Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_pprint.py @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 1802a9edb4ee
children d26d8575ac62
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1 import pprint
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2 import unittest
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3
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4 import test_support
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5
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6 try:
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7 uni = unicode
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8 except NameError:
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9 def uni(x):return x
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10
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11
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12 class QueryTestCase(unittest.TestCase):
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13
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14 def setUp(self):
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15 self.a = range(100)
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16 self.b = range(200)
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17 self.a[-12] = self.b
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18
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19 def test_basic(self):
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20 """Verify .isrecursive() and .isreadable() w/o recursion."""
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21 verify = self.assert_
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22 for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, uni("yaddayadda"),
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23 self.a, self.b):
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24 verify(not pprint.isrecursive(safe),
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25 "expected not isrecursive for " + `safe`)
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26 verify(pprint.isreadable(safe),
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27 "expected isreadable for " + `safe`)
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28
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29 def test_knotted(self):
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30 """Verify .isrecursive() and .isreadable() w/ recursion."""
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31 # Tie a knot.
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32 self.b[67] = self.a
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33 # Messy dict.
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34 self.d = {}
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35 self.d[0] = self.d[1] = self.d[2] = self.d
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36
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37 verify = self.assert_
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38
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39 for icky in self.a, self.b, self.d, (self.d, self.d):
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40 verify(pprint.isrecursive(icky), "expected isrecursive")
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41 verify(not pprint.isreadable(icky), "expected not isreadable")
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42
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43 # Break the cycles.
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44 self.d.clear()
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45 del self.a[:]
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46 del self.b[:]
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47
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48 for safe in self.a, self.b, self.d, (self.d, self.d):
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49 verify(not pprint.isrecursive(safe),
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50 "expected not isrecursive for " + `safe`)
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51 verify(pprint.isreadable(safe),
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52 "expected isreadable for " + `safe`)
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53
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54 def test_unreadable(self):
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55 """Not recursive but not readable anyway."""
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56 verify = self.assert_
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57 for unreadable in type(3), pprint, pprint.isrecursive:
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58 verify(not pprint.isrecursive(unreadable),
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59 "expected not isrecursive for " + `unreadable`)
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60 verify(not pprint.isreadable(unreadable),
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61 "expected not isreadable for " + `unreadable`)
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63 def test_same_as_repr(self):
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64 "Simple objects and small containers that should be same as repr()."
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65 verify = self.assert_
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66 for simple in (0, 0L, 0+0j, 0.0, "", uni(""), (), [], {}, verify, pprint,
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67 -6, -6L, -6-6j, -1.5, "x", uni("x"), (3,), [3], {3: 6},
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68 (1,2), [3,4], {5: 6, 7: 8},
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69 {"xy\tab\n": (3,), 5: [[]], (): {}},
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70 range(10, -11, -1)
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71 ):
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72 native = repr(simple)
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73 for function in "pformat", "saferepr":
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74 f = getattr(pprint, function)
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75 got = f(simple)
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76 verify(native == got, "expected %s got %s from pprint.%s" %
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77 (native, got, function))
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79
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80 def test_basic_line_wrap(self):
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81 """verify basic line-wrapping operation"""
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82 o = {'RPM_cal': 0,
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83 'RPM_cal2': 48059,
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84 'Speed_cal': 0,
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85 'controldesk_runtime_us': 0,
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86 'main_code_runtime_us': 0,
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87 'read_io_runtime_us': 0,
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88 'write_io_runtime_us': 43690}
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89 exp = """\
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90 {'RPM_cal': 0,
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91 'RPM_cal2': 48059,
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92 'Speed_cal': 0,
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93 'controldesk_runtime_us': 0,
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94 'main_code_runtime_us': 0,
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95 'read_io_runtime_us': 0,
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96 'write_io_runtime_us': 43690}"""
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97 self.assertEqual(pprint.pformat(o), exp)
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98
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99 def test_main():
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100 test_support.run_unittest(QueryTestCase)
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101
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102
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103 if __name__ == "__main__":
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104 test_main()