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90e10e79ea
I added also the feature that a @prop.getter decorator does not overwrite the doc string of the property if it was given as an argument to property().
98 lines
2.5 KiB
Python
98 lines
2.5 KiB
Python
# Test case for property
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# more tests are in test_descr
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import unittest
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from test.test_support import run_unittest
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class PropertyBase(Exception):
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pass
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class PropertyGet(PropertyBase):
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pass
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class PropertySet(PropertyBase):
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pass
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class PropertyDel(PropertyBase):
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pass
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class BaseClass(object):
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def __init__(self):
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self._spam = 5
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@property
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def spam(self):
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"""BaseClass.getter"""
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return self._spam
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@spam.setter
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def spam(self, value):
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self._spam = value
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@spam.deleter
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def spam(self):
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del self._spam
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class SubClass(BaseClass):
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@BaseClass.spam.getter
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def spam(self):
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"""SubClass.getter"""
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raise PropertyGet(self._spam)
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@spam.setter
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def spam(self, value):
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raise PropertySet(self._spam)
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@spam.deleter
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def spam(self):
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raise PropertyDel(self._spam)
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class PropertyDocBase(object):
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_spam = 1
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def _get_spam(self):
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return self._spam
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spam = property(_get_spam, doc="spam spam spam")
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class PropertyDocSub(PropertyDocBase):
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@PropertyDocBase.spam.getter
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def spam(self):
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"""The decorator does not use this doc string"""
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return self._spam
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class PropertyTests(unittest.TestCase):
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def test_property_decorator_baseclass(self):
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# see #1620
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base = BaseClass()
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self.assertEqual(base.spam, 5)
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self.assertEqual(base._spam, 5)
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base.spam = 10
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self.assertEqual(base.spam, 10)
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self.assertEqual(base._spam, 10)
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delattr(base, "spam")
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self.assert_(not hasattr(base, "spam"))
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self.assert_(not hasattr(base, "_spam"))
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base.spam = 20
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self.assertEqual(base.spam, 20)
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self.assertEqual(base._spam, 20)
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self.assertEqual(base.__class__.spam.__doc__, "BaseClass.getter")
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def test_property_decorator_subclass(self):
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# see #1620
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sub = SubClass()
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self.assertRaises(PropertyGet, getattr, sub, "spam")
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self.assertRaises(PropertySet, setattr, sub, "spam", None)
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self.assertRaises(PropertyDel, delattr, sub, "spam")
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self.assertEqual(sub.__class__.spam.__doc__, "SubClass.getter")
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def test_property_decorator_doc(self):
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base = PropertyDocBase()
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sub = PropertyDocSub()
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self.assertEqual(base.__class__.spam.__doc__, "spam spam spam")
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self.assertEqual(sub.__class__.spam.__doc__, "spam spam spam")
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def test_main():
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run_unittest(PropertyTests)
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if __name__ == '__main__':
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test_main()
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