def test_reparent(self):
tree = Tree()
n1 = 'n1'
n2 = 'n2'
n3 = 'n3'
n4 = 'n4'
n5 = 'n5'
tree.add(n1)
tree.add(n2)
tree.add(n3)
tree.add(n4, parent=n2)
tree.add(n5, parent=n4)
assert tree.nodes == [n1, n2, n4, n5, n3], tree.nodes
tree.reparent(n4, parent=n1, index=0)
assert tree.nodes == [n1, n4, n5, n2, n3], tree.nodes
assert tree.get_children(n2) == [], tree.get_children(n2)
assert tree.get_children(n1) == [n4], tree.get_children(n1)
assert tree.get_children(n4) == [n5], tree.get_children(n4)
tree.reparent(n4, parent=None, index=0)
assert tree.nodes == [n4, n5, n1, n2, n3], tree.nodes
