def test_immutable(self):
i = ImmutableDict({"true": True})
with self.assertRaises(RuntimeError):
i.clear()
with self.assertRaises(RuntimeError):
i.pop("true")
with self.assertRaises(RuntimeError):
i.popitem()
with self.assertRaises(RuntimeError):
i.setdefault("false", False)
with self.assertRaises(RuntimeError):
i.update(one=1)
self.assertEqual(i, {"true": True})
def test_parent_class(self):
i = ImmutableDict()
self.assertIsInstance(i, dict)
def test_cant_call_init_again(self):
i = ImmutableDict({"foo": True})
with self.assertRaises(RuntimeError):
i.__init__()
def test_iterators(self):
i = ImmutableDict()
self.assertNotIsInstance(i.items(), (list, tuple))
self.assertNotIsInstance(i.keys(), (list, tuple))
self.assertNotIsInstance(i.values(), (list, tuple))
