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test_chunked.py
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test_chunked.py
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from unittest import TestCase
import chunked
class TakeTests(TestCase):
def test_smiple_take(self):
t = chunked.take(range(10), 5)
self.assertEqual(t,[0,1,2,3,4])
def test_null_take(self):
t = chunked.take(range(10), 0)
self.assertEqual(t, [])
def test_negative_take(self):
self.assertRaises(ValueError, lambda: chunked.take(range(10), -3))
def test_too_much_take(self):
t = chunked.take(range(5), 10)
self.assertEqual(t, [0,1,2,3,4])
class ChunkedTests(TestCase):
def test_even(self):
self.assertEqual(
list(chunked.chunked([1,2,3,4,5,6], 3)), [[1,2,3], [4,5,6]]
)
def test_odd(self):
self.assertEqual(
list(chunked.chunked([1,2,3,4,5,6,7,8], 3)), [[1,2,3],[4,5,6],[7,8]]
)
def test_None(self):
self.assertEqual(
list(chunked.chunked([1,2,3,4,5,6,7], None)), [[1,2,3,4,5,6,7]]
)
def test_strict_False(self):
self.assertEqual(
list(chunked.chunked([1,2,3,4,5,6,7], None, strict=False)), [[1,2,3,4,5,6,7]]
)
def test_strict_True(self):
def f():
return list(chunked.chunked([1,2,3,4,5], 3, strict=True))
self.assertRaisesRegex(
ValueError, "iterator is not divisible by n",f
)
self.assertEqual(
list(chunked.chunked([1,2,3,4,5,6,7,8,9], 3, strict=True)),
[[1,2,3],[4,5,6],[7,8,9]]
)
def test_strict_true_size_None(self):
def f():
return list(chunked.chunked([1,2,3,4,5], None, strict=True))
self.assertRaisesRegex(
ValueError, "n cant be None when strict is True", f
)