| # Check every path through every method of UserList |
| |
| from collections import UserList |
| from test import list_tests |
| from test import support |
| import unittest |
| |
| |
| class UserListSubclass(UserList): |
| pass |
| |
| class UserListSubclass2(UserList): |
| pass |
| |
| |
| class UserListTest(list_tests.CommonTest): |
| type2test = UserList |
| |
| def test_data(self): |
| u = UserList() |
| self.assertEqual(u.data, []) |
| self.assertIs(type(u.data), list) |
| a = [1, 2] |
| u = UserList(a) |
| self.assertEqual(u.data, a) |
| self.assertIsNot(u.data, a) |
| self.assertIs(type(u.data), list) |
| u = UserList(u) |
| self.assertEqual(u.data, a) |
| self.assertIs(type(u.data), list) |
| u = UserList("spam") |
| self.assertEqual(u.data, list("spam")) |
| self.assertIs(type(u.data), list) |
| |
| def test_getslice(self): |
| super().test_getslice() |
| l = [0, 1, 2, 3, 4] |
| u = self.type2test(l) |
| for i in range(-3, 6): |
| self.assertEqual(u[:i], l[:i]) |
| self.assertEqual(u[i:], l[i:]) |
| for j in range(-3, 6): |
| self.assertEqual(u[i:j], l[i:j]) |
| |
| def test_slice_type(self): |
| l = [0, 1, 2, 3, 4] |
| u = UserList(l) |
| self.assertIsInstance(u[:], u.__class__) |
| self.assertEqual(u[:],u) |
| |
| def test_mixed_add(self): |
| for t in UserList, list, str, tuple, iter: |
| with self.subTest(t.__name__): |
| u = UserList("spam") + t("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| |
| u = t("spam") + UserList("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| |
| u = UserList("spam") + UserListSubclass("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| |
| u = UserListSubclass("spam") + UserList("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| |
| u = UserListSubclass("spam") + UserListSubclass2("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| |
| u2 = UserList("eggs").__radd__(UserList("spam")) |
| self.assertEqual(u2, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| |
| u2 = UserListSubclass("eggs").__radd__(UserListSubclass2("spam")) |
| self.assertEqual(u2, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| |
| def test_mixed_iadd(self): |
| for t in UserList, list, str, tuple, iter: |
| with self.subTest(t.__name__): |
| u = u2 = UserList("spam") |
| u += t("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| self.assertIs(u, u2) |
| |
| u = t("spam") |
| u += UserList("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| |
| u = u2 = UserList("spam") |
| u += UserListSubclass("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserList) |
| self.assertIs(u, u2) |
| |
| u = u2 = UserListSubclass("spam") |
| u += UserList("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| self.assertIs(u, u2) |
| |
| u = u2 = UserListSubclass("spam") |
| u += UserListSubclass2("eggs") |
| self.assertEqual(u, list("spameggs")) |
| self.assertIs(type(u), UserListSubclass) |
| self.assertIs(u, u2) |
| |
| def test_mixed_cmp(self): |
| u = self.type2test([0, 1]) |
| self._assert_cmp(u, [0, 1], 0) |
| self._assert_cmp(u, [0], 1) |
| self._assert_cmp(u, [0, 2], -1) |
| |
| def test_getitemoverwriteiter(self): |
| # Verify that __getitem__ overrides *are* recognized by __iter__ |
| class T(self.type2test): |
| def __getitem__(self, key): |
| return str(key) + '!!!' |
| self.assertEqual(next(iter(T((1,2)))), "0!!!") |
| |
| def test_implementation(self): |
| u = UserList([1]) |
| with (support.swap_attr(UserList, '__len__', None), |
| support.swap_attr(UserList, 'insert', None)): |
| u.append(2) |
| self.assertEqual(u, [1, 2]) |
| with support.swap_attr(UserList, 'append', None): |
| u.extend([3, 4]) |
| self.assertEqual(u, [1, 2, 3, 4]) |
| with support.swap_attr(UserList, 'append', None): |
| u.extend(UserList([3, 4])) |
| self.assertEqual(u, [1, 2, 3, 4, 3, 4]) |
| with support.swap_attr(UserList, '__iter__', None): |
| c = u.count(3) |
| self.assertEqual(c, 2) |
| with (support.swap_attr(UserList, '__iter__', None), |
| support.swap_attr(UserList, '__getitem__', None)): |
| i = u.index(4) |
| self.assertEqual(i, 3) |
| with (support.swap_attr(UserList, 'index', None), |
| support.swap_attr(UserList, '__getitem__', None)): |
| u.remove(3) |
| self.assertEqual(u, [1, 2, 4, 3, 4]) |
| with (support.swap_attr(UserList, '__getitem__', None), |
| support.swap_attr(UserList, '__delitem__', None)): |
| u.pop() |
| self.assertEqual(u, [1, 2, 4, 3]) |
| with (support.swap_attr(UserList, '__len__', None), |
| support.swap_attr(UserList, '__getitem__', None), |
| support.swap_attr(UserList, '__setitem__', None)): |
| u.reverse() |
| self.assertEqual(u, [3, 4, 2, 1]) |
| with (support.swap_attr(UserList, '__len__', None), |
| support.swap_attr(UserList, 'pop', None)): |
| u.clear() |
| self.assertEqual(u, []) |
| |
| def test_userlist_copy(self): |
| u = self.type2test([6, 8, 1, 9, 1]) |
| v = u.copy() |
| self.assertEqual(u, v) |
| self.assertEqual(type(u), type(v)) |
| |
| # Decorate existing test with recursion limit, because |
| # the test is for C structure, but `UserList` is a Python structure. |
| test_repr_deep = list_tests.CommonTest.test_repr_deep |
| |
| if __name__ == "__main__": |
| unittest.main() |
