| # Python test set -- built-in functions |
| |
| import test.test_support, unittest |
| import sys |
| import pickle |
| |
| 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) |
| self.assertEqual(len(r), sys.maxint) |
| self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2) |
| |
| 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): |
| for t in testcases: |
| r = xrange(*t) |
| self.assertEquals(list(pickle.loads(pickle.dumps(r, proto))), |
| list(r)) |
| |
| |
| def test_main(): |
| test.test_support.run_unittest(XrangeTest) |
| |
| if __name__ == "__main__": |
| test_main() |