2015-08-15 07:30:09 +08:00
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from nose.tools import assert_equal
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2016-06-26 10:08:54 +08:00
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from nose.tools import raises
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2015-08-15 07:30:09 +08:00
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class TestBstValidate(object):
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2016-06-26 10:08:54 +08:00
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@raises(Exception)
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def test_bst_validate_empty(self):
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validate_bst(None)
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2015-08-15 07:30:09 +08:00
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def test_bst_validate(self):
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2016-08-30 18:06:58 +08:00
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bst = BstValidate(Node(5))
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bst.insert(8)
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bst.insert(5)
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bst.insert(6)
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bst.insert(4)
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bst.insert(7)
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assert_equal(bst.validate(), True)
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bst = BstValidate(Node(5))
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2015-08-15 07:30:09 +08:00
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left = Node(5)
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right = Node(8)
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invalid = Node(20)
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2016-08-30 18:06:58 +08:00
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bst.root.left = left
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bst.root.right = right
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bst.root.left.right = invalid
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assert_equal(bst.validate(), False)
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2015-08-15 07:30:09 +08:00
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print('Success: test_bst_validate')
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def main():
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test = TestBstValidate()
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2016-06-26 10:08:54 +08:00
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test.test_bst_validate_empty()
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2015-08-15 07:30:09 +08:00
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test.test_bst_validate()
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if __name__ == '__main__':
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main()
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