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Viewing changes to bzrlib/tests/test_smart_request.py

  • Committer: Martin Pool
  • Date: 2005-09-01 06:32:52 UTC
  • Revision ID: mbp@sourcefrog.net-20050901063252-00fc761bf1076759
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bzrlib/tests/test_smart_request.py
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# Copyright (C) 2009 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Tests for smart server request infrastructure (bzrlib.smart.request)."""
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import threading
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from bzrlib import errors
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from bzrlib.bzrdir import BzrDir
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from bzrlib.smart import request
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from bzrlib.tests import TestCase, TestCaseWithMemoryTransport
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from bzrlib.transport import get_transport
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27
 
 
28
 
class NoBodyRequest(request.SmartServerRequest):
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    """A request that does not implement do_body."""
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    def do(self):
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        return request.SuccessfulSmartServerResponse(('ok',))
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34
 
 
35
 
class DoErrorRequest(request.SmartServerRequest):
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    """A request that raises an error from self.do()."""
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    def do(self):
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        raise errors.NoSuchFile('xyzzy')
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41
 
 
42
 
class ChunkErrorRequest(request.SmartServerRequest):
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    """A request that raises an error from self.do_chunk()."""
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45
 
    def do(self):
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        """No-op."""
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        pass
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49
 
    def do_chunk(self, bytes):
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        raise errors.NoSuchFile('xyzzy')
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52
 
 
53
 
class EndErrorRequest(request.SmartServerRequest):
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    """A request that raises an error from self.do_end()."""
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    def do(self):
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        """No-op."""
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        pass
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60
 
    def do_chunk(self, bytes):
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        """No-op."""
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        pass
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64
 
    def do_end(self):
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        raise errors.NoSuchFile('xyzzy')
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67
 
 
68
 
class CheckJailRequest(request.SmartServerRequest):
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70
 
    def __init__(self, *args):
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        request.SmartServerRequest.__init__(self, *args)
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        self.jail_transports_log = []
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74
 
    def do(self):
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        self.jail_transports_log.append(request.jail_info.transports)
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77
 
    def do_chunk(self, bytes):
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        self.jail_transports_log.append(request.jail_info.transports)
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80
 
    def do_end(self):
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        self.jail_transports_log.append(request.jail_info.transports)
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83
 
 
84
 
class TestSmartRequest(TestCase):
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86
 
    def test_request_class_without_do_body(self):
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        """If a request has no body data, and the request's implementation does
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        not override do_body, then no exception is raised.
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        """
90
 
        # Create a SmartServerRequestHandler with a SmartServerRequest subclass
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        # that does not implement do_body.
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        handler = request.SmartServerRequestHandler(
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            None, {'foo': NoBodyRequest}, '/')
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        # Emulate a request with no body (i.e. just args).
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        handler.args_received(('foo',))
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        handler.end_received()
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        # Request done, no exception was raised.
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    def test_only_request_code_is_jailed(self):
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        transport = 'dummy transport'
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        handler = request.SmartServerRequestHandler(
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            transport, {'foo': CheckJailRequest}, '/')
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        handler.args_received(('foo',))
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        self.assertEqual(None, request.jail_info.transports)
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        handler.accept_body('bytes')
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        self.assertEqual(None, request.jail_info.transports)
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        handler.end_received()
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        self.assertEqual(None, request.jail_info.transports)
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        self.assertEqual(
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            [[transport]] * 3, handler._command.jail_transports_log)
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112
 
 
113
 
 
114
 
class TestSmartRequestHandlerErrorTranslation(TestCase):
115
 
    """Tests that SmartServerRequestHandler will translate exceptions raised by
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    a SmartServerRequest into FailedSmartServerResponses.
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    """
118
 
