def test_insert(self):
t = Tier()
assert len(t) == 0
t.insert(0, Item(id='t1'))
assert len(t) == 1
with pytest.raises(XigtError): t.insert(0, Item(id='t1'))
t.insert(0, Item(id='t2'))
t.insert(100, Item(id='t3'))
assert len(t) == 3
assert t[0].id == 't2'
assert t[1].id == 't1'
assert t[2].id == 't3'
def test_insert(self):
t = Tier()
self.assertEqual(len(t), 0)
t.insert(0, Item(id='t1'))
self.assertEqual(len(t), 1)
self.assertRaises(XigtError, t.insert, 0, Item(id='t1'))
t.insert(0, Item(id='t2'))
t.insert(100, Item(id='t3'))
self.assertEqual(len(t), 3)
self.assertEqual(t[0].id, 't2')
self.assertEqual(t[1].id, 't1')
self.assertEqual(t[2].id, 't3')
