feat: add native road compiler provider

blender/tests/test_pure.py

@@ -30,7 +30,7 @@ from osmassets.geom import (
     sample_tree_row,
     signed_polygon_area,
 )
-from osmassets.catalog import ROAD_LAYERS
+from osmassets.catalog import NATIVE_ROAD_LAYERS, ROAD_LAYERS
 from osmassets.osm import Projector, parse_height, parse_osm, tags
 
 
@@ -46,6 +46,24 @@ class RoadLayerCatalogTest(unittest.TestCase):
         self.assertNotEqual(layers["road_surface"]["z"],
                             layers["intersection_surface"]["z"])
 
+    def test_native_provider_maps_to_existing_material_layers(self):
+        layers = {layer["id"] for layer in ROAD_LAYERS}
+        self.assertEqual(
+            [(entry["source"], entry["material_layer"])
+             for entry in NATIVE_ROAD_LAYERS],
+            [("road_surface", "road_surface"),
+             ("intersection_surface", "intersection_surface"),
+             ("sidewalk_surface", "sidewalks")])
+        self.assertTrue(all(entry["material_layer"] in layers
+                            for entry in NATIVE_ROAD_LAYERS))
+
+    def test_cesium_export_keeps_signal_assets_optional(self):
+        exporter = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                                "..", "export_cesium.py")
+        with open(exporter, encoding="utf-8") as handle:
+            source = handle.read()
+        self.assertIn('if not args.get(key):\n            continue', source)
+
 
 class GeometryRingsTest(unittest.TestCase):
     def test_polygon_keeps_only_the_exterior_ring(self):