def test_add_child_with_lower_level(self):
parent = Section(level=1,
start=0,
end=100,
data={},
title="Parent Title")
chapter = Mock()
parent.chapter = chapter
child = Section(level=3,
start=10,
end=90,
data={},
title="Child Title")
parent.add_child(child)
self.assertIn(child, parent.children)
self.assertIs(parent.chapter, child.chapter)
self.assertIs(child.parent, parent)
def test_add_child_with_higher_level(self):
parent = Section(level=2,
start=0,
end=100,
data={},
title="Parent Title")
chapter = Mock()
parent.chapter = chapter
child = Section(level=1,
start=110,
end=190,
data={},
title="Child Title")
with self.assertRaises(MetaHierarchyError):
parent.add_child(child)
self.assertNotIn(child, parent.children)
self.assertIsNone(child.chapter)
self.assertIsNone(child.parent)