| import unittest |
| from unittest.util import safe_repr, sorted_list_difference, unorderable_list_difference |
| |
| |
| class TestUtil(unittest.TestCase): |
| def test_safe_repr(self): |
| class RaisingRepr: |
| def __repr__(self): |
| raise ValueError("Invalid repr()") |
| |
| class LongRepr: |
| def __repr__(self): |
| return 'x' * 100 |
| |
| safe_repr(RaisingRepr()) |
| self.assertEqual(safe_repr('foo'), "'foo'") |
| self.assertEqual(safe_repr(LongRepr(), short=True), 'x'*80 + ' [truncated]...') |
| |
| def test_sorted_list_difference(self): |
| self.assertEqual(sorted_list_difference([], []), ([], [])) |
| self.assertEqual(sorted_list_difference([1, 2], [2, 3]), ([1], [3])) |
| self.assertEqual(sorted_list_difference([1, 2], [1, 3]), ([2], [3])) |
| self.assertEqual(sorted_list_difference([1, 1, 1], [1, 2, 3]), ([], [2, 3])) |
| self.assertEqual(sorted_list_difference([4], [1, 2, 3, 4]), ([], [1, 2, 3])) |
| self.assertEqual(sorted_list_difference([1, 1], [2]), ([1], [2])) |
| self.assertEqual(sorted_list_difference([2], [1, 1]), ([2], [1])) |
| self.assertEqual(sorted_list_difference([1, 2], [1, 1]), ([2], [])) |
| |
| def test_sorted_list_difference_tail_deduplication(self): |
| # Tail deduplication when one list is exhausted before the other. |
| # These exercise the except-IndexError path in sorted_list_difference. |
| self.assertEqual(sorted_list_difference([], [0, 0]), ([], [0])) |
| self.assertEqual(sorted_list_difference([0, 0], []), ([0], [])) |
| self.assertEqual(sorted_list_difference([], [1, 1, 2, 2]), ([], [1, 2])) |
| self.assertEqual(sorted_list_difference([1, 1, 2, 2], []), ([1, 2], [])) |
| # One list exhausts mid-way, leaving duplicated tail in the other. |
| self.assertEqual(sorted_list_difference([1], [1, 2, 2, 3, 3]), ([], [2, 3])) |
| self.assertEqual(sorted_list_difference([1, 2, 2, 3, 3], [1]), ([2, 3], [])) |
| |
| def test_sorted_list_difference_strings(self): |
| self.assertEqual( |
| sorted_list_difference(['a', 'b'], ['b', 'c']), |
| (['a'], ['c'])) |
| self.assertEqual( |
| sorted_list_difference([], ['a', 'a', 'b']), |
| ([], ['a', 'b'])) |
| self.assertEqual( |
| sorted_list_difference(['a', 'a', 'b'], []), |
| (['a', 'b'], [])) |
| |
| def test_sorted_list_difference_unhashable(self): |
| self.assertEqual( |
| sorted_list_difference([[1], [2]], [[2], [3]]), |
| ([[1]], [[3]])) |
| self.assertEqual( |
| sorted_list_difference([], [[0], [0]]), |
| ([], [[0]])) |
| self.assertEqual( |
| sorted_list_difference([[0], [0]], []), |
| ([[0]], [])) |
| |
| def test_unorderable_list_difference(self): |
| self.assertEqual(unorderable_list_difference([], []), ([], [])) |
| self.assertEqual(unorderable_list_difference([1, 2], []), ([2, 1], [])) |
| self.assertEqual(unorderable_list_difference([], [1, 2]), ([], [1, 2])) |
| self.assertEqual(unorderable_list_difference([1, 2], [1, 3]), ([2], [3])) |
