def test_popitem(self):
"""
Tests pop method of AttribDict class.
"""
ad = AttribDict()
ad['test2'] = 'test'
# removing via popitem
temp = ad.popitem()
self.assertEquals(temp, ('test2', 'test'))
self.assertFalse('test2' in ad)
self.assertFalse('test2' in ad.__dict__)
self.assertFalse(hasattr(ad, 'test2'))
# popitem for empty AttribDict raises a KeyError
self.assertRaises(KeyError, ad.popitem)
