/brz/remove-bazaar

# Copyright (C) 2006, 2007 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 remote bzrdir/branch/repo/etc

These are proxy objects which act on remote objects by sending messages

through a smart client.  The proxies are to be created when attempting to open

the object given a transport that supports smartserver rpc operations. 

"""

from cStringIO import StringIO

from bzrlib import bzrdir, remote, tests

from bzrlib.branch import Branch

from bzrlib.bzrdir import BzrDir, BzrDirFormat

from bzrlib.errors import NoSuchRevision

from bzrlib.remote import (

    RemoteBranch,

    RemoteBzrDir,

    RemoteBzrDirFormat,

    RemoteRepository,

    )

from bzrlib.revision import NULL_REVISION

from bzrlib.smart import server

from bzrlib.smart.client import SmartClient

from bzrlib.transport import remote as remote_transport

from bzrlib.transport.memory import MemoryTransport

class BasicRemoteObjectTests(tests.TestCaseWithTransport):

    def setUp(self):

        super(BasicRemoteObjectTests, self).setUp()

        self.transport_server = server.SmartTCPServer_for_testing

        self.transport = self.get_transport()

        self.client = self.transport.get_smart_client()

        # make a branch that can be opened over the smart transport

        self.local_wt = BzrDir.create_standalone_workingtree('.')

    def test_create_remote_bzrdir(self):

        b = remote.RemoteBzrDir(self.transport)

        self.assertIsInstance(b, BzrDir)

    def test_open_remote_branch(self):

        # open a standalone branch in the working directory

        b = remote.RemoteBzrDir(self.transport)

        branch = b.open_branch()

    def test_remote_repository(self):

        b = BzrDir.open_from_transport(self.transport)

        repo = b.open_repository()

        revid = u'\xc823123123'

        self.assertFalse(repo.has_revision(revid))

        self.local_wt.commit(message='test commit', rev_id=revid)

        self.assertTrue(repo.has_revision(revid))

    def test_remote_branch_revision_history(self):

        b = BzrDir.open_from_transport(self.transport).open_branch()

        self.assertEqual([], b.revision_history())

        r1 = self.local_wt.commit('1st commit')

        r2 = self.local_wt.commit('1st commit', rev_id=u'\xc8')

        self.assertEqual([r1, r2], b.revision_history())

    def test_find_correct_format(self):

        """Should open a RemoteBzrDir over a RemoteTransport"""

        fmt = BzrDirFormat.find_format(self.transport)

        self.assertTrue(RemoteBzrDirFormat in BzrDirFormat._control_formats)

        self.assertIsInstance(fmt, remote.RemoteBzrDirFormat)

    def test_open_detected_smart_format(self):

        fmt = BzrDirFormat.find_format(self.transport)

        d = fmt.open(self.transport)

        self.assertIsInstance(d, BzrDir)

class FakeProtocol(object):

    """Lookalike SmartClientRequestProtocolOne allowing body reading tests."""

    def __init__(self, body):

        self._body_buffer = StringIO(body)

    def read_body_bytes(self, count=-1):

        return self._body_buffer.read(count)

class FakeClient(SmartClient):

    """Lookalike for SmartClient allowing testing."""

    def __init__(self, responses):

        # We don't call the super init because there is no medium.

        """create a FakeClient.

        :param respones: A list of response-tuple, body-data pairs to be sent

            back to callers.

        """

        self.responses = responses

        self._calls = []

    def call(self, method, *args):

        self._calls.append(('call', method, args))

        return self.responses.pop(0)[0]

    def call2(self, method, *args):

        self._calls.append(('call2', method, args))

        result = self.responses.pop(0)

        return result[0], FakeProtocol(result[1])

class TestBranchLastRevisionInfo(tests.TestCase):

    def test_empty_branch(self):

        # in an empty branch we decode the response properly

        client = FakeClient([(('ok', '0', ''), )])

        transport = MemoryTransport()

        transport.mkdir('quack')

        transport = transport.clone('quack')

        # we do not want bzrdir to make any remote calls

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        result = branch.last_revision_info()

        self.assertEqual(

            [('call', 'Branch.last_revision_info', ('///quack/',))],

            client._calls)

        self.assertEqual((0, NULL_REVISION), result)

    def test_non_empty_branch(self):

