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_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