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1
# Copyright (C) 2004, 2005, 2007 Canonical Ltd
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
16
 
 
17
"""Tests for branch.push behaviour."""
 
18
 
 
19
import os
 
20
 
 
21
from bzrlib import (
 
22
    branch,
 
23
    builtins,
 
24
    bzrdir,
 
25
    debug,
 
26
    errors,
 
27
    tests,
 
28
    )
 
29
from bzrlib.branch import Branch
 
30
from bzrlib.bzrdir import BzrDir
 
31
from bzrlib.memorytree import MemoryTree
 
32
from bzrlib.revision import NULL_REVISION
 
33
from bzrlib.smart import client, server
 
34
from bzrlib.tests.branch_implementations.test_branch import TestCaseWithBranch
 
35
from bzrlib.transport import get_transport
 
36
from bzrlib.transport.local import LocalURLServer
 
37
 
 
38
 
 
39
class TestPush(TestCaseWithBranch):
 
40
 
 
41
    def test_push_convergence_simple(self):
 
42
        # when revisions are pushed, the left-most accessible parents must 
 
43
        # become the revision-history.
 
44
        mine = self.make_branch_and_tree('mine')
 
45
        mine.commit('1st post', rev_id='P1', allow_pointless=True)
 
46
        other = mine.bzrdir.sprout('other').open_workingtree()
 
47
        other.commit('my change', rev_id='M1', allow_pointless=True)
 
48
        mine.merge_from_branch(other.branch)
 
49
        mine.commit('merge my change', rev_id='P2')
 
50
        result = mine.branch.push(other.branch)
 
51
        self.assertEqual(['P1', 'P2'], other.branch.revision_history())
 
52
        # result object contains some structured data
 
53
        self.assertEqual(result.old_revid, 'M1')
 
54
        self.assertEqual(result.new_revid, 'P2')
 
55
        # and it can be treated as an integer for compatibility
 
56
        self.assertEqual(int(result), 0)
 
57
 
 
58
    def test_push_merged_indirect(self):
 
59
        # it should be possible to do a push from one branch into another
 
60
        # when the tip of the target was merged into the source branch
 
61
        # via a third branch - so its buried in the ancestry and is not
 
62
        # directly accessible.
 
63
        mine = self.make_branch_and_tree('mine')
 
64
        mine.commit('1st post', rev_id='P1', allow_pointless=True)
 
65
        target = mine.bzrdir.sprout('target').open_workingtree()
 
66
        target.commit('my change', rev_id='M1', allow_pointless=True)
 
67
        other = mine.bzrdir.sprout('other').open_workingtree()
 
68
        other.merge_from_branch(target.branch)
 
69
        other.commit('merge my change', rev_id='O2')
 
70
        mine.merge_from_branch(other.branch)
 
71
        mine.commit('merge other', rev_id='P2')
 
72
        mine.branch.push(target.branch)
 
73
        self.assertEqual(['P1', 'P2'], target.branch.revision_history())
 
74
 
 
75
    def test_push_to_checkout_updates_master(self):
 
76
        """Pushing into a checkout updates the checkout and the master branch"""
 
77
        master_tree = self.make_branch_and_tree('master')
 
78
        checkout = self.make_branch_and_tree('checkout')
 
79
        try:
 
80
            checkout.branch.bind(master_tree.branch)
 
81
        except errors.UpgradeRequired:
 
82
            # cant bind this format, the test is irrelevant.
 
83
            return
 
84
        rev1 = checkout.commit('master')
 
85
 
 
86
        other = master_tree.branch.bzrdir.sprout('other').open_workingtree()
 
87
        rev2 = other.commit('other commit')
 
88
        # now push, which should update both checkout and master.
 
89
        other.branch.push(checkout.branch)
 
90
        self.assertEqual([rev1, rev2], checkout.branch.revision_history())
 
91
        self.assertEqual([rev1, rev2], master_tree.branch.revision_history())
 
92
 
 
93
    def test_push_raises_specific_error_on_master_connection_error(self):
 
94
        master_tree = self.make_branch_and_tree('master')
 
95
        checkout = self.make_branch_and_tree('checkout')
 
96
        try:
 
97
            checkout.branch.bind(master_tree.branch)
 
98
        except errors.UpgradeRequired:
 
99
            # cant bind this format, the test is irrelevant.
 
100
            return
 
101
        other = master_tree.branch.bzrdir.sprout('other').open_workingtree()
 
102
        # move the branch out of the way on disk to cause a connection
 
103
        # error.
 
104
        os.rename('master', 'master_gone')
 
105
        # try to push, which should raise a BoundBranchConnectionFailure.
 
106
        self.assertRaises(errors.BoundBranchConnectionFailure,
 
107
                other.branch.push, checkout.branch)
 
108
 
 
109
    def test_push_uses_read_lock(self):
 
110
        """Push should only need a read lock on the source side."""
 
