45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
import unittest
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################################################################################
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# Solution
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################################################################################
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def find_unique_delivery_id(xs):
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a = 0
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for x in xs:
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a ^= x
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return a
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################################################################################
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# Tests
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################################################################################
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class Test(unittest.TestCase):
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def test_one_drone(self):
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actual = find_unique_delivery_id([1])
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expected = 1
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self.assertEqual(actual, expected)
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def test_unique_id_comes_first(self):
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actual = find_unique_delivery_id([1, 2, 2])
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expected = 1
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self.assertEqual(actual, expected)
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def test_unique_id_comes_last(self):
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actual = find_unique_delivery_id([3, 3, 2, 2, 1])
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expected = 1
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self.assertEqual(actual, expected)
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def test_unique_id_in_middle(self):
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actual = find_unique_delivery_id([3, 2, 1, 2, 3])
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expected = 1
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self.assertEqual(actual, expected)
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def test_many_drones(self):
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actual = find_unique_delivery_id(
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[2, 5, 4, 8, 6, 3, 1, 4, 2, 3, 6, 5, 1])
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expected = 8
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self.assertEqual(actual, expected)
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unittest.main(verbosity=2)
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