f53e2ef08b
* Implement checks for messages being raised with exceptions (Fixes #1080) * Add self.assertRaisesWithMessage method to relevant exercise tests - Uses self.assertRaisesRegex - Checks only for the presence of a message, not content * Add meaningful messages to failing examples * octal: Switch to using a context manager for exception tests * Add note regarding error messages to the insert * simple-linked-list: Move hints.md to correct location * simple-cipher: Remove extra whitespace from lines * collatz-conjecture: Update hints.md * Regenerate README to include exceptions section
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
"""Tests for the binary exercise
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Implementation note:
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If the argument to parse_binary isn't a valid binary number the
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function should raise a ValueError with a meaningful error message.
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"""
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import unittest
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from binary import parse_binary
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class BinaryTests(unittest.TestCase):
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def test_binary_1_is_decimal_1(self):
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self.assertEqual(parse_binary("1"), 1)
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def test_binary_10_is_decimal_2(self):
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self.assertEqual(parse_binary("10"), 2)
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def test_binary_11_is_decimal_3(self):
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self.assertEqual(parse_binary("11"), 3)
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def test_binary_100_is_decimal_4(self):
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self.assertEqual(parse_binary("100"), 4)
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def test_binary_1001_is_decimal_9(self):
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self.assertEqual(parse_binary("1001"), 9)
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def test_binary_11010_is_decimal_26(self):
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self.assertEqual(parse_binary("11010"), 26)
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def test_binary_10001101000_is_decimal_1128(self):
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self.assertEqual(parse_binary("10001101000"), 1128)
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def test_invalid_binary_text_only(self):
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with self.assertRaisesWithMessage(ValueError):
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parse_binary("carrot")
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def test_invalid_binary_number_not_base2(self):
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with self.assertRaisesWithMessage(ValueError):
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parse_binary("102011")
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def test_invalid_binary_numbers_with_text(self):
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with self.assertRaisesWithMessage(ValueError):
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parse_binary("10nope")
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def test_invalid_binary_text_with_numbers(self):
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with self.assertRaisesWithMessage(ValueError):
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parse_binary("nope10")
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# Utility functions
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def setUp(self):
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try:
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self.assertRaisesRegex = self.assertRaisesRegexp
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except AttributeError:
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pass
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def assertRaisesWithMessage(self, exception):
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return self.assertRaisesRegex(exception, r".+")
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if __name__ == '__main__':
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unittest.main()
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