def test_range_iterators(self):
# see issue 7298
limits = [
base + jiggle for M in (2**32, 2**64)
for base in (-M, -M // 2, 0, M // 2, M)
for jiggle in (-2, -1, 0, 1, 2)
]
test_ranges = [(start, end, step) for start in limits for end in limits
for step in (-2**63, -2**31, -2, -1, 1, 2)]
for start, end, step in test_ranges:
# try:
iter1 = xrange(start, end, step)
# except OverflowError:
# pass
# else:
iter2 = pyrange(start, end, step)
test_id = "xrange({0}, {1}, {2})".format(start, end, step)
# check first 100 entries
self.assert_iterators_equal(iter1, iter2, test_id, limit=100)
# try:
iter1 = reversed(xrange(start, end, step))
# except OverflowError:
# pass
# else:
iter2 = pyrange_reversed(start, end, step)
test_id = "reversed(xrange({0}, {1}, {2}))".format(
start, end, step)
self.assert_iterators_equal(iter1, iter2, test_id, limit=100)
def test_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1), (13, 21, 3), (-2, 2, 2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = xrange(*t)
self.assertEqual(list(pickle.loads(pickle.dumps(r, proto))), list(r))
M = min(sys.maxint, sys.maxsize)
large_testcases = testcases + [
(0, M, 1),
(M, 0, -1),
(0, M, M - 1),
(M // 2, M, 1),
(0, -M, -1),
(0, -M, 1 - M),
(-M, M, 2),
(-M, M, 1024),
(-M, M, 10585),
(M, -M, -2),
(M, -M, -1024),
(M, -M, -10585),
]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in large_testcases:
r = xrange(*t)
r_out = pickle.loads(pickle.dumps(r, proto))
self.assert_xranges_equivalent(r_out, r)
def test_range_iterators(self):
# see issue 7298
limits = [
base + jiggle
for M in (2 ** 32, 2 ** 64)
for base in (-M, -M // 2, 0, M // 2, M)
for jiggle in (-2, -1, 0, 1, 2)
]
test_ranges = [
(start, end, step) for start in limits for end in limits for step in (-2 ** 63, -2 ** 31, -2, -1, 1, 2)
]
for start, end, step in test_ranges:
try:
iter1 = xrange(start, end, step)
except OverflowError:
pass
else:
iter2 = pyrange(start, end, step)
test_id = "xrange({}, {}, {})".format(start, end, step)
# check first 100 entries
self.assert_iterators_equal(iter1, iter2, test_id, limit=100)
try:
iter1 = reversed(xrange(start, end, step))
except OverflowError:
pass
else:
iter2 = pyrange_reversed(start, end, step)
test_id = "reversed(xrange({}, {}, {}))".format(start, end, step)
self.assert_iterators_equal(iter1, iter2, test_id, limit=100)
def test_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1),
(13, 21, 3), (-2, 2, 2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = xrange(*t)
self.assertEqual(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
M = min(sys.maxint, sys.maxsize)
large_testcases = testcases + [
(0, M, 1),
(M, 0, -1),
(0, M, M - 1),
(M // 2, M, 1),
(0, -M, -1),
(0, -M, 1 - M),
(-M, M, 2),
(-M, M, 1024),
(-M, M, 10585),
(M, -M, -2),
(M, -M, -1024),
(M, -M, -10585),
]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in large_testcases:
r = xrange(*t)
r_out = pickle.loads(pickle.dumps(r, proto))
self.assert_xranges_equivalent(r_out, r)
def test_repr(self):
# Check that repr of an xrange is a valid representation
# of that xrange.
# Valid xranges have at most min(sys.maxint, sys.maxsize) elements.
M = min(sys.maxint, sys.maxsize)
testcases = [
(13,),
(0, 11),
(-22, 10),
(20, 3, -1),
(13, 21, 3),
(-2, 2, 2),
(0, M, 1),
(M, 0, -1),
(0, M, M - 1),
(M // 2, M, 1),
(0, -M, -1),
(0, -M, 1 - M),
(-M, M, 2),
(-M, M, 1024),
(-M, M, 10585),
(M, -M, -2),
(M, -M, -1024),
(M, -M, -10585),
]
for t in testcases:
r = xrange(*t)
r_out = eval(repr(r))
self.assert_xranges_equivalent(r, r_out)
def test_repr(self):
