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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, -1)), [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(TypeError, xrange, 0.0, 2, 1)
self.assertRaises(TypeError, xrange, 1, 2.0, 1)
self.assertRaises(TypeError, xrange, 1, 2, 1.0)
self.assertRaises(TypeError, 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)
self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2)
def test_main():
test.test_support.run_unittest(XrangeTest)
if __name__ == "__main__":
test_main()
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