Christian Heimes | 0449f63 | 2007-12-15 01:27:15 +0000 | [diff] [blame] | 1 | # Test case for property |
| 2 | # more tests are in test_descr |
| 3 | |
| 4 | import unittest |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 5 | from test.support import run_unittest |
Christian Heimes | 0449f63 | 2007-12-15 01:27:15 +0000 | [diff] [blame] | 6 | |
| 7 | class PropertyBase(Exception): |
| 8 | pass |
| 9 | |
| 10 | class PropertyGet(PropertyBase): |
| 11 | pass |
| 12 | |
| 13 | class PropertySet(PropertyBase): |
| 14 | pass |
| 15 | |
| 16 | class PropertyDel(PropertyBase): |
| 17 | pass |
| 18 | |
| 19 | class BaseClass(object): |
| 20 | def __init__(self): |
| 21 | self._spam = 5 |
| 22 | |
| 23 | @property |
| 24 | def spam(self): |
| 25 | """BaseClass.getter""" |
| 26 | return self._spam |
| 27 | |
| 28 | @spam.setter |
| 29 | def spam(self, value): |
| 30 | self._spam = value |
| 31 | |
| 32 | @spam.deleter |
| 33 | def spam(self): |
| 34 | del self._spam |
| 35 | |
| 36 | class SubClass(BaseClass): |
| 37 | |
| 38 | @BaseClass.spam.getter |
| 39 | def spam(self): |
| 40 | """SubClass.getter""" |
| 41 | raise PropertyGet(self._spam) |
| 42 | |
| 43 | @spam.setter |
| 44 | def spam(self, value): |
| 45 | raise PropertySet(self._spam) |
| 46 | |
| 47 | @spam.deleter |
| 48 | def spam(self): |
| 49 | raise PropertyDel(self._spam) |
| 50 | |
| 51 | class PropertyDocBase(object): |
| 52 | _spam = 1 |
| 53 | def _get_spam(self): |
| 54 | return self._spam |
| 55 | spam = property(_get_spam, doc="spam spam spam") |
| 56 | |
| 57 | class PropertyDocSub(PropertyDocBase): |
| 58 | @PropertyDocBase.spam.getter |
| 59 | def spam(self): |
| 60 | """The decorator does not use this doc string""" |
| 61 | return self._spam |
| 62 | |
| 63 | class PropertyTests(unittest.TestCase): |
| 64 | def test_property_decorator_baseclass(self): |
| 65 | # see #1620 |
| 66 | base = BaseClass() |
| 67 | self.assertEqual(base.spam, 5) |
| 68 | self.assertEqual(base._spam, 5) |
| 69 | base.spam = 10 |
| 70 | self.assertEqual(base.spam, 10) |
| 71 | self.assertEqual(base._spam, 10) |
| 72 | delattr(base, "spam") |
| 73 | self.assert_(not hasattr(base, "spam")) |
| 74 | self.assert_(not hasattr(base, "_spam")) |
| 75 | base.spam = 20 |
| 76 | self.assertEqual(base.spam, 20) |
| 77 | self.assertEqual(base._spam, 20) |
| 78 | self.assertEqual(base.__class__.spam.__doc__, "BaseClass.getter") |
| 79 | |
| 80 | def test_property_decorator_subclass(self): |
| 81 | # see #1620 |
| 82 | sub = SubClass() |
| 83 | self.assertRaises(PropertyGet, getattr, sub, "spam") |
| 84 | self.assertRaises(PropertySet, setattr, sub, "spam", None) |
| 85 | self.assertRaises(PropertyDel, delattr, sub, "spam") |
| 86 | self.assertEqual(sub.__class__.spam.__doc__, "SubClass.getter") |
| 87 | |
| 88 | def test_property_decorator_doc(self): |
| 89 | base = PropertyDocBase() |
| 90 | sub = PropertyDocSub() |
| 91 | self.assertEqual(base.__class__.spam.__doc__, "spam spam spam") |
| 92 | self.assertEqual(sub.__class__.spam.__doc__, "spam spam spam") |
| 93 | |
| 94 | def test_main(): |
| 95 | run_unittest(PropertyTests) |
| 96 | |
| 97 | if __name__ == '__main__': |
| 98 | test_main() |