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- # Python test set -- built-in functions
-
- import test.test_support, unittest
- import sys
-
- import warnings
- warnings.filterwarnings("ignore", "integer argument expected",
- DeprecationWarning, "unittest")
-
- class XrangeTest(unittest.TestCase):
- 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)
- if sys.maxint > 0x7fffffff:
- # XXX raising ValueError is less than ideal, but this can't
- # be fixed until range_length() returns a long in rangeobject.c
- self.assertRaises(ValueError, len, r)
- else:
- self.assertEqual(len(r), sys.maxint)
- self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2)
-
- def test_main():
- test.test_support.run_unittest(XrangeTest)
-
- if __name__ == "__main__":
- test_main()
-