1 files changed, 113 insertions, 0 deletions
diff --git a/tests/python/view_layer/test_layer_syncing.py b/tests/python/view_layer/test_layer_syncing.py
new file mode 100644
index 00000000000..d8175c4850f
--- /dev/null
+++ b/tests/python/view_layer/test_layer_syncing.py
@@ -0,0 +1,113 @@
+# ############################################################
+# Importing - Same For All Render Layer Tests
+# ############################################################
+
+import unittest
+import os
+import sys
+
+from view_layer_common import *
+
+
+# ############################################################
+# Testing
+# ############################################################
+
+class UnitTesting(ViewLayerTesting):
+    def do_syncing(self, filepath_json, unlink_mode):
+        import bpy
+        import os
+        import tempfile
+        import filecmp
+
+        ROOT = self.get_root()
+        with tempfile.TemporaryDirectory() as dirpath:
+            filepath_layers = os.path.join(ROOT, 'layers.blend')
+
+            # open file
+            bpy.ops.wm.open_mainfile('EXEC_DEFAULT', filepath=filepath_layers)
+            self.rename_collections()
+
+            # create sub-collections
+            three_b = bpy.data.objects.get('T.3b')
+            three_c = bpy.data.objects.get('T.3c')
+            three_d = bpy.data.objects.get('T.3d')
+
+            scene = bpy.context.scene
+
+            subzero = scene.master_collection.collections['1'].collections.new('sub-zero')
+            scorpion = scene.master_collection.collections['1'].collections.new('scorpion')
+
+            # test linking sync
+            subzero.objects.link(three_b)
+            scorpion.objects.link(three_c)
+
+            # test unlinking sync
+            if unlink_mode in {'OBJECT', 'COLLECTION'}:
+                scorpion.objects.link(three_d)
+                scorpion.objects.unlink(three_d)
+
+            if unlink_mode == 'COLLECTION':
+                scorpion.objects.link(three_d)
+                scene.master_collection.collections['1'].collections.remove(subzero)
+                scene.master_collection.collections['1'].collections.remove(scorpion)
+
+            # save file
+            filepath_nested = os.path.join(dirpath, 'nested.blend')
+            bpy.ops.wm.save_mainfile('EXEC_DEFAULT', filepath=filepath_nested)
+
+            # get the generated json
+            datas = query_scene(filepath_nested, 'Main', (get_scene_collections, get_layers))
+            self.assertTrue(datas, "Data is not valid")
+
+            filepath_nested_json = os.path.join(dirpath, "nested.json")
+            with open(filepath_nested_json, "w") as f:
+                for data in datas:
+                    f.write(dump(data))
+
+            self.assertTrue(compare_files(
+                filepath_nested_json,
+                filepath_json,
+                ),
+                "Scene dump files differ")
+
+    def test_syncing_link(self):
+        """
+        See if scene collections and layer collections are in sync
+        when we create new subcollections and link new objects
+        """
+        import os
+        ROOT = self.get_root()
+        filepath_json = os.path.join(ROOT, 'layers_nested.json')
+        self.do_syncing(filepath_json, 'NONE')
+
+    def test_syncing_unlink_object(self):
+        """
+        See if scene collections and layer collections are in sync
+        when we create new subcollections, link new objects and unlink
+        some.
+        """
+        import os
+        ROOT = self.get_root()
+        filepath_json = os.path.join(ROOT, 'layers_nested.json')
+        self.do_syncing(filepath_json, 'OBJECT')
+
+    def test_syncing_unlink_collection(self):
+        """
+        See if scene collections and layer collections are in sync
+        when we create new subcollections, link new objects and unlink full collections
+        some.
+        """
+        import os
+        ROOT = self.get_root()
+        filepath_json = os.path.join(ROOT, 'layers.json')
+        self.do_syncing(filepath_json, 'COLLECTION')
+
+
+# ############################################################
+# Main - Same For All Render Layer Tests
+# ############################################################
+
+if __name__ == '__main__':
+    UnitTesting._extra_arguments = setup_extra_arguments(__file__)
+    unittest.main()