def test_chain_simple(self):
try:
raise SomeOtherException('A')
except SomeOtherException as err:
ex1 = err
err = _chain_exceptions([ex1, ex1])
self.assertEqual(err, ex1)
self.assertIsNone(err.__context__)
with self.assertRaises(SomeOtherException):
raise err
def test_chain_dups_nested(self):
try:
raise SomeOtherException('A')
except SomeOtherException as err:
ex1 = err
try:
raise SomeOtherException('B')
except SomeOtherException as err:
ex2 = err
err = _chain_exceptions([ex1, ex2, ex1, ex2])
self.assertEqual(err, ex2)
self.assertEqual(err.__context__, ex1)
self.assertIsNone(err.__context__.__context__)
with self.assertRaises(SomeOtherException):
raise err