(self)
| 754 | self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding) |
| 755 | |
| 756 | def test_intern(self): |
| 757 | has_is_interned = (test.support.check_impl_detail(cpython=True) |
| 758 | or hasattr(sys, '_is_interned')) |
| 759 | self.assertRaises(TypeError, sys.intern) |
| 760 | self.assertRaises(TypeError, sys.intern, b'abc') |
| 761 | if has_is_interned: |
| 762 | self.assertRaises(TypeError, sys._is_interned) |
| 763 | self.assertRaises(TypeError, sys._is_interned, b'abc') |
| 764 | s = "never interned before" + str(random.randrange(0, 10**9)) |
| 765 | self.assertTrue(sys.intern(s) is s) |
| 766 | if has_is_interned: |
| 767 | self.assertIs(sys._is_interned(s), True) |
| 768 | s2 = s.swapcase().swapcase() |
| 769 | if has_is_interned: |
| 770 | self.assertIs(sys._is_interned(s2), False) |
| 771 | self.assertTrue(sys.intern(s2) is s) |
| 772 | if has_is_interned: |
| 773 | self.assertIs(sys._is_interned(s2), False) |
| 774 | |
| 775 | # Subclasses of string can't be interned, because they |
| 776 | # provide too much opportunity for insane things to happen. |
| 777 | # We don't want them in the interned dict and if they aren't |
| 778 | # actually interned, we don't want to create the appearance |
| 779 | # that they are by allowing intern() to succeed. |
| 780 | class S(str): |
| 781 | def __hash__(self): |
| 782 | return 123 |
| 783 | |
| 784 | self.assertRaises(TypeError, sys.intern, S("abc")) |
| 785 | if has_is_interned: |
| 786 | self.assertIs(sys._is_interned(S("abc")), False) |
| 787 | |
| 788 | @support.cpython_only |
| 789 | @requires_subinterpreters |
nothing calls this directly
no test coverage detected