Split project into frontend and backend

backend/tests/test_parametric_parts_catalog.py

@@ -0,0 +1,108 @@
+from __future__ import annotations
+
+import importlib.util
+from pathlib import Path
+
+import pytest
+
+from src.cad.parametric_parts import (
+    PART_CAPABILITIES,
+    export_parametric_part,
+    get_parametric_part_capability,
+    list_parametric_part_capability_manifests,
+    make_parametric_part,
+    validate_part_parameters,
+)
+
+
+EXPECTED_SIMPLECADAPI_PARTS = {
+    "spur_gear",
+    "straight_bevel_gear",
+    "helical_gear",
+    "herringbone_gear",
+    "spur_ring_gear",
+    "helical_ring_gear",
+    "herringbone_ring_gear",
+    "cycloidal_disc",
+    "spur_rack",
+    "helical_rack",
+    "herringbone_rack",
+    "ball_bearing",
+    "roller_chain_sprocket",
+    "bolt",
+    "nut",
+    "n_hole_flange",
+    "naca_propeller_blade",
+    "threaded_rod",
+}
+
+
+def test_catalog_covers_all_simplecadapi_formula_factories() -> None:
+    assert EXPECTED_SIMPLECADAPI_PARTS <= set(PART_CAPABILITIES)
+    manifests = list_parametric_part_capability_manifests()
+    assert len(manifests) >= len(EXPECTED_SIMPLECADAPI_PARTS)
+    by_id = {item["part_id"]: item for item in manifests}
+    assert by_id["spur_gear"]["api_path"] == "simplecadapi.std.gear.make_spur_gear_rsolid"
+    assert by_id["ball_bearing"]["result_kind"] == "assembly"
+    assert by_id["roller_chain_sprocket"]["available"] is True
+
+
+def test_simplecadapi_is_vendored_under_project_src() -> None:
+    import simplecadapi
+
+    assert "/src/simplecadapi/" in str(Path(simplecadapi.__file__).as_posix()) + "/"
+    assert hasattr(simplecadapi.std.fastener, "make_bolt_rsolid")
+    assert hasattr(simplecadapi.std.bearing, "make_ball_bearing_rassembly")
+    assert hasattr(simplecadapi.std.chain, "make_roller_chain_sprocket_rsolid")
+
+
+def test_validate_part_parameters_uses_underlying_signature() -> None:
+    params = validate_part_parameters(
+        "roller_chain_sprocket",
+        {
+            "n_teeth": 12,
+            "chain_pitch": 6.35,
+            "roller_diameter": 3.3,
+            "sprocket_thickness": 3.0,
+        },
+    )
+    assert params["bore_radius"] == 0.0
+    assert params["roller_clearance"] == 0.15
+    with pytest.raises(Exception, match="invalid_parametric_part_parameters"):
+        validate_part_parameters("roller_chain_sprocket", {"n_teeth": 12})
+
+
+def test_dependency_report_marks_sketch_solver_backed_gears() -> None:
+    capability = get_parametric_part_capability("spur_gear")
+    assert "py_slvs" in capability.required_packages
+    if importlib.util.find_spec("py_slvs") is None:
+        assert capability.missing_packages() == ("py_slvs",)
+
+
+def test_make_and_export_available_parametric_sprocket(tmp_path: Path) -> None:
+    shape = make_parametric_part(
+        "roller_chain_sprocket",
+        {
+            "n_teeth": 12,
+            "chain_pitch": 6.35,
+            "roller_diameter": 3.3,
+            "sprocket_thickness": 3.0,
+            "bore_radius": 1.2,
+        },
+    )
+    assert shape.get_volume() > 0
+
+    manifest = export_parametric_part(
+        "roller_chain_sprocket",
+        {
+            "n_teeth": 12,
+            "chain_pitch": 6.35,
+            "roller_diameter": 3.3,
+            "sprocket_thickness": 3.0,
+            "bore_radius": 1.2,
+        },
+        tmp_path,
+    )
+    assert Path(manifest["exported_files"]["step"]).exists()
+    assert Path(manifest["exported_files"]["model"]).exists()
+    assert manifest["geometry_summary"]["volume_mm3"] > 0