aa3e379ff1
* Additional sweep to update Python versions and supported Python versions. * Fixed requirements and CONTRIBUTING. * Trying a different line skip to see if it fixes CI. CI is failing on test file generation again. * Once again re-rendering tests to see if it fixes CI. [no important files changed]
60 lines
2.4 KiB
Python
60 lines
2.4 KiB
Python
# These tests are auto-generated with test data from:
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# https://github.com/exercism/problem-specifications/tree/main/exercises/change/canonical-data.json
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# File last updated on 2023-07-16
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import unittest
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from change import (
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find_fewest_coins,
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)
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class ChangeTest(unittest.TestCase):
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def test_change_for_1_cent(self):
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self.assertEqual(find_fewest_coins([1, 5, 10, 25], 1), [1])
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def test_single_coin_change(self):
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self.assertEqual(find_fewest_coins([1, 5, 10, 25, 100], 25), [25])
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def test_multiple_coin_change(self):
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self.assertEqual(find_fewest_coins([1, 5, 10, 25, 100], 15), [5, 10])
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def test_change_with_lilliputian_coins(self):
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self.assertEqual(find_fewest_coins([1, 4, 15, 20, 50], 23), [4, 4, 15])
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def test_change_with_lower_elbonia_coins(self):
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self.assertEqual(find_fewest_coins([1, 5, 10, 21, 25], 63), [21, 21, 21])
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def test_large_target_values(self):
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self.assertEqual(
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find_fewest_coins([1, 2, 5, 10, 20, 50, 100], 999),
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[2, 2, 5, 20, 20, 50, 100, 100, 100, 100, 100, 100, 100, 100, 100],
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)
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def test_possible_change_without_unit_coins_available(self):
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self.assertEqual(find_fewest_coins([2, 5, 10, 20, 50], 21), [2, 2, 2, 5, 10])
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def test_another_possible_change_without_unit_coins_available(self):
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self.assertEqual(find_fewest_coins([4, 5], 27), [4, 4, 4, 5, 5, 5])
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def test_no_coins_make_0_change(self):
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self.assertEqual(find_fewest_coins([1, 5, 10, 21, 25], 0), [])
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def test_error_testing_for_change_smaller_than_the_smallest_of_coins(self):
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with self.assertRaises(ValueError) as err:
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find_fewest_coins([5, 10], 3)
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self.assertEqual(type(err.exception), ValueError)
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self.assertEqual(err.exception.args[0], "can't make target with given coins")
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def test_error_if_no_combination_can_add_up_to_target(self):
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with self.assertRaises(ValueError) as err:
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find_fewest_coins([5, 10], 94)
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self.assertEqual(type(err.exception), ValueError)
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self.assertEqual(err.exception.args[0], "can't make target with given coins")
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def test_cannot_find_negative_change_values(self):
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with self.assertRaises(ValueError) as err:
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find_fewest_coins([1, 2, 5], -5)
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self.assertEqual(type(err.exception), ValueError)
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self.assertEqual(err.exception.args[0], "target can't be negative")
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