Add Chromium-only Blender WebEngine parity work

blender-5.2.0/tests/python/bl_reorder.py

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+# SPDX-FileCopyrightText: 2022 Blender Authors
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# ./blender.bin --background --python tests/python/bl_pyapi_text.py -- --verbose
+import bpy
+import unittest
+
+
+class TestMeshSpatialOrganization(unittest.TestCase):
+
+    def setUp(self):
+        bpy.ops.object.select_all(action='SELECT')
+        bpy.ops.object.delete(use_global=False)
+        if bpy.context.mode != 'OBJECT':
+            bpy.ops.object.mode_set(mode='OBJECT')
+
+    def tearDown(self):
+        bpy.ops.object.select_all(action='SELECT')
+        bpy.ops.object.delete(use_global=False)
+
+    def create_subdivided_plane(self, subdivisions):
+        bpy.ops.mesh.primitive_plane_add(size=2, location=(0, 0, 0))
+        plane = bpy.context.active_object
+        bpy.ops.object.mode_set(mode='EDIT')
+        bpy.ops.mesh.select_all(action='SELECT')
+        bpy.ops.mesh.subdivide(number_cuts=subdivisions, smoothness=0.0)
+        bpy.ops.object.mode_set(mode='OBJECT')
+        return plane
+
+    def get_vertex_data(self, obj):
+        mesh = obj.data
+        vertices = [(v.co.x, v.co.y, v.co.z) for v in mesh.vertices]
+        return {
+            'vertices': vertices,
+            'vertex_count': len(vertices)
+        }
+
+    def create_reference_mesh(self, source_obj):
+        """Create a reference copy of the mesh for comparison"""
+        bpy.context.view_layer.objects.active = source_obj
+        source_obj.select_set(True)
+        bpy.ops.object.duplicate()
+        reference_obj = bpy.context.active_object
+        reference_obj.name = "reference_mesh"
+        return reference_obj
+
+    def test_spatial_organization_changes_vertex_order(self):
+        plane = self.create_subdivided_plane(subdivisions=50)
+        initial_data = self.get_vertex_data(plane)
+        bpy.ops.mesh.reorder_vertices_spatial()
+        final_data = self.get_vertex_data(plane)
+        self.assertEqual(initial_data['vertex_count'], final_data['vertex_count'])
+        vertices_changed = initial_data['vertices'] != final_data['vertices']
+        self.assertTrue(vertices_changed)
+
+    def test_spatial_organization_preserves_topology(self):
+        plane = self.create_subdivided_plane(subdivisions=50)
+        reference_plane = self.create_reference_mesh(plane)
+        bpy.ops.mesh.reorder_vertices_spatial()
+
+        comparison_result = plane.data.unit_test_compare(mesh=reference_plane.data)
+        self.assertEqual(comparison_result, "The geometries are the same up to a change of indices")
+
+
+if __name__ == '__main__':
+    import sys
+    sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else [])
+    unittest.main()