def test_mutablechain(self):
m = MutableChain(range(2), [2, 3], (4, 5))
m.extend(range(6, 7))
m.extend([7, 8])
m.extend([9, 10], (11, 12))
self.assertEqual(next(m), 0)
self.assertEqual(m.next(), 1)
self.assertEqual(m.__next__(), 2)
self.assertEqual(list(m), list(range(3, 13)))
def test_mutablechain(self):
m = MutableChain(range(2), [2, 3], (4, 5))
m.extend(range(6, 7))
m.extend([7, 8])
m.extend([9, 10], (11, 12))
self.assertEqual(next(m), 0)
self.assertEqual(m.next(), 1)
self.assertEqual(m.__next__(), 2)
self.assertEqual(list(m), list(range(3, 13)))
def test_mutablechain(self):
m = MutableChain(range(2), [2, 3], (4, 5))
m.extend(range(6, 7))
m.extend([7, 8])
m.extend([9, 10], (11, 12))
self.assertEqual(next(m), 0)
self.assertEqual(m.__next__(), 1)
with catch_warnings(record=True) as warnings:
self.assertEqual(m.next(), 2)
self.assertEqual(len(warnings), 1)
self.assertIn('scrapy.utils.python.MutableChain.__next__',
str(warnings[0].message))
self.assertEqual(list(m), list(range(3, 13)))
