diff --git a/jay_diff.py b/jay_diff.py
index 7a5a06f..eea353f 100644
--- a/jay_diff.py
+++ b/jay_diff.py
@@ -28,79 +28,80 @@ def jay_diff_del(_old, _new):
 	return delta
 
 
-def jay_diff_upd(temp_data, data, add_if_not_exist=False):
-	new_data = {}
-	for k in data.keys():
-		if k in temp_data:
-			if isinstance(data[k], dict):
-				res = jay_diff_upd(temp_data[k], data[k], add_if_not_exist)
+def jay_diff_upd(_old, _new, add_if_not_exist=False):
+	delta = {}
+	for k in _new.keys():
+		if k in _old:
+			if isinstance(_new[k], dict):
+				res = jay_diff_upd(_old[k], _new[k], add_if_not_exist)
 				if len(res.keys()):
-					new_data[k] = res
-			elif data[k] != temp_data[k]:
-				new_data[k] = data[k]
+					delta[k] = res
+			elif _new[k] != _old[k]:
+				delta[k] = _new[k]
 		elif add_if_not_exist:
-			new_data[k] = data[k]
+			delta[k] = _new[k]
 
-	return new_data
+	return delta
 
 
-def jay_diff_upd_add(temp_data, data):
-	return jay_diff_upd(temp_data, data, add_if_not_exist=True)
+def jay_diff_upd_add(_old, _new):
+	return jay_diff_upd(_old, _new, add_if_not_exist=True)
 
 
-def jay_diff_full(data, temp_data, combine_upd_add=False):
+def jay_diff_full(_old, _new, combine_upd_add):
 	diff = {}
 	if combine_upd_add:
-		res = jay_diff_upd_add(data, temp_data)
+		res = jay_diff_upd_add(_old, _new)
 		if len(res.keys()):
 			diff['update_add'] = res
-		res = jay_diff_del(data, temp_data)
+		res = jay_diff_del(_old, _new)
 		if len(res.keys()):
 			diff['delete'] = res
 	else:
-		res = jay_diff_upd(data, temp_data)
+		res = jay_diff_upd(_old, _new)
 		if len(res.keys()):
 			diff['update'] = res
-		res = jay_diff_add(data, temp_data)
+		res = jay_diff_add(_old, _new)
 		if len(res.keys()):
 			diff['add'] = res
-		res = jay_diff_del(data, temp_data)
+		res = jay_diff_del(_old, _new)
 		if len(res.keys()):
 			diff['delete'] = res
 
-		return diff
+	return diff
 
 
-def jay_merge_update(d, u):
-	for k, v in u.items():
+def jay_merge_update(_old, _new):
+	for k, v in _new.items():
 		if isinstance(v, dict):
-			r = jay_merge_update(d.get(k, {}), v)
-			d[k] = r
+			r = jay_merge_update(_old.get(k, {}), v)
+			_old[k] = r
 		else:
-			d[k] = u[k]
-	return d
+			_old[k] = _new[k]
+	return _old
 
 
-def jay_merge_add(d, u):
-	for k, v in u.items():
+def jay_merge_add(_old, _new):
+	for k, v in _new.items():
 		if isinstance(v, dict):
-			if k in d:
-				d[k].update(v)
+			if k in _old:
+				_old[k].update(v)
 			else:
-				d[k] = v
+				_old[k] = v
 		else:
-			d[k] = u[k]
-	return d
+			_old[k] = _new[k]
+	return _old
 
 
-def jay_merge_delete(d, u):
-	for k, v in u.items():
+def jay_merge_delete(_old, _new):
+	for k, v in _new.items():
 		if isinstance(v, dict):
-			jay_merge_delete(d[k], u[k])
+			jay_merge_delete(_old[k], _new[k])
 		else:
-			if k in d:
-				del d[k]
-	return d
+			if k in _old:
+				del _old[k]
+	return _old
+
 
 if __name__ == '__main__':
 
@@ -209,75 +210,149 @@ if __name__ == '__main__':
 	assert diffed == {'c': {'e': 'pepsi', 'h': 'cake'}}
 
 	# ToDo: jay_diff_full
-	diffed = jay_diff_full({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, combine_upd_add=False)
+	combine_upd_add = False
+
+	diffed = jay_diff_full({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, combine_upd_add)
 	assert diffed == {'add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {'update': {'c': 'coke'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add)
 	assert diffed == {'delete': {'d': 'icecream'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'd': 'icecream', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'd': 'icecream', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {'add': {'d': 'icecream'}, 'delete': {'b': 'fries'}, 'update': {'c': 'coke'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {'add': {'b': 'fries'}, 'delete': {'d': 'icecream'}, 'update': {'c': 'coke'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}, {'c': {'f': 'coffee'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}, {'c': {'f': 'coffee'}}, combine_upd_add)
 	assert diffed == {'add': {'c': {'f': 'coffee'}}, 'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {'add': {'b': 'fries'}, 'delete': {'d': 'icecream'}, 'update': {'c': 'coke'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add)
 	assert diffed == {'update': {'c': 'pepsi'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add)
 	assert diffed == {'delete': {'c': 'pepsi'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
 	assert diffed == {'update': {'c': 'coke'}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add)
 	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, combine_upd_add)
 	assert diffed == {'delete': {'c': {'e': 'coke'}}}
 
