~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.pull 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 TestPull(TestCaseWithBranch):

    def test_pull_convergence_simple(self):

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

        # become the revision-history.

        parent = self.make_branch_and_tree('parent')

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

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

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

        parent.merge_from_branch(mine.branch)

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

        mine.pull(parent.branch)

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

    def test_pull_merged_indirect(self):

        # it should be possible to do a pull 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.

        parent = self.make_branch_and_tree('parent')

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

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

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

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

        other.merge_from_branch(mine.branch)

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

        parent.merge_from_branch(other.branch)

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

        mine.pull(parent.branch)

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

    def test_pull_updates_checkout_and_master(self):

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

        master_tree = self.make_branch_and_tree('master')

        rev1 = master_tree.commit('master')

        checkout = master_tree.branch.create_checkout('checkout')

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

        rev2 = other.commit('other commit')

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

        checkout.branch.pull(other.branch)

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

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

    def test_pull_raises_specific_error_on_master_connection_error(self):

        master_tree = self.make_branch_and_tree('master')

        checkout = master_tree.branch.create_checkout('checkout')

        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 pull, which should raise a BoundBranchConnectionFailure.

        self.assertRaises(errors.BoundBranchConnectionFailure,

                checkout.branch.pull, other.branch)

    def test_pull_overwrite(self):

        tree_a = self.make_branch_and_tree('tree_a')

        tree_a.commit('message 1')

        tree_b = tree_a.bzrdir.sprout('tree_b').open_workingtree()

        tree_a.commit('message 2', rev_id='rev2a')

        tree_b.commit('message 2', rev_id='rev2b')

        self.assertRaises(errors.DivergedBranches, tree_a.pull, tree_b.branch)

        tree_a.branch.pull(tree_a.branch, overwrite=True,

                           stop_revision='rev2b')

        self.assertEqual('rev2b', tree_a.branch.last_revision())

        self.assertEqual(tree_b.branch.revision_history(),

                         tree_a.branch.revision_history())

class TestPullHook(TestCaseWithBranch):

    def setUp(self):

        self.hook_calls = []

        TestCaseWithBranch.setUp(self)

    def capture_post_pull_hook(self, result):

        """Capture post pull 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_pull', 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_pull_empty_history(self):

        target = self.make_branch('target')

        source = self.make_branch('source')

        Branch.hooks.install_hook('post_pull', self.capture_post_pull_hook)

        target.pull(source)

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

        # have both branches locked at the notification time.

        self.assertEqual([

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

             0, NULL_REVISION, True, None, True)

            ],

            self.hook_calls)

    def test_post_pull_bound_branch(self):

        # pulling 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_pull', self.capture_post_pull_hook)

        local.pull(source)

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

        # have both branches locked at the notification time.

        self.assertEqual([

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

             0, NULL_REVISION, True, True, True)

            ],

            self.hook_calls)

    def test_post_pull_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_pull', self.capture_post_pull_hook)

        target.branch.pull(source.branch)

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

        # have both branches locked at the notification time.

        self.assertEqual([

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

             2, rev2, True, None, True)

            ],

            self.hook_calls)