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# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2006, 2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import unittest
from dns.exception import DNSException
class FormatedError(DNSException):
fmt = "Custom format: {parameter}"
supp_kwargs = {'parameter'}
class ExceptionTestCase(unittest.TestCase):
def test_custom_message(self):
msg = "this is a custom message"
try:
raise DNSException(msg)
except DNSException as ex:
self.assertEqual(str(ex), msg)
def test_implicit_message(self):
try:
raise DNSException()
except DNSException as ex:
self.assertEqual(ex.__class__.__doc__, str(ex))
def test_formatted_error(self):
"""Exceptions with explicit format has to respect it."""
params = {'parameter': 'value'}
try:
raise FormatedError(**params)
except FormatedError as ex:
msg = FormatedError.fmt.format(**params)
self.assertEqual(msg, str(ex))
def test_kwargs_only(self):
"""Kwargs cannot be combined with args."""
with self.assertRaises(AssertionError):
raise FormatedError(1, a=2)
def test_kwargs_unsupported(self):
"""Only supported kwargs are accepted."""
with self.assertRaises(AssertionError):
raise FormatedError(unsupported=2)
if __name__ == '__main__':
unittest.main()
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