Method test_accumulate

Lib/test/test_itertools.py:2162–2171

(self)

class TestVariousIteratorArgs(unittest.TestCase):

    def test_accumulate(self):
        s = [1,2,3,4,5]
        r = [1,3,6,10,15]
        n = len(s)
        for g in (G, I, Ig, L, R):
            self.assertEqual(list(accumulate(g(s))), r)
        self.assertEqual(list(accumulate(S(s))), [])
        self.assertRaises(TypeError, accumulate, X(s))
        self.assertRaises(TypeError, accumulate, N(s))
        self.assertRaises(ZeroDivisionError, list, accumulate(E(s)))

    def test_batched(self):
        s = 'abcde'