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# Check every path through every method of UserList
from collections import UserList
from test import list_tests
import unittest
from test import support
class UserListTest(list_tests.CommonTest):
type2test = UserList
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_add_specials(self):
u = UserList("spam")
u2 = u + "eggs"
self.assertEqual(u2, list("spameggs"))
def test_radd_specials(self):
u = UserList("eggs")
u2 = "spam" + u
self.assertEqual(u2, list("spameggs"))
u2 = u.__radd__(UserList("spam"))
self.assertEqual(u2, list("spameggs"))
def test_iadd(self):
super().test_iadd()
u = [0, 1]
u += UserList([0, 1])
self.assertEqual(u, [0, 1, 0, 1])
def test_mixedcmp(self):
u = self.type2test([0, 1])
self.assertEqual(u, [0, 1])
self.assertNotEqual(u, [0])
self.assertNotEqual(u, [0, 2])
def test_mixedadd(self):
u = self.type2test([0, 1])
self.assertEqual(u + [], u)
self.assertEqual(u + [2], [0, 1, 2])
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_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 = support.infinite_recursion(25)(
list_tests.CommonTest.test_repr_deep,
)
if __name__ == "__main__":
unittest.main()
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