Layers: Scene copy should copy selection as well.

We need this for Depsgraph, otherwise CoW scene will have different selection properties.

tests/python/render_layer/CMakeLists.txt

@@ -169,4 +169,5 @@ RENDER_LAYER_TEST(scene_copy_a)
 RENDER_LAYER_TEST(scene_copy_b)
 RENDER_LAYER_TEST(scene_copy_c)
 RENDER_LAYER_TEST(scene_copy_d)
+RENDER_LAYER_TEST(scene_copy_e)
 RENDER_LAYER_TEST(scene_write_read)

tests/python/render_layer/test_scene_copy_e.py

@@ -0,0 +1,52 @@
+# ############################################################
+# Importing - Same For All Render Layer Tests
+# ############################################################
+
+import unittest
+import os
+import sys
+
+from render_layer_common import *
+
+
+# ############################################################
+# Testing
+# ############################################################
+
+class UnitTesting(RenderLayerTesting):
+    def test_shared_layer_collections_copy_full(self):
+        """
+        See if scene copying 'FULL_COPY' is working for scene collections
+        with a shared object
+        """
+        import os
+        import bpy
+
+        scene = bpy.context.scene
+        layer = bpy.context.render_layer
+
+        original_cube = layer.objects.get('Cube')
+        original_cube.select_set('SELECT')
+        self.assertTrue(original_cube.select_get())
+
+        bpy.ops.scene.new(type='FULL_COPY')
+        new_layer = bpy.context.render_layer
+
+        self.assertNotEqual(layer, new_layer)
+        new_cube = new_layer.objects.get('Cube.001')
+        self.assertNotEqual(original_cube, new_cube)
+        self.assertTrue(new_cube.select_get())
+
+
+# ############################################################
+# Main - Same For All Render Layer Tests
+# ############################################################
+
+if __name__ == '__main__':
+    import sys
+
+    extra_arguments = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
+    sys.argv = [__file__] + (sys.argv[sys.argv.index("--") + 2:] if "--" in sys.argv else [])
+
+    UnitTesting._extra_arguments = extra_arguments
+    unittest.main()