1 # Python test set -- built-in functions

     2 

     3 import test.test_support, unittest

     4 import sys

     5 

     6 import warnings

     7 warnings.filterwarnings("ignore", "integer argument expected",

     8                         DeprecationWarning, "unittest")

     9 

    10 class XrangeTest(unittest.TestCase):

    11     def test_xrange(self):

    12         self.assertEqual(list(xrange(3)), [0, 1, 2])

    13         self.assertEqual(list(xrange(1, 5)), [1, 2, 3, 4])

    14         self.assertEqual(list(xrange(0)), [])

    15         self.assertEqual(list(xrange(-3)), [])

    16         self.assertEqual(list(xrange(1, 10, 3)), [1, 4, 7])

    17         self.assertEqual(list(xrange(5, -5, -3)), [5, 2, -1, -4])

    18 

    19         a = 10

    20         b = 100

    21         c = 50

    22 

    23         self.assertEqual(list(xrange(a, a+2)), [a, a+1])

    24         self.assertEqual(list(xrange(a+2, a, -1L)), [a+2, a+1])

    25         self.assertEqual(list(xrange(a+4, a, -2)), [a+4, a+2])

    26 

    27         seq = list(xrange(a, b, c))

    28         self.assert_(a in seq)

    29         self.assert_(b not in seq)

    30         self.assertEqual(len(seq), 2)

    31 

    32         seq = list(xrange(b, a, -c))

    33         self.assert_(b in seq)

    34         self.assert_(a not in seq)

    35         self.assertEqual(len(seq), 2)

    36 

    37         seq = list(xrange(-a, -b, -c))

    38         self.assert_(-a in seq)

    39         self.assert_(-b not in seq)

    40         self.assertEqual(len(seq), 2)

    41 

    42         self.assertRaises(TypeError, xrange)

    43         self.assertRaises(TypeError, xrange, 1, 2, 3, 4)

    44         self.assertRaises(ValueError, xrange, 1, 2, 0)

    45 

    46         self.assertRaises(OverflowError, xrange, 1e100, 1e101, 1e101)

    47 

    48         self.assertRaises(TypeError, xrange, 0, "spam")

    49         self.assertRaises(TypeError, xrange, 0, 42, "spam")

    50 

    51         self.assertEqual(len(xrange(0, sys.maxint, sys.maxint-1)), 2)

    52 

    53         self.assertRaises(OverflowError, xrange, -sys.maxint, sys.maxint)

    54         self.assertRaises(OverflowError, xrange, 0, 2*sys.maxint)

    55 

    56         r = xrange(-sys.maxint, sys.maxint, 2)

    57         self.assertEqual(len(r), sys.maxint)

    58         self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2)

    59 

    60 def test_main():

    61     test.test_support.run_unittest(XrangeTest)

    62 

    63 if __name__ == "__main__":

    64     test_main()