def testIterators_12_Deletion(self):
p = TreeDict()
p.a = 1
p.b = 2
p.c = 3
p.d = 4
p.e = 5
it = p.iterkeys()
self.assertRaises(RuntimeError, lambda: p.pop('a'))
it.next()
self.assertRaises(RuntimeError, lambda: p.pop('a'))
del it
p.pop('a')
