def test_typed_namedtuple_last_defaults_overwritten(self):
A = typed_namedtuple("A", (("a", "int"), ("b", "int"), ("c", "int")),
defaults=[2, 3])
a = A(5, 44)
self.assertEqual(a.a, 5)
self.assertEqual(a.b, 44)
self.assertEqual(a.c, 3)
def test_typed_namedtuple_all_defaults(self):
A = typed_namedtuple("A", (("a", "int"), ("b", "int"), ("c", "int")),
defaults=[1, 2, 3])
a = A()
self.assertEqual(a.a, 1)
self.assertEqual(a.b, 2)
self.assertEqual(a.c, 3)
def test_typed_namedtuple_getitem_negative(self):
A = typed_namedtuple("A", (("a", "int"), ("b", "int"), ("c", "int")))
a = A(1, 2, 3)
self.assertEqual(a[-1], 3)
self.assertEqual(a[-2], 2)
self.assertEqual(a[-3], 1)
with self.assertRaises(IndexError) as context:
a[-4]
self.assertEqual("tuple index out of range", context.exception.args[0])
def test_typed_namedtuple_too_many_defaults(self):
with self.assertRaises(TypeError) as context:
typed_namedtuple("A", (("a", "int"), ("b", "int"), ("c", "int")),
defaults=[1, 0, 2, 3])
self.assertEqual("Got more default values than field names",
context.exception.args[0])
def test_typed_namedtuple_create_dict(self):
A = typed_namedtuple("A", {"a": "int", "b": "long"})
a = A(42, 21)
self.assertEqual(a.a, 42)
self.assertEqual(a.b, 21)
def test_typed_namedtuple_create_iter(self):
A = typed_namedtuple("A", (("a", "int"), ("b", "long")))
a = A(42, 21)
self.assertEqual(a.a, 42)
self.assertEqual(a.b, 21)