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Issue #10516: adding list.clear() and list.copy() methods

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This commit is contained in:
Eli Bendersky 2011-02-25 05:47:53 +00:00
parent 3108f98319
commit cbbaa96036
6 changed files with 81 additions and 2 deletions
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42
Lib/test/list_tests.py
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@ -425,6 +425,48 @@ class CommonTest(seq_tests.CommonTest):
self.assertRaises(TypeError, u.reverse, 42)
def test_clear(self):
u = self.type2test([2, 3, 4])
u.clear()
self.assertEqual(u, [])
u = self.type2test([])
u.clear()
self.assertEqual(u, [])
u = self.type2test([])
u.append(1)
u.clear()
u.append(2)
self.assertEqual(u, [2])
self.assertRaises(TypeError, u.clear, None)
def test_copy(self):
u = self.type2test([1, 2, 3])
v = u.copy()
self.assertEqual(v, [1, 2, 3])
u = self.type2test([])
v = u.copy()
self.assertEqual(v, [])
# test that it's indeed a copy and not a reference
u = self.type2test(['a', 'b'])
v = u.copy()
v.append('i')
self.assertEqual(u, ['a', 'b'])
self.assertEqual(v, u + ['i'])
# test that it's a shallow, not a deep copy
u = self.type2test([1, 2, [3, 4], 5])
v = u.copy()
v[2].append(666)
self.assertEqual(u, [1, 2, [3, 4, 666], 5])
self.assertEqual(u, v)
self.assertRaises(TypeError, u.copy, None)
def test_sort(self):
u = self.type2test([1, 0])
u.sort()