111
        source = self.make_branch_and_tree('source')
 
112
        target = self.make_branch('target')
 
113
 
 
114
        self.build_tree(['source/a'])
 
115
        source.add(['a'])
 
116
        source.commit('a')
 
117
 
 
118
        source.branch.lock_read()
 
119
        try:
 
120
            target.lock_write()
 
121
            try:
 
122
                source.branch.push(target, stop_revision=source.last_revision())
 
123
            finally:
 
124
                target.unlock()
 
125
        finally:
 
126
            source.branch.unlock()
 
127
 
 
128
    def test_push_within_repository(self):
 
129
        """Push from one branch to another inside the same repository."""
 
130
        try:
 
131
            repo = self.make_repository('repo', shared=True)
 
132
        except (errors.IncompatibleFormat, errors.UninitializableFormat):
 
133
            # This Branch format cannot create shared repositories
 
134
            return
 
135
        # This is a little bit trickier because make_branch_and_tree will not
 
136
        # re-use a shared repository.
 
137
        a_bzrdir = self.make_bzrdir('repo/tree')
 
138
        try:
 
139
            a_branch = self.branch_format.initialize(a_bzrdir)
 
140
        except (errors.UninitializableFormat):
 
141
            # Cannot create these branches
 
142
            return
 
143
        try:
 
144
            tree = a_branch.bzrdir.create_workingtree()
 
145
        except errors.NotLocalUrl:
 
146
            if self.vfs_transport_factory is LocalURLServer:
 
147
                # the branch is colocated on disk, we cannot create a checkout.
 
148
                # hopefully callers will expect this.
 
149
                local_controldir= bzrdir.BzrDir.open(self.get_vfs_only_url('repo/tree'))
 
150
                tree = local_controldir.create_workingtree()
 
151
            else:
 
152
                tree = a_branch.create_checkout('repo/tree', lightweight=True)
 
153
        self.build_tree(['repo/tree/a'])
 
154
        tree.add(['a'])
 
155
        tree.commit('a')
 
156
 
 
157
        to_bzrdir = self.make_bzrdir('repo/branch')
 
158
        to_branch = self.branch_format.initialize(to_bzrdir)
 
159
        tree.branch.push(to_branch)
 
160
 
 
161
        self.assertEqual(tree.branch.last_revision(),
 
162
                         to_branch.last_revision())
 
163
 
 
164
    def test_push_overwrite_of_non_tip_with_stop_revision(self):
 
165
        """Combining the stop_revision and overwrite options works.
 
166
        
 
167
        This was <https://bugs.launchpad.net/bzr/+bug/234229>.
 
168
        """
 
169
        source = self.make_branch_and_tree('source')
 
170
        target = self.make_branch('target')
 
171
 
 
172
        source.commit('1st commit')
 
173
        source.branch.push(target)
 
174
        source.commit('2nd commit', rev_id='rev-2')
 
175
        source.commit('3rd commit')
 
176
 
 
177
        source.branch.push(target, stop_revision='rev-2', overwrite=True)
 
178
        self.assertEqual('rev-2', target.last_revision())
 
179
 
 
180
 
 
181
class TestPushHook(TestCaseWithBranch):
 
182
 
 
183
    def setUp(self):
 
184
        self.hook_calls = []
 
185
        TestCaseWithBranch.setUp(self)
 
186
 
 
187
    def capture_post_push_hook(self, result):
 
188
        """Capture post push hook calls to self.hook_calls.
 
189
        
 
190
        The call is logged, as is some state of the two branches.
 
191
        """
 
192
        if result.local_branch:
 
193
            local_locked = result.local_branch.is_locked()
 
194
            local_base = result.local_branch.base
 
195
        else:
 
196
            local_locked = None
 
197
            local_base = None
 
198
        self.hook_calls.append(
 
199
            ('post_push', result.source_branch, local_base,
 
200
             result.master_branch.base,
 
201
             result.old_revno, result.old_revid,
 
202
             result.new_revno, result.new_revid,
 
203
             result.source_branch.is_locked(), local_locked,
 
204
             result.master_branch.is_locked()))
 
205
 
 
206
    def test_post_push_empty_history(self):
 
207
        target = self.make_branch('target')
 
208
        source = self.make_branch('source')
 
209
        Branch.hooks.install_named_hook('post_push',
 
210
                                        self.capture_post_push_hook, None)
 
211
        source.push(target)
 
212
        # with nothing there we should still get a notification, and
 
213
        # have both branches locked at the notification time.
 
214
        self.assertEqual([
 
215
            ('post_push', source, None, target.base, 0, NULL_REVISION,
 
216
             0, NULL_REVISION, True, None, True)
 
217
            ],
 
218
            self.hook_calls)
 
219
 
 
220
    def test_post_push_bound_branch(self):
 
221
        # pushing to a bound branch should pass in the master branch to the
 
222
        # hook, allowing the correct number of emails to be sent, while still
 
223
        # allowing hooks that want to modify the target to do so to both 
 
224
        # instances.
 
225
        target = self.make_branch('target')
 
226
        local = self.make_branch('local')
 
227
        try:
 
228
            local.bind(target)
 
229
        except errors.UpgradeRequired:
 
230
            # We can't bind this format to itself- typically it is the local
 
231
            # branch that doesn't support binding.  As of May 2007
 
232
            # remotebranches can't be bound.  Let's instead make a new local
 
233
            # branch of the default type, which does allow binding.
 