 
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    def assertNoResponse(self, handler):
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        self.assertEqual(None, handler.response)
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    def assertResponseIsTranslatedError(self, handler):
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        expected_translation = ('NoSuchFile', 'xyzzy')
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        self.assertEqual(
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            request.FailedSmartServerResponse(expected_translation),
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            handler.response)
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    def test_error_translation_from_args_received(self):
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        handler = request.SmartServerRequestHandler(
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            None, {'foo': DoErrorRequest}, '/')
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        handler.args_received(('foo',))
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        self.assertResponseIsTranslatedError(handler)
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    def test_error_translation_from_chunk_received(self):
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        handler = request.SmartServerRequestHandler(
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            None, {'foo': ChunkErrorRequest}, '/')
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        handler.args_received(('foo',))
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        self.assertNoResponse(handler)
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        handler.accept_body('bytes')
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        self.assertResponseIsTranslatedError(handler)
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    def test_error_translation_from_end_received(self):
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        handler = request.SmartServerRequestHandler(
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            None, {'foo': EndErrorRequest}, '/')
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        handler.args_received(('foo',))
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        self.assertNoResponse(handler)
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        handler.end_received()
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        self.assertResponseIsTranslatedError(handler)
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class TestRequestHanderErrorTranslation(TestCase):
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    """Tests for bzrlib.smart.request._translate_error."""
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    def assertTranslationEqual(self, expected_tuple, error):
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        self.assertEqual(expected_tuple, request._translate_error(error))
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157
 
    def test_NoSuchFile(self):
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        self.assertTranslationEqual(
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            ('NoSuchFile', 'path'), errors.NoSuchFile('path'))
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    def test_LockContention(self):
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        # For now, LockContentions are always transmitted with no details.
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        # Eventually they should include a relpath or url or something else to
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        # identify which lock is busy.
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        self.assertTranslationEqual(
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            ('LockContention',), errors.LockContention('lock', 'msg'))
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    def test_TokenMismatch(self):
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        self.assertTranslationEqual(
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            ('TokenMismatch', 'some-token', 'actual-token'),
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            errors.TokenMismatch('some-token', 'actual-token'))
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174
 
class TestRequestJail(TestCaseWithMemoryTransport):
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    def test_jail(self):
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        transport = self.get_transport('blah')
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        req = request.SmartServerRequest(transport)
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        self.assertEqual(None, request.jail_info.transports)
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        req.setup_jail()
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        self.assertEqual([transport], request.jail_info.transports)
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        req.teardown_jail()
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        self.assertEqual(None, request.jail_info.transports)
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186
 
class TestJailHook(TestCaseWithMemoryTransport):
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188
 
    def tearDown(self):
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        request.jail_info.transports = None
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        TestCaseWithMemoryTransport.tearDown(self)
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192
 
    def test_jail_hook(self):
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        request.jail_info.transports = None
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        _pre_open_hook = request._pre_open_hook
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        # Any transport is fine if jail_info.transports is None
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        t = self.get_transport('foo')
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        _pre_open_hook(t)
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        # A transport in jail_info.transports is allowed
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        request.jail_info.transports = [t]
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        _pre_open_hook(t)
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        # A child of a transport in jail_info is allowed
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        _pre_open_hook(t.clone('child'))
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        # A parent is not allowed
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        self.assertRaises(errors.JailBreak, _pre_open_hook, t.clone('..'))
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        # A completely unrelated transport is not allowed
206
 
        self.assertRaises(
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            errors.JailBreak, _pre_open_hook, get_transport('http://host/'))
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209
 
    def test_open_bzrdir_in_non_main_thread(self):
210
 
        """Opening a bzrdir in a non-main thread should work ok.
211
 
        
212
 
        This makes sure that the globally-installed
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        bzrlib.smart.request._pre_open_hook, which uses a threading.local(),
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        works in a newly created thread.
215
 
        """
216
 
        bzrdir = self.make_bzrdir('.')
217
 
        transport = bzrdir.root_transport
218
 
        thread_result = []
219
 
        def t():
220
 
            BzrDir.open_from_transport(transport)
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            thread_result.append('ok')
222
 
        thread = threading.Thread(target=t)
223
 
        thread.start()
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        thread.join()
225
 
        self.assertEqual(['ok'], thread_result)
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