
+    report = validator.validate(invalid, schema)
+    assert report["status"] == "fail"
+    assert report["coordinate_free"] is False
+    assert any(
+        "coordinate placement key is forbidden" in failure
+        for failure in report["failures"]
+    )