        # in a non-empty branch we also decode the response properly

        client = FakeClient([(('ok', '2', u'\xc8'.encode('utf8')), )])

        transport = MemoryTransport()

        transport.mkdir('kwaak')

        transport = transport.clone('kwaak')

        # we do not want bzrdir to make any remote calls

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        result = branch.last_revision_info()

        self.assertEqual(

            [('call', 'Branch.last_revision_info', ('///kwaak/',))],

            client._calls)

        self.assertEqual((2, u'\xc8'), result)

class TestBranchSetLastRevision(tests.TestCase):

    def test_set_empty(self):

        # set_revision_history([]) is translated to calling

        # Branch.set_last_revision(path, '') on the wire.

        client = FakeClient([(('ok',), )])

        transport = MemoryTransport()

        transport.mkdir('branch')

        transport = transport.clone('branch')

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        result = branch.set_revision_history([])

        self.assertEqual(

            [('call', 'Branch.set_last_revision', ('///branch/', ''))],

            client._calls)

        self.assertEqual(None, result)

    def test_set_nonempty(self):

        # set_revision_history([rev-id1, ..., rev-idN]) is translated to calling

        # Branch.set_last_revision(path, rev-idN) on the wire.

        client = FakeClient([(('ok',), )])

        transport = MemoryTransport()

        transport.mkdir('branch')

        transport = transport.clone('branch')

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        result = branch.set_revision_history(['rev-id1', 'rev-id2'])

        self.assertEqual(

            [('call', 'Branch.set_last_revision', ('///branch/', 'rev-id2'))],

            client._calls)

        self.assertEqual(None, result)

    def test_no_such_revision(self):

        # A response of 'NoSuchRevision' is translated into an exception.

        client = FakeClient([(('NoSuchRevision', 'rev-id'), )])

        transport = MemoryTransport()

        transport.mkdir('branch')

        transport = transport.clone('branch')

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        self.assertRaises(

            NoSuchRevision, branch.set_revision_history, ['rev-id'])

class TestBranchControlGetBranchConf(tests.TestCase):

    """Test branch.control_files api munging...

    we special case RemoteBranch.control_files.get('branch.conf') to

    call a specific API so that RemoteBranch's can intercept configuration

    file reading, allowing them to signal to the client about things like

    'email is configured for commits'.

    """

    def test_get_branch_conf(self):

        # in an empty branch we decode the response properly

        client = FakeClient([(('ok', ), 'config file body')])

        transport = MemoryTransport()

        transport.mkdir('quack')

        transport = transport.clone('quack')

        # we do not want bzrdir to make any remote calls

        bzrdir = RemoteBzrDir(transport, _client=False)

        branch = RemoteBranch(bzrdir, None, _client=client)

        result = branch.control_files.get('branch.conf')

        self.assertEqual(

            [('call2', 'Branch.get_config_file', ('///quack/',))],

            client._calls)

        self.assertEqual('config file body', result.read())

class TestRemoteRepository(tests.TestCase):

    def setup_fake_client_and_repository(self, responses, transport_path):

        """Create the fake client and repository for testing with."""

        client = FakeClient(responses)

        transport = MemoryTransport()

        transport.mkdir(transport_path)

        transport = transport.clone(transport_path)

        # we do not want bzrdir to make any remote calls

        bzrdir = RemoteBzrDir(transport, _client=False)

        repo = RemoteRepository(bzrdir, None, _client=client)

        return repo, client

class TestRepositoryGatherStats(TestRemoteRepository):

    def test_revid_none(self):

        # ('ok',), body with revisions and size

        responses = [(('ok', ), 'revisions: 2\nsize: 18\n')]

        transport_path = 'quack'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.gather_stats(None)

        self.assertEqual(

            [('call2', 'Repository.gather_stats', ('///quack/','','no'))],

            client._calls)

        self.assertEqual({'revisions': 2, 'size': 18}, result)

    def test_revid_no_committers(self):

        # ('ok',), body without committers

        responses = [(('ok', ),

                      'firstrev: 123456.300 3600\n'

