1# Check every path through every method of UserList
2
3from collections import UserList
4from test import list_tests
5import unittest
6
7class UserListTest(list_tests.CommonTest):
8    type2test = UserList
9
10    def test_getslice(self):
11        super().test_getslice()
12        l = [0, 1, 2, 3, 4]
13        u = self.type2test(l)
14        for i in range(-3, 6):
15            self.assertEqual(u[:i], l[:i])
16            self.assertEqual(u[i:], l[i:])
17            for j in range(-3, 6):
18                self.assertEqual(u[i:j], l[i:j])
19
20    def test_add_specials(self):
21        u = UserList("spam")
22        u2 = u + "eggs"
23        self.assertEqual(u2, list("spameggs"))
24
25    def test_radd_specials(self):
26        u = UserList("eggs")
27        u2 = "spam" + u
28        self.assertEqual(u2, list("spameggs"))
29        u2 = u.__radd__(UserList("spam"))
30        self.assertEqual(u2, list("spameggs"))
31
32    def test_iadd(self):
33        super().test_iadd()
34        u = [0, 1]
35        u += UserList([0, 1])
36        self.assertEqual(u, [0, 1, 0, 1])
37
38    def test_mixedcmp(self):
39        u = self.type2test([0, 1])
40        self.assertEqual(u, [0, 1])
41        self.assertNotEqual(u, [0])
42        self.assertNotEqual(u, [0, 2])
43
44    def test_mixedadd(self):
45        u = self.type2test([0, 1])
46        self.assertEqual(u + [], u)
47        self.assertEqual(u + [2], [0, 1, 2])
48
49    def test_getitemoverwriteiter(self):
50        # Verify that __getitem__ overrides *are* recognized by __iter__
51        class T(self.type2test):
52            def __getitem__(self, key):
53                return str(key) + '!!!'
54        self.assertEqual(next(iter(T((1,2)))), "0!!!")
55
56    def test_userlist_copy(self):
57        u = self.type2test([6, 8, 1, 9, 1])
58        v = u.copy()
59        self.assertEqual(u, v)
60        self.assertEqual(type(u), type(v))
61
62if __name__ == "__main__":
63    unittest.main()
64