mirror of https://github.com/python/cpython
86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
# Test the module type
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import unittest
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from test.support import run_unittest, gc_collect
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import sys
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ModuleType = type(sys)
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class ModuleTests(unittest.TestCase):
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def test_uninitialized(self):
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# An uninitialized module has no __dict__ or __name__,
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# and __doc__ is None
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foo = ModuleType.__new__(ModuleType)
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self.assertTrue(foo.__dict__ is None)
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self.assertRaises(SystemError, dir, foo)
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try:
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s = foo.__name__
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self.fail("__name__ = %s" % repr(s))
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except AttributeError:
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pass
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self.assertEqual(foo.__doc__, ModuleType.__doc__)
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def test_no_docstring(self):
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# Regularly initialized module, no docstring
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foo = ModuleType("foo")
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self.assertEqual(foo.__name__, "foo")
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self.assertEqual(foo.__doc__, None)
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self.assertEqual(foo.__dict__, {"__name__": "foo", "__doc__": None})
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def test_ascii_docstring(self):
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# ASCII docstring
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foo = ModuleType("foo", "foodoc")
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self.assertEqual(foo.__name__, "foo")
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self.assertEqual(foo.__doc__, "foodoc")
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self.assertEqual(foo.__dict__,
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{"__name__": "foo", "__doc__": "foodoc"})
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def test_unicode_docstring(self):
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# Unicode docstring
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foo = ModuleType("foo", "foodoc\u1234")
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self.assertEqual(foo.__name__, "foo")
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self.assertEqual(foo.__doc__, "foodoc\u1234")
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self.assertEqual(foo.__dict__,
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{"__name__": "foo", "__doc__": "foodoc\u1234"})
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def test_reinit(self):
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# Reinitialization should not replace the __dict__
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foo = ModuleType("foo", "foodoc\u1234")
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foo.bar = 42
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d = foo.__dict__
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foo.__init__("foo", "foodoc")
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self.assertEqual(foo.__name__, "foo")
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self.assertEqual(foo.__doc__, "foodoc")
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self.assertEqual(foo.bar, 42)
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self.assertEqual(foo.__dict__,
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{"__name__": "foo", "__doc__": "foodoc", "bar": 42})
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self.assertTrue(foo.__dict__ is d)
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@unittest.expectedFailure
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def test_dont_clear_dict(self):
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# See issue 7140.
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def f():
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foo = ModuleType("foo")
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foo.bar = 4
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return foo
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gc_collect()
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self.assertEqual(f().__dict__["bar"], 4)
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def test_clear_dict_in_ref_cycle(self):
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destroyed = []
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m = ModuleType("foo")
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m.destroyed = destroyed
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s = """class A:
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def __del__(self, destroyed=destroyed):
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destroyed.append(1)
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a = A()"""
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exec(s, m.__dict__)
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del m
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gc_collect()
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self.assertEqual(destroyed, [1])
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def test_main():
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run_unittest(ModuleTests)
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if __name__ == '__main__':
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test_main()
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