                      'latestrev: 654231.400 0\n'

                      'revisions: 2\n'

                      'size: 18\n')]

        transport_path = 'quick'

        revid = u'\xc8'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.gather_stats(revid)

        self.assertEqual(

            [('call2', 'Repository.gather_stats',

              ('///quick/', revid.encode('utf8'), 'no'))],

            client._calls)

        self.assertEqual({'revisions': 2, 'size': 18,

                          'firstrev': (123456.300, 3600),

                          'latestrev': (654231.400, 0),},

                         result)

    def test_revid_with_committers(self):

        # ('ok',), body with committers

        responses = [(('ok', ),

                      'committers: 128\n'

                      'firstrev: 123456.300 3600\n'

                      'latestrev: 654231.400 0\n'

                      'revisions: 2\n'

                      'size: 18\n')]

        transport_path = 'buick'

        revid = u'\xc8'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.gather_stats(revid, True)

        self.assertEqual(

            [('call2', 'Repository.gather_stats',

              ('///buick/', revid.encode('utf8'), 'yes'))],

            client._calls)

        self.assertEqual({'revisions': 2, 'size': 18,

                          'committers': 128,

                          'firstrev': (123456.300, 3600),

                          'latestrev': (654231.400, 0),},

                         result)

class TestRepositoryGetRevisionGraph(TestRemoteRepository):

    def test_null_revision(self):

        # a null revision has the predictable result {}, we should have no wire

        # traffic when calling it with this argument

        responses = [(('notused', ), '')]

        transport_path = 'empty'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.get_revision_graph(NULL_REVISION)

        self.assertEqual([], client._calls)

        self.assertEqual({}, result)

    def test_none_revision(self):

        # with none we want the entire graph

        r1 = u'\u0e33'

        r2 = u'\u0dab'

        lines = [' '.join([r2, r1]), r1]

        encoded_body = '\n'.join(lines).encode('utf8')

        responses = [(('ok', ), encoded_body)]

        transport_path = 'sinhala'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.get_revision_graph()

        self.assertEqual(

            [('call2', 'Repository.get_revision_graph', ('///sinhala/', ''))],

            client._calls)

        self.assertEqual({r1: [], r2: [r1]}, result)

    def test_specific_revision(self):

        # with a specific revision we want the graph for that

        # with none we want the entire graph

        r11 = u'\u0e33'

        r12 = u'\xc9'

        r2 = u'\u0dab'

        lines = [' '.join([r2, r11, r12]), r11, r12]

        encoded_body = '\n'.join(lines).encode('utf8')

        responses = [(('ok', ), encoded_body)]

        transport_path = 'sinhala'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.get_revision_graph(r2)

        self.assertEqual(

            [('call2', 'Repository.get_revision_graph', ('///sinhala/', r2.encode('utf8')))],

            client._calls)

        self.assertEqual({r11: [], r12: [], r2: [r11, r12], }, result)

    def test_no_such_revision(self):

        revid = '123'

        responses = [(('nosuchrevision', revid), '')]

        transport_path = 'sinhala'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        # also check that the right revision is reported in the error

        self.assertRaises(NoSuchRevision,

            repo.get_revision_graph, revid)

        self.assertEqual(

            [('call2', 'Repository.get_revision_graph', ('///sinhala/', revid))],

            client._calls)

class TestRepositoryIsShared(TestRemoteRepository):

    def test_is_shared(self):

        # ('yes', ) for Repository.is_shared -> 'True'.

        responses = [(('yes', ), )]

        transport_path = 'quack'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.is_shared()

        self.assertEqual(

            [('call', 'Repository.is_shared', ('///quack/',))],

            client._calls)

        self.assertEqual(True, result)

    def test_is_not_shared(self):

        # ('no', ) for Repository.is_shared -> 'False'.

        responses = [(('no', ), )]

        transport_path = 'qwack'

        repo, client = self.setup_fake_client_and_repository(

            responses, transport_path)

        result = repo.is_shared()

        self.assertEqual(

            [('call', 'Repository.is_shared', ('///qwack/',))],

            client._calls)

        self.assertEqual(False, result)