def test_will_return_parent_when_child_when_given_type_id(self):
n0 = BuildDependencyNode(self.class0)
n1 = BuildDependencyNode(self.class1)
n0.add_child(n1)
p = n0.find_parent(n1.cls.type_id)
self.assertIs(p, n0)
def test_will_return_None_when_root(self):
n0 = BuildDependencyNode(self.class0)
n1 = BuildDependencyNode(self.class1)
n0.add_child(n1)
p = n0.find_parent(n1)
self.assertIs(p, n0)