def test_extend(self):
tl = TraitList([1],
item_validator=int_item_validator,
notifiers=[self.notification_handler])
tl.extend([1, 2])
self.assertEqual(self.index, 1)
self.assertEqual(self.removed, [])
self.assertEqual(self.added, [1, 2])
def test_extend_iterable(self):
tl = TraitList([1],
item_validator=int_item_validator,
notifiers=[self.notification_handler])
tl.extend(x**2 for x in range(10, 13))
self.assertEqual(tl, [1, 100, 121, 144])
self.assertEqual(self.index, 1)
self.assertEqual(self.removed, [])
self.assertEqual(self.added, [100, 121, 144])
def test_extend_empty(self):
tl = TraitList([1],
item_validator=int_item_validator,
notifiers=[self.notification_handler])
tl.extend([])
self.assertEqual(tl, [1])
self.assertIsNone(self.index)
self.assertIsNone(self.removed)
self.assertIsNone(self.added)
def test_extend_validates(self):
tl = TraitList([5],
item_validator=int_item_validator,
notifiers=[self.notification_handler])
with self.assertRaises(TraitError):
tl.extend([2, 3, 4.0])
self.assertEqual(tl, [5])
self.assertIsNone(self.index)
self.assertIsNone(self.removed)
self.assertIsNone(self.added)
def test_extend_converts(self):
tl = TraitList([4],
item_validator=int_item_validator,
notifiers=[self.notification_handler])
tl.extend([False, True])
self.assertEqual(tl, [4, 0, 1])
self.assertEqual(self.index, 1)
self.assertEqual(self.removed, [])
self.assertEqual(self.added, [0, 1])
self.assertTrue(
all(type(item) is int for item in tl),
msg="Non-integers found in int-only list",
)
self.assertTrue(
all(type(item) is int for item in self.added),
msg="Event contains non-integers for int-only list",
)