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# Copyright (C) 2009 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tests for smart server request infrastructure (bzrlib.smart.request)."""
from bzrlib import errors
from bzrlib.smart import request
from bzrlib.tests import TestCase
class NoBodyRequest(request.SmartServerRequest):
"""A request that does not implement do_body."""
def do(self):
return request.SuccessfulSmartServerResponse(('ok',))
class DoErrorRequest(request.SmartServerRequest):
"""A request that raises an error from self.do()."""
def do(self):
raise errors.NoSuchFile('xyzzy')
class ChunkErrorRequest(request.SmartServerRequest):
"""A request that raises an error from self.do_chunk()."""
def do(self):
"""No-op."""
pass
def do_chunk(self, bytes):
raise errors.NoSuchFile('xyzzy')
class EndErrorRequest(request.SmartServerRequest):
"""A request that raises an error from self.do_end()."""
def do(self):
"""No-op."""
pass
def do_chunk(self, bytes):
"""No-op."""
pass
def do_end(self):
raise errors.NoSuchFile('xyzzy')
class TestSmartRequest(TestCase):
def test_request_class_without_do_body(self):
"""If a request has no body data, and the request's implementation does
not override do_body, then no exception is raised.
"""
# Create a SmartServerRequestHandler with a SmartServerRequest subclass
# that does not implement do_body.
handler = request.SmartServerRequestHandler(
None, {'foo': NoBodyRequest}, '/')
# Emulate a request with no body (i.e. just args).
handler.args_received(('foo',))
handler.end_received()
# Request done, no exception was raised.
class TestSmartRequestHandlerErrorTranslation(TestCase):
"""Tests that SmartServerRequestHandler will translate exceptions raised by
a SmartServerRequest into FailedSmartServerResponses.
"""
def assertNoResponse(self, handler):
self.assertEqual(None, handler.response)
def assertResponseIsTranslatedError(self, handler):
expected_translation = ('NoSuchFile', 'xyzzy')
self.assertEqual(
request.FailedSmartServerResponse(expected_translation),
handler.response)
def test_error_translation_from_args_received(self):
handler = request.SmartServerRequestHandler(
None, {'foo': DoErrorRequest}, '/')
handler.args_received(('foo',))
self.assertResponseIsTranslatedError(handler)
def test_error_translation_from_chunk_received(self):
handler = request.SmartServerRequestHandler(
None, {'foo': ChunkErrorRequest}, '/')
handler.args_received(('foo',))
self.assertNoResponse(handler)
handler.accept_body('bytes')
self.assertResponseIsTranslatedError(handler)
def test_error_translation_from_end_received(self):
handler = request.SmartServerRequestHandler(
None, {'foo': EndErrorRequest}, '/')
handler.args_received(('foo',))
self.assertNoResponse(handler)
handler.end_received()
self.assertResponseIsTranslatedError(handler)
class TestRequestHanderErrorTranslation(TestCase):
"""Tests for bzrlib.smart.request._translate_error."""
def assertTranslationEqual(self, expected_tuple, error):
self.assertEqual(expected_tuple, request._translate_error(error))
def test_NoSuchFile(self):
self.assertTranslationEqual(
('NoSuchFile', 'path'), errors.NoSuchFile('path'))
def test_LockContention(self):
self.assertTranslationEqual(
('LockContention', 'lock', 'msg'),
errors.LockContention('lock', 'msg'))
def test_TokenMismatch(self):
self.assertTranslationEqual(
('TokenMismatch', 'some-token', 'actual-token'),
errors.TokenMismatch('some-token', 'actual-token'))
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