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1 # Python test set -- built-in functions |
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2 |
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3 import test.test_support, unittest |
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4 import sys |
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5 import pickle |
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6 |
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7 import warnings |
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8 warnings.filterwarnings("ignore", "integer argument expected", |
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9 DeprecationWarning, "unittest") |
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10 |
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11 class XrangeTest(unittest.TestCase): |
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12 def test_xrange(self): |
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13 self.assertEqual(list(xrange(3)), [0, 1, 2]) |
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14 self.assertEqual(list(xrange(1, 5)), [1, 2, 3, 4]) |
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15 self.assertEqual(list(xrange(0)), []) |
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16 self.assertEqual(list(xrange(-3)), []) |
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17 self.assertEqual(list(xrange(1, 10, 3)), [1, 4, 7]) |
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18 self.assertEqual(list(xrange(5, -5, -3)), [5, 2, -1, -4]) |
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19 |
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20 a = 10 |
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21 b = 100 |
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22 c = 50 |
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23 |
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24 self.assertEqual(list(xrange(a, a+2)), [a, a+1]) |
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25 self.assertEqual(list(xrange(a+2, a, -1L)), [a+2, a+1]) |
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26 self.assertEqual(list(xrange(a+4, a, -2)), [a+4, a+2]) |
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27 |
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28 seq = list(xrange(a, b, c)) |
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29 self.assert_(a in seq) |
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30 self.assert_(b not in seq) |
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31 self.assertEqual(len(seq), 2) |
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32 |
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33 seq = list(xrange(b, a, -c)) |
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34 self.assert_(b in seq) |
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35 self.assert_(a not in seq) |
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36 self.assertEqual(len(seq), 2) |
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37 |
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38 seq = list(xrange(-a, -b, -c)) |
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39 self.assert_(-a in seq) |
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40 self.assert_(-b not in seq) |
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41 self.assertEqual(len(seq), 2) |
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42 |
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43 self.assertRaises(TypeError, xrange) |
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44 self.assertRaises(TypeError, xrange, 1, 2, 3, 4) |
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45 self.assertRaises(ValueError, xrange, 1, 2, 0) |
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46 |
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47 self.assertRaises(OverflowError, xrange, 1e100, 1e101, 1e101) |
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48 |
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49 self.assertRaises(TypeError, xrange, 0, "spam") |
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50 self.assertRaises(TypeError, xrange, 0, 42, "spam") |
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51 |
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52 self.assertEqual(len(xrange(0, sys.maxint, sys.maxint-1)), 2) |
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53 |
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54 self.assertRaises(OverflowError, xrange, -sys.maxint, sys.maxint) |
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55 self.assertRaises(OverflowError, xrange, 0, 2*sys.maxint) |
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56 |
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57 r = xrange(-sys.maxint, sys.maxint, 2) |
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58 self.assertEqual(len(r), sys.maxint) |
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59 self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2) |
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60 |
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61 def test_pickling(self): |
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62 testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1), |
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63 (13, 21, 3), (-2, 2, 2)] |
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64 for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
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65 for t in testcases: |
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66 r = xrange(*t) |
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67 self.assertEquals(list(pickle.loads(pickle.dumps(r, proto))), |
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68 list(r)) |
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69 |
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70 |
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71 def test_main(): |
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72 test.test_support.run_unittest(XrangeTest) |
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73 |
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74 if __name__ == "__main__": |
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75 test_main() |