Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_module.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 2e8b28dbc395
children
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1 # Test the module type
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2 import unittest
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3 from test.test_support import run_unittest, gc_collect
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4
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5 import sys
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6 ModuleType = type(sys)
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7
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8 class ModuleTests(unittest.TestCase):
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9 def test_uninitialized(self):
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10 # An uninitialized module has no __dict__ or __name__,
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11 # and __doc__ is None
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12 foo = ModuleType.__new__(ModuleType)
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13 self.assertTrue(foo.__dict__ is None)
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14 self.assertRaises(SystemError, dir, foo)
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15 try:
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16 s = foo.__name__
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17 self.fail("__name__ = %s" % repr(s))
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18 except AttributeError:
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19 pass
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20 self.assertEqual(foo.__doc__, ModuleType.__doc__)
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21
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22 def test_no_docstring(self):
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23 # Regularly initialized module, no docstring
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24 foo = ModuleType("foo")
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25 self.assertEqual(foo.__name__, "foo")
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26 self.assertEqual(foo.__doc__, None)
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27 self.assertEqual(foo.__dict__, {"__name__": "foo", "__doc__": None})
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28
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29 def test_ascii_docstring(self):
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30 # ASCII docstring
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31 foo = ModuleType("foo", "foodoc")
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32 self.assertEqual(foo.__name__, "foo")
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33 self.assertEqual(foo.__doc__, "foodoc")
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34 self.assertEqual(foo.__dict__,
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35 {"__name__": "foo", "__doc__": "foodoc"})
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36
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37 def test_unicode_docstring(self):
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38 # Unicode docstring
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39 foo = ModuleType("foo", u"foodoc\u1234")
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40 self.assertEqual(foo.__name__, "foo")
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41 self.assertEqual(foo.__doc__, u"foodoc\u1234")
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42 self.assertEqual(foo.__dict__,
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43 {"__name__": "foo", "__doc__": u"foodoc\u1234"})
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44
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45 def test_reinit(self):
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46 # Reinitialization should not replace the __dict__
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47 foo = ModuleType("foo", u"foodoc\u1234")
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48 foo.bar = 42
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49 d = foo.__dict__
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50 foo.__init__("foo", "foodoc")
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51 self.assertEqual(foo.__name__, "foo")
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52 self.assertEqual(foo.__doc__, "foodoc")
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53 self.assertEqual(foo.bar, 42)
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54 self.assertEqual(foo.__dict__,
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55 {"__name__": "foo", "__doc__": "foodoc", "bar": 42})
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56 self.assertTrue(foo.__dict__ is d)
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57
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58 @unittest.expectedFailure
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59 def test_dont_clear_dict(self):
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60 # See issue 7140.
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61 def f():
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62 foo = ModuleType("foo")
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63 foo.bar = 4
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64 return foo
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65 gc_collect()
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66 self.assertEqual(f().__dict__["bar"], 4)
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67
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68 def test_clear_dict_in_ref_cycle(self):
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69 destroyed = []
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70 m = ModuleType("foo")
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71 m.destroyed = destroyed
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72 s = """class A:
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73 def __del__(self, destroyed=destroyed):
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74 destroyed.append(1)
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75 a = A()"""
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76 exec(s, m.__dict__)
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77 del m
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78 gc_collect()
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79 self.assertEqual(destroyed, [1])
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80
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81 def test_main():
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82 run_unittest(ModuleTests)
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83
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84 if __name__ == '__main__':
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85 test_main()