Fix collection visibility evaluation

Collection       A [disabled]
 -> Collection   B
   -> Collection C
     -> object

Object should be invisible, but it is not. Reported by Antonio Vazquez.

Bug introduced on: 1f5106de61

tests/python/view_layer/CMakeLists.txt

@@ -81,6 +81,7 @@ VIEW_LAYER_TEST(evaluation_visibility_f)
 VIEW_LAYER_TEST(evaluation_visibility_g)
 VIEW_LAYER_TEST(evaluation_visibility_h)
 VIEW_LAYER_TEST(evaluation_visibility_i)
+VIEW_LAYER_TEST(evaluation_visibility_j)
 VIEW_LAYER_TEST(evaluation_selectability_a)
 VIEW_LAYER_TEST(evaluation_selectability_b)
 VIEW_LAYER_TEST(evaluation_selectability_c)

tests/python/view_layer/test_evaluation_visibility_j.py

@@ -0,0 +1,61 @@
+# ############################################################
+# Importing - Same For All Render Layer Tests
+# ############################################################
+
+import unittest
+import os
+import sys
+
+from view_layer_common import *
+
+
+# ############################################################
+# Testing
+# ############################################################
+
+class UnitTesting(ViewLayerTesting):
+    def test_visibility_nested(self):
+        """
+        See if the depsgraph evaluation is correct
+        """
+        import bpy
+
+        # delete all initial objects
+        while bpy.data.objects:
+            bpy.data.objects.remove(bpy.data.objects[0])
+
+        # delete all initial collections
+        scene = bpy.context.scene
+        master_collection = scene.master_collection
+        while master_collection.collections:
+            master_collection.collections.remove(master_collection.collections[0])
+
+        collection_parent = master_collection.collections.new('parent')
+        collection_nested = collection_parent.collections.new('child linked')
+        ob = bpy.data.objects.new('An Empty', None)
+        collection_nested.objects.link(ob)
+
+        layer_collection = bpy.context.view_layer.collections.link(master_collection)
+        self.assertTrue(layer_collection.enabled)
+
+        # Update depsgraph.
+        scene.update()
+
+        self.assertTrue(ob.visible_get())
+
+        layer_collection.enabled = False
+        self.assertFalse(layer_collection.enabled)
+
+        # Update depsgraph.
+        scene.update()
+
+        self.assertFalse(ob.visible_get())
+
+
+# ############################################################
+# Main - Same For All Render Layer Tests
+# ############################################################
+
+if __name__ == '__main__':
+    UnitTesting._extra_arguments = setup_extra_arguments(__file__)
+    unittest.main()