234
            # See https://bugs.launchpad.net/bzr/+bug/112020
 
235
            local = BzrDir.create_branch_convenience('local2')
 
236
            local.bind(target)
 
237
        source = self.make_branch('source')
 
238
        Branch.hooks.install_named_hook('post_push',
 
239
                                        self.capture_post_push_hook, None)
 
240
        source.push(local)
 
241
        # with nothing there we should still get a notification, and
 
242
        # have both branches locked at the notification time.
 
243
        self.assertEqual([
 
244
            ('post_push', source, local.base, target.base, 0, NULL_REVISION,
 
245
             0, NULL_REVISION, True, True, True)
 
246
            ],
 
247
            self.hook_calls)
 
248
 
 
249
    def test_post_push_nonempty_history(self):
 
250
        target = self.make_branch_and_memory_tree('target')
 
251
        target.lock_write()
 
252
        target.add('')
 
253
        rev1 = target.commit('rev 1')
 
254
        target.unlock()
 
255
        sourcedir = target.bzrdir.clone(self.get_url('source'))
 
256
        source = MemoryTree.create_on_branch(sourcedir.open_branch())
 
257
        rev2 = source.commit('rev 2')
 
258
        Branch.hooks.install_named_hook('post_push',
 
259
                                        self.capture_post_push_hook, None)
 
260
        source.branch.push(target.branch)
 
261
        # with nothing there we should still get a notification, and
 
262
        # have both branches locked at the notification time.
 
263
        self.assertEqual([
 
264
            ('post_push', source.branch, None, target.branch.base, 1, rev1,
 
265
             2, rev2, True, None, True)
 
266
            ],
 
267
            self.hook_calls)
 
268
 
 
269
 
 
270
class EmptyPushSmartEffortTests(TestCaseWithBranch):
 
271
    """Tests that a push of 0 revisions should make a limited number of smart
 
272
    protocol RPCs.
 
273
    """
 
274
 
 
275
    def setUp(self):
 
276
        # Skip some scenarios that don't apply to these tests.
 
277
        if (self.transport_server is not None and
 
278
            issubclass(self.transport_server, server.SmartTCPServer)):
 
279
            raise tests.TestNotApplicable(
 
280
                'Does not apply when remote backing branch is also '
 
281
                'a smart branch')
 
282
        if isinstance(self.branch_format, branch.BzrBranchFormat4):
 
283
            raise tests.TestNotApplicable(
 
284
                'Branch format 4 is not usable via HPSS.')
 
285
        super(EmptyPushSmartEffortTests, self).setUp()
 
286
        # Create a smart server that publishes whatever the backing VFS server
 
287
        # does.
 
288
        self.smart_server = server.SmartTCPServer_for_testing()
 
289
        self.smart_server.setUp(self.get_server())
 
290
        self.addCleanup(self.smart_server.tearDown)
 
291
        # Make two empty branches, 'empty' and 'target'.
 
292
        self.empty_branch = self.make_branch('empty')
 
293
        self.make_branch('target')
 
294
        # Log all HPSS calls into self.hpss_calls.
 
295
        client._SmartClient.hooks.install_named_hook(
 
296
            'call', self.capture_hpss_call, None)
 
297
        self.hpss_calls = []
 
298
 
 
299
    def capture_hpss_call(self, params):
 
300
        self.hpss_calls.append(params.method)
 
301
 
 
302
    def test_empty_branch_api(self):
 
303
        """The branch_obj.push API should make a limited number of HPSS calls.
 
304
        """
 
305
        transport = get_transport(self.smart_server.get_url()).clone('target')
 
306
        target = Branch.open_from_transport(transport)
 
307
        self.empty_branch.push(target)
 
308
        self.assertEqual(
 
309
            ['BzrDir.open',
 
310
             'BzrDir.open_branch',
 
311
             'BzrDir.find_repositoryV2',
 
312
             'Branch.get_stacked_on_url',
 
313
             'Branch.lock_write',
 
314
             'Branch.last_revision_info',
 
315
             'Branch.unlock'],
 
316
            self.hpss_calls)
 
317
 
 
318
    def test_empty_branch_command(self):
 
319
        """The 'bzr push' command should make a limited number of HPSS calls.
 
320
        """
 
321
        cmd = builtins.cmd_push()
 
322
        cmd.outf = tests.StringIOWrapper()
 
323
        cmd.run(
 
324
            directory=self.get_url() + 'empty',
 
325
            location=self.smart_server.get_url() + 'target')
 
326
        # HPSS calls as of 2008/09/22:
 
327
        # [BzrDir.open, BzrDir.open_branch, BzrDir.find_repositoryV2,
 
328
        # Branch.get_stacked_on_url, get, get, Branch.lock_write,
 
329
        # Branch.last_revision_info, Branch.unlock]
 
330
        self.assertTrue(len(self.hpss_calls) <= 9, self.hpss_calls)
 
331
 
 
332