def test__registerDoubleAttribute(self):
"""check Attributes._registerDoubleAttribute()
"""
d = {'g_called' : False, 's_called' : False, 'value' : 0}
def g(obj):
d['g_called'] = True
return d['value']
def s(obj, value):
d['s_called'] = True
d['value'] = value
return
a = Attributes()
wa = weakref.ref(a)
a._registerDoubleAttribute('a1', g, s)
self.assertFalse('a1' in a.__dict__)
self.assertFalse(d['g_called'])
self.assertFalse(d['s_called'])
self.assertEqual(0, a.a1)
self.assertTrue(d['g_called'])
self.assertFalse(d['s_called'])
a.a1 = 47
self.assertTrue(d['s_called'])
self.assertEqual(47, d['value'])
self.assertTrue(hasattr(a, 'a1'))
a._registerDoubleAttribute('a1readonly', g)
self.assertEqual(47, a.a1readonly)
self.assertTrue(hasattr(a, 'a1readonly'))
self.assertRaises(AttributeError, a._setDoubleAttr, 'a1readonly', 7)
self.assertRaises(AttributeError, setattr, a, 'a1readonly', 5)
self.assertEqual(47, a.a1readonly)
a.a1 = 9
self.assertEqual(9, a.a1readonly)
self.assertFalse(wa() is None)
del a
gc.collect()
self.assertTrue(wa() is None)
return
