Пример #1
0
    def test_size(self):
        tree = Bst()
        self.assertEquals(tree.size, 0)
        self.assertEquals(tree.size, tree.getsize())

        # Set tree size to arbitrary number
        ARBITRARY_SIZE = 5
        tree.size = ARBITRARY_SIZE
        self.assertEquals(tree.size, ARBITRARY_SIZE)
        self.assertEquals(tree.size, tree.getsize())

        # Adding should increment size
        tree = balanced_tree()
        self.assertEquals(tree.getsize(), 7)
        FAR_RIGHT_DATA = 100
        tree.add(FAR_RIGHT_DATA)
        self.assertEquals(tree.getsize(), 8)

        # Removing should decrement size
        tree = balanced_tree()
        self.assertEquals(tree.getsize(), 7)
        tree.remove(ROOT_DATA)
        self.assertEquals(tree.getsize(), 6)
Пример #2
0
            def remove_one_child_root():
                """Removing root in a tree where the root has only one child"""
                tree = Bst()
                tree.add(ROOT_DATA)
                tree.add(LEFT_DATA)
                self.assertFalse(tree.isempty())
                self.assertEquals(tree.getsize(), 2)
                self.assertEquals(tree.root.getleft().getdata(), LEFT_DATA)

                val = tree.remove(ROOT_DATA)

                self.assertFalse(tree.isempty())
                self.assertEquals(tree.getsize(), 1)
                self.assertEquals(val, ROOT_DATA)
                self.assertIsNotNone(tree.root)
                self.assertNotEquals(tree.root.getdata(), ROOT_DATA)
                self.assertEquals(tree.root, Node(LEFT_DATA))