def test_parent_changed(self):
"""Test if objects have the correct parent set after having it changed.
"""
old_parent = Node(None)
new_parent = Node(None)
child = Node(old_parent)
child.set_parent(new_parent)
self.assertIs(child.parent(), new_parent)
def test_no_parent(self):
"""Test that game objects with no parent return None for their parent.
"""
obj = Node(None)
self.assertIs(obj.parent(), None)
def test_parent(self):
"""Test if objects have the correct parent set upon instantiation."""
parent = Node(None)
child = Node(parent)
self.assertIs(child.parent(), parent)