better basic example

tests/test_basics.py

@@ -227,6 +227,27 @@ class MaterialAssignTests(unittest.TestCase):
             self.module.assign(actor, "red")
 
 
+class NaniteTests(unittest.TestCase):
+    def setUp(self):
+        self.unreal = MagicMock()
+        self.module = load(self.unreal, "assets.py")
+        self.mesh = MagicMock()
+        self.settings = self.mesh.get_editor_property.return_value
+        self.subsystem = self.unreal.get_editor_subsystem.return_value
+
+    def test_enabled_nanite_is_disabled_and_saved(self):
+        self.settings.enabled = True
+        self.module._disable_nanite(self.mesh)
+        self.assertFalse(self.settings.enabled)
+        self.subsystem.set_nanite_settings.assert_called_once_with(self.mesh, self.settings, True)
+        self.unreal.EditorAssetLibrary.save_loaded_asset.assert_called_once_with(self.mesh)
+
+    def test_disabled_mesh_is_not_rebuilt(self):
+        self.settings.enabled = False
+        self.module._disable_nanite(self.mesh)
+        self.subsystem.set_nanite_settings.assert_not_called()
+
+
 class RendererAudioTests(unittest.TestCase):
     def test_audio_requires_mp4(self):
         module = load(MagicMock(), "render.py")