-	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'coke'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'coke'}}, combine_upd_add)
 	assert diffed == {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes'}, combine_upd_add)
 	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update': {'a': 'hotdog', 'b': 'potatoes'}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi'}}, combine_upd_add)
 	assert diffed == {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, 'update': {'c': {'e': 'pepsi'}}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add)
 	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update': {'a': 'hotdog'}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add)
 	assert diffed == {'update': {'c': {'e': 'pepsi'}}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes', 'd': 'icecream'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes', 'd': 'icecream'}, combine_upd_add)
 	assert diffed == {'add': {'d': 'icecream'}, 'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update': {'a': 'hotdog', 'b': 'potatoes'}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}, 'b':'potatoes'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}, 'b':'potatoes'}, combine_upd_add)
 	assert diffed == {'add': {'c': {'g': 'tea', 'h': 'cake'}}, 'delete': {'a': 'hamburger', 'c': {'f': 'coffee'}}, 'update': {'b': 'potatoes', 'c': {'e': 'pepsi'}}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add)
 	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update': {'a': 'hotdog'}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add=False)
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add)
 	assert diffed == {'update': {'c': {'e': 'pepsi'}}}
 
-	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee', 'h': 'cake'}})
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee', 'h': 'cake'}}, combine_upd_add)
 	assert diffed == {'add': {'c': {'h': 'cake'}}, 'update': {'c': {'e': 'pepsi'}}}
 
+	# ToDo: jay_diff_full
+	combine_upd_add = True
+
+	diffed = jay_diff_full({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, combine_upd_add)
+	assert diffed == {'update_add': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {'update_add': {'c': 'coke'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add)
+	assert diffed == {'delete': {'d': 'icecream'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'd': 'icecream', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {'delete': {'b': 'fries'}, 'update_add': {'c': 'coke', 'd': 'icecream'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {'delete': {'d': 'icecream'}, 'update_add': {'b': 'fries', 'c': 'coke'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}, {'c': {'f': 'coffee'}}, combine_upd_add)
+	assert diffed == {'update_add': {'c': {'f': 'coffee'}}, 'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke'}}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'c': 'pepsi', 'd': 'icecream'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {'delete': {'d': 'icecream'}, 'update_add': {'b': 'fries', 'c': 'coke'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, {'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, combine_upd_add)
+	assert diffed == {'update_add': {'c': 'pepsi'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add)
+	assert diffed == {'delete': {'c': 'pepsi'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': 'pepsi'}, {'a': 'hamburger', 'b': 'fries', 'c': 'coke'}, combine_upd_add)
+	assert diffed == {'update_add': {'c': 'coke'}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries'}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke'}}}
+
+	diffed = jay_diff_full({'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'coke'}}, combine_upd_add)
+	assert diffed == {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes'}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update_add': {'a': 'hotdog', 'b': 'potatoes'}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi'}}, combine_upd_add)
+	assert diffed == {'delete': {'a': 'hamburger', 'b': 'fries', 'c': {'f': 'coffee'}}, 'update_add': {'c': {'e': 'pepsi'}}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update_add': {'a': 'hotdog'}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add)
+	assert diffed == {'update_add': {'c': {'e': 'pepsi'}}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'potatoes', 'd': 'icecream'}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update_add': {'a': 'hotdog', 'b': 'potatoes', 'd': 'icecream'}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}, 'b':'potatoes'}, combine_upd_add)
+	assert diffed == {'delete': {'a': 'hamburger', 'c': {'f': 'coffee'}}, 'update_add': {'b': 'potatoes', 'c': {'e': 'pepsi', 'g': 'tea', 'h': 'cake'}}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hotdog', 'b':'fries'}, combine_upd_add)
+	assert diffed == {'delete': {'c': {'e': 'coke', 'f': 'coffee'}}, 'update_add': {'a': 'hotdog'}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee'}}, combine_upd_add)
+	assert diffed == {'update_add': {'c': {'e': 'pepsi'}}}
+
+	diffed = jay_diff_full({'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}, {'a':'hamburger', 'b':'fries', 'c': {'e': 'pepsi', 'f': 'coffee', 'h': 'cake'}}, combine_upd_add)
+	assert diffed == {'update_add': {'c': {'e': 'pepsi', 'h': 'cake'}}}
+
 	# Merge
 	merged = jay_merge_add({}, {'a': 'hamburger', 'b': 'fries', 'c': {'e': 'coke', 'f': 'coffee'}})
 	assert merged == {'a':'hamburger', 'b':'fries', 'c': {'e': 'coke', 'f': 'coffee'}}