Issue #10516: adding list.clear() and list.copy() methods
diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
index e3a7845..89ea40f 100644
--- a/Lib/test/list_tests.py
+++ b/Lib/test/list_tests.py
@@ -425,6 +425,48 @@
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()