~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2004, 2005, 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 branch.push behaviour."""

import os

from bzrlib.branch import Branch

from bzrlib import errors

from bzrlib.memorytree import MemoryTree

from bzrlib.revision import NULL_REVISION

from bzrlib.tests.branch_implementations.test_branch import TestCaseWithBranch

class TestPush(TestCaseWithBranch):

    def test_push_convergence_simple(self):

        # when revisions are pushed, the left-most accessible parents must 

        # become the revision-history.

        mine = self.make_branch_and_tree('mine')

        mine.commit('1st post', rev_id='P1', allow_pointless=True)

        other = mine.bzrdir.sprout('other').open_workingtree()

        other.commit('my change', rev_id='M1', allow_pointless=True)

        mine.merge_from_branch(other.branch)

        mine.commit('merge my change', rev_id='P2')

        result = mine.branch.push(other.branch)

        self.assertEqual(['P1', 'P2'], other.branch.revision_history())

        # result object contains some structured data

        self.assertEqual(result.old_revid, 'M1')

        self.assertEqual(result.new_revid, 'P2')

        # and it can be treated as an integer for compatibility

        self.assertEqual(int(result), 0)

    def test_push_merged_indirect(self):

        # it should be possible to do a push from one branch into another

        # when the tip of the target was merged into the source branch

        # via a third branch - so its buried in the ancestry and is not

        # directly accessible.

        mine = self.make_branch_and_tree('mine')

        mine.commit('1st post', rev_id='P1', allow_pointless=True)

        target = mine.bzrdir.sprout('target').open_workingtree()

        target.commit('my change', rev_id='M1', allow_pointless=True)

        other = mine.bzrdir.sprout('other').open_workingtree()

        other.merge_from_branch(target.branch)

        other.commit('merge my change', rev_id='O2')

        mine.merge_from_branch(other.branch)

        mine.commit('merge other', rev_id='P2')

        mine.branch.push(target.branch)

        self.assertEqual(['P1', 'P2'], target.branch.revision_history())

    def test_push_to_checkout_updates_master(self):

        """Pushing into a checkout updates the checkout and the master branch"""

        master_tree = self.make_branch_and_tree('master')

        checkout = self.make_branch_and_tree('checkout')

        try:

            checkout.branch.bind(master_tree.branch)

        except errors.UpgradeRequired:

            # cant bind this format, the test is irrelevant.

            return

        rev1 = checkout.commit('master')

        other = master_tree.branch.bzrdir.sprout('other').open_workingtree()

        rev2 = other.commit('other commit')

        # now push, which should update both checkout and master.

        other.branch.push(checkout.branch)

        self.assertEqual([rev1, rev2], checkout.branch.revision_history())

        self.assertEqual([rev1, rev2], master_tree.branch.revision_history())

    def test_push_raises_specific_error_on_master_connection_error(self):

        master_tree = self.make_branch_and_tree('master')

        checkout = self.make_branch_and_tree('checkout')

        try:

            checkout.branch.bind(master_tree.branch)

        except errors.UpgradeRequired:

            # cant bind this format, the test is irrelevant.

            return

        other = master_tree.branch.bzrdir.sprout('other').open_workingtree()

        # move the branch out of the way on disk to cause a connection

        # error.

        os.rename('master', 'master_gone')

        # try to push, which should raise a BoundBranchConnectionFailure.

        self.assertRaises(errors.BoundBranchConnectionFailure,

                other.branch.push, checkout.branch)

    def test_push_uses_read_lock(self):

        """Push should only need a read lock on the source side."""

        source = self.make_branch_and_tree('source')

        target = self.make_branch('target')

        self.build_tree(['source/a'])

        source.add(['a'])

        source.commit('a')

        source.branch.lock_read()

        try:

            target.lock_write()

            try:

                source.branch.push(target, stop_revision=source.last_revision())

            finally:

                target.unlock()

        finally:

            source.branch.unlock()

    def test_push_within_repository(self):

        """Push from one branch to another inside the same repository."""

        try:

            repo = self.make_repository('repo', shared=True)

        except (errors.IncompatibleFormat, errors.UninitializableFormat):

            # This Branch format cannot create shared repositories

            return

        # This is a little bit trickier because make_branch_and_tree will not

        # re-use a shared repository.

        a_bzrdir = self.make_bzrdir('repo/tree')

        try:

            a_branch = self.branch_format.initialize(a_bzrdir)

        except (errors.UninitializableFormat):

            # Cannot create these branches

            return

        tree = a_branch.bzrdir.create_workingtree()

        self.build_tree(['repo/tree/a'])

        tree.add(['a'])

        tree.commit('a')

        to_bzrdir = self.make_bzrdir('repo/branch')

        to_branch = self.branch_format.initialize(to_bzrdir)

        tree.branch.push(to_branch)

        self.assertEqual(tree.branch.last_revision(),

                         to_branch.last_revision())

class TestPushHook(TestCaseWithBranch):

    def setUp(self):

        self.hook_calls = []

        TestCaseWithBranch.setUp(self)

    def capture_post_push_hook(self, result):

        """Capture post push hook calls to self.hook_calls.

        The call is logged, as is some state of the two branches.

        """

        if result.local_branch:

            local_locked = result.local_branch.is_locked()

            local_base = result.local_branch.base

        else:

            local_locked = None

            local_base = None

        self.hook_calls.append(

            ('post_push', result.source_branch, local_base,

             result.master_branch.base,

             result.old_revno, result.old_revid,

             result.new_revno, result.new_revid,

             result.source_branch.is_locked(), local_locked,

             result.master_branch.is_locked()))

    def test_post_push_empty_history(self):

        target = self.make_branch('target')

        source = self.make_branch('source')

        Branch.hooks.install_hook('post_push', self.capture_post_push_hook)

        source.push(target)

        # with nothing there we should still get a notification, and

        # have both branches locked at the notification time.

        self.assertEqual([

            ('post_push', source, None, target.base, 0, NULL_REVISION,

             0, NULL_REVISION, True, None, True)

            ],

            self.hook_calls)

    def test_post_push_bound_branch(self):

        # pushing to a bound branch should pass in the master branch to the

        # hook, allowing the correct number of emails to be sent, while still

        # allowing hooks that want to modify the target to do so to both 

        # instances.

        target = self.make_branch('target')

        local = self.make_branch('local')

        try:

            local.bind(target)

        except errors.UpgradeRequired:

            # cant bind this format, the test is irrelevant.

            return

        source = self.make_branch('source')

        Branch.hooks.install_hook('post_push', self.capture_post_push_hook)

        source.push(local)

        # with nothing there we should still get a notification, and

        # have both branches locked at the notification time.

        self.assertEqual([

            ('post_push', source, local.base, target.base, 0, NULL_REVISION,

             0, NULL_REVISION, True, True, True)

            ],

            self.hook_calls)

    def test_post_push_nonempty_history(self):

        target = self.make_branch_and_memory_tree('target')

        target.lock_write()

        target.add('')

        rev1 = target.commit('rev 1')

        target.unlock()

        sourcedir = target.bzrdir.clone(self.get_url('source'))

        source = MemoryTree.create_on_branch(sourcedir.open_branch())

        rev2 = source.commit('rev 2')

        Branch.hooks.install_hook('post_push', self.capture_post_push_hook)

        source.branch.push(target.branch)

        # with nothing there we should still get a notification, and

        # have both branches locked at the notification time.

        self.assertEqual([

            ('post_push', source.branch, None, target.branch.base, 1, rev1,

             2, rev2, True, None, True)

            ],

            self.hook_calls)