# Check that repr of an xrange is a valid representation
# of that xrange.
# Valid xranges have at most min(sys.maxint, sys.maxsize) elements.
M = min(sys.maxint, sys.maxsize)
testcases = [
(13,),
(0, 11),
(-22, 10),
(20, 3, -1),
(13, 21, 3),
(-2, 2, 2),
(0, M, 1),
(M, 0, -1),
(0, M, M - 1),
(M // 2, M, 1),
(0, -M, -1),
(0, -M, 1 - M),
(-M, M, 2),
(-M, M, 1024),
(-M, M, 10585),
(M, -M, -2),
(M, -M, -1024),
(M, -M, -10585),
]
for t in testcases:
r = xrange(*t)
r_out = eval(repr(r))
self.assert_xranges_equivalent(r, r_out)
def test_pickling(self):
testcases = [(13, ), (0, 11), (-22, 10), (20, 3, -1), (13, 21, 3),
(-2, 2, 2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = xrange(*t)
self.assertEquals(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
def test_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1),
(13, 21, 3), (-2, 2, 2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = xrange(*t)
self.assertEquals(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
def test_xrange(self):
self.assertEqual(list(xrange(3)), [0, 1, 2])
self.assertEqual(list(xrange(1, 5)), [1, 2, 3, 4])
self.assertEqual(list(xrange(0)), [])
self.assertEqual(list(xrange(-3)), [])
self.assertEqual(list(xrange(1, 10, 3)), [1, 4, 7])
self.assertEqual(list(xrange(5, -5, -3)), [5, 2, -1, -4])
a = 10
b = 100
c = 50
self.assertEqual(list(xrange(a, a + 2)), [a, a + 1])
self.assertEqual(list(xrange(a + 2, a, -1L)), [a + 2, a + 1])
self.assertEqual(list(xrange(a + 4, a, -2)), [a + 4, a + 2])
seq = list(xrange(a, b, c))
self.assert_(a in seq)
self.assert_(b not in seq)
self.assertEqual(len(seq), 2)
seq = list(xrange(b, a, -c))
self.assert_(b in seq)
self.assert_(a not in seq)
self.assertEqual(len(seq), 2)
seq = list(xrange(-a, -b, -c))
self.assert_(-a in seq)
self.assert_(-b not in seq)
self.assertEqual(len(seq), 2)
self.assertRaises(TypeError, xrange)
self.assertRaises(TypeError, xrange, 1, 2, 3, 4)
self.assertRaises(ValueError, xrange, 1, 2, 0)
# self.assertRaises(OverflowError, xrange, 1e100, 1e101, 1e101)
self.assertRaises(TypeError, xrange, 0, "spam")
self.assertRaises(TypeError, xrange, 0, 42, "spam")
self.assertEqual(len(xrange(0, sys.maxint, sys.maxint - 1)), 2)
# self.assertRaises(OverflowError, xrange, -sys.maxint, sys.maxint)
# self.assertRaises(OverflowError, xrange, 0, 2*sys.maxint)
r = xrange(-sys.maxint, sys.maxint, 2)
self.assertEqual(len(r), sys.maxint)
def test_xrange(self):
self.assertEqual(list(xrange(3)), [0, 1, 2])
self.assertEqual(list(xrange(1, 5)), [1, 2, 3, 4])
self.assertEqual(list(xrange(0)), [])
self.assertEqual(list(xrange(-3)), [])
self.assertEqual(list(xrange(1, 10, 3)), [1, 4, 7])
self.assertEqual(list(xrange(5, -5, -3)), [5, 2, -1, -4])
a = 10
b = 100
c = 50
self.assertEqual(list(xrange(a, a + 2)), [a, a + 1])
self.assertEqual(list(xrange(a + 2, a, -1L)), [a + 2, a + 1])
self.assertEqual(list(xrange(a + 4, a, -2)), [a + 4, a + 2])
seq = list(xrange(a, b, c))
self.assertIn(a, seq)
self.assertNotIn(b, seq)
self.assertEqual(len(seq), 2)
seq = list(xrange(b, a, -c))
self.assertIn(b, seq)
self.assertNotIn(a, seq)
self.assertEqual(len(seq), 2)
seq = list(xrange(-a, -b, -c))
self.assertIn(-a, seq)
self.assertNotIn(-b, seq)
self.assertEqual(len(seq), 2)
self.assertRaises(TypeError, xrange)
self.assertRaises(TypeError, xrange, 1, 2, 3, 4)
self.assertRaises(ValueError, xrange, 1, 2, 0)
# self.assertRaises(OverflowError, xrange, 10**100, 10**101, 10**101)
self.assertRaises(TypeError, xrange, 0, "spam")
self.assertRaises(TypeError, xrange, 0, 42, "spam")
self.assertEqual(len(xrange(0, sys.maxint, sys.maxint - 1)), 2)
# self.assertRaises(OverflowError, xrange, -sys.maxint, sys.maxint)
# self.assertRaises(OverflowError, xrange, 0, 2*sys.maxint)
r = xrange(-sys.maxint, sys.maxint, 2)
self.assertEqual(len(r), sys.maxint)
def naive(count):
res = 0
for elem in xrange(start, start + step * count, step):
res += elem
return res
