Joakim Persson
43 lines
2.1 KiB
Python
43 lines
2.1 KiB
Python
import unittest
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from hanoi import hanoi # Assuming the code is in a file named hanoi.py
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class TestHanoi(unittest.TestCase):
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def test_hanoi_with_one_disk(self):
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with self.subTest(n=1, source='A', auxiliary='B', target='C'):
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expected_output = "Move disk 1 from A to C\n"
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with unittest.mock.patch('sys.stdout', new=io.StringIO()) as mock_stdout:
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hanoi(1, 'A', 'B', 'C')
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self.assertEqual(mock_stdout.getvalue(), expected_output)
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def test_hanoi_with_two_disks(self):
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with self.subTest(n=2, source='A', auxiliary='B', target='C'):
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expected_output = "Move disk 1 from A to B\nMove disk 2 from A to C\nMove disk 1 from B to C\n"
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with unittest.mock.patch('sys.stdout', new=io.StringIO()) as mock_stdout:
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hanoi(2, 'A', 'B', 'C')
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self.assertEqual(mock_stdout.getvalue(), expected_output)
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def test_hanoi_with_three_disks(self):
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with self.subTest(n=3, source='A', auxiliary='B', target='C'):
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expected_output = "Move disk 1 from A to C\nMove disk 2 from A to B\nMove disk 1 from C to B\nMove disk 3 from A to C\nMove disk 1 from B to A\nMove disk 2 from B to C\nMove disk 1 from A to C\n"
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with unittest.mock.patch('sys.stdout', new=io.StringIO()) as mock_stdout:
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hanoi(3, 'A', 'B', 'C')
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self.assertEqual(mock_stdout.getvalue(), expected_output)
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def test_hanoi_with_zero_disks(self):
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with self.subTest(n=0, source='A', auxiliary='B', target='C'):
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expected_output = ""
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with unittest.mock.patch('sys.stdout', new=io.StringIO()) as mock_stdout:
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hanoi(0, 'A', 'B', 'C')
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self.assertEqual(mock_stdout.getvalue(), expected_output)
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def test_hanoi_with_negative_disks(self):
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with self.subTest(n=-1, source='A', auxiliary='B', target='C'):
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expected_output = ""
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with unittest.mock.patch('sys.stdout', new=io.StringIO()) as mock_stdout:
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hanoi(-1, 'A', 'B', 'C')
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self.assertEqual(mock_stdout.getvalue(), expected_output)
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if __name__ == "__main__":
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unittest.main()
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