def test_delitem(self):
model = PyListModel([1, 2, 3, 4])
model._other_data = list("abcd")
del model[1]
self.assertSequenceEqual(model, [1, 3, 4])
self.assertSequenceEqual(model._other_data, "acd")
model = PyListModel([1, 2, 3, 4])
model._other_data = list("abcd")
del model[1:3]
self.assertSequenceEqual(model, [1, 4])
self.assertSequenceEqual(model._other_data, "ad")
model = PyListModel([1, 2, 3, 4])
model._other_data = list("abcd")
del model[:]
self.assertSequenceEqual(model, [])
self.assertEqual(len(model._other_data), 0)
model = PyListModel([1, 2, 3, 4])
with self.assertRaises(IndexError):
# non unit strides currently not supported
del model[0:-1:2]
self.assertEqual(len(model), len(model._other_data))
def test_insert(self):
model = PyListModel()
model.insert(0, 1)
self.assertSequenceEqual(model, [1])
self.assertEqual(len(model._other_data), 1)
model._other_data = ["a"]
model.insert(0, 2)
self.assertSequenceEqual(model, [2, 1])
self.assertEqual(model._other_data[1], "a")
self.assertNotEqual(model._other_data[0], "a")
model._other_data[0] = "b"
model.insert(1, 3)
self.assertSequenceEqual(model, [2, 3, 1])
self.assertEqual(model._other_data[0], "b")
self.assertEqual(model._other_data[2], "a")
self.assertNotEqual(model._other_data[1], "b")
self.assertNotEqual(model._other_data[1], "a")
model._other_data[1] = "c"
model.insert(3, 4)
self.assertSequenceEqual(model, [2, 3, 1, 4])
self.assertSequenceEqual(model._other_data[:3], ["b", "c", "a"])
model._other_data[3] = "d"
model.insert(-1, 5)
self.assertSequenceEqual(model, [2, 3, 1, 5, 4])
self.assertSequenceEqual(model._other_data[:3], ["b", "c", "a"])
self.assertEqual(model._other_data[4], "d")
self.assertEqual(len(model), len(model._other_data))
def test_sort(self):
model = PyListModel([3, 1, 4, 2])
model._other_data = list("abcd")
model.sort()
self.assertSequenceEqual(model, [1, 2, 3, 4])
self.assertSequenceEqual(model._other_data, "bdac")
def test_reverse(self):
model = PyListModel([1, 2, 3, 4])
model._other_data = list("abcd")
model.reverse()
self.assertSequenceEqual(model, [4, 3, 2, 1])
self.assertSequenceEqual(model._other_data, "dcba")
def test_pop(self):
model = PyListModel([1, 2, 3, 2, 4])
model._other_data = list("abcde")
model.pop(1)
self.assertSequenceEqual(model, [1, 3, 2, 4])
self.assertSequenceEqual(model._other_data, "acde")