~bzr-pqm/bzr/bzr.dev

# Copyright (C) 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Tests for Branch.sprout()"""

import os

from bzrlib import (

    branch as _mod_branch,

    errors,

    osutils,

    remote,

    revision as _mod_revision,

    tests,

    )

from bzrlib.tests import (

    features,

    )

from bzrlib.tests.per_branch import TestCaseWithBranch

class TestSprout(TestCaseWithBranch):

    def test_sprout_branch_nickname(self):

        # test the nick name is reset always

        raise tests.TestSkipped('XXX branch sprouting is not yet tested.')

    def test_sprout_branch_parent(self):

        source = self.make_branch('source')

        target = source.bzrdir.sprout(self.get_url('target')).open_branch()

        self.assertEqual(source.bzrdir.root_transport.base, target.get_parent())

    def test_sprout_uses_bzrdir_branch_format(self):

        # branch.sprout(bzrdir) is defined as using the branch format selected

        # by bzrdir; format preservation is achieved by parameterising the

        # bzrdir during bzrdir.sprout, which is where stacking compatibility

        # checks are done. So this test tests that each implementation of

        # Branch.sprout delegates appropriately to the bzrdir which the

        # branch is being created in, rather than testing that the result is

        # in the format that we are testing (which is what would happen if

        # the branch did not delegate appropriately).

        if isinstance(self.branch_format, _mod_branch.BranchReferenceFormat):

            raise tests.TestNotApplicable('cannot sprout to a reference')

        # Start with a format that is unlikely to be the target format

        # We call the super class to allow overriding the format of creation)

        source = tests.TestCaseWithTransport.make_branch(self, 'old-branch',

                                                         format='knit')

        target_bzrdir = self.make_bzrdir('target')

        target_bzrdir.create_repository()

        result_format = self.branch_format

        if isinstance(target_bzrdir, remote.RemoteBzrDir):

            # for a remote bzrdir, we need to parameterise it with a branch

            # format, as, after creation, the newly opened remote objects

            # do not have one unless a branch was created at the time.

            # We use branch format 6 because its not the default, and its not

            # metaweave either.

            target_bzrdir._format.set_branch_format(_mod_branch.BzrBranchFormat6())

            result_format = target_bzrdir._format.get_branch_format()

        target = source.sprout(target_bzrdir)

        if isinstance(target, remote.RemoteBranch):

            # we have to look at the real branch to see whether RemoteBranch

            # did the right thing.

            target._ensure_real()

            target = target._real_branch

        if isinstance(result_format, remote.RemoteBranchFormat):

            # Unwrap a parameterised RemoteBranchFormat for comparison.

            result_format = result_format._custom_format

        self.assertIs(result_format.__class__, target._format.__class__)

    def test_sprout_partial(self):

        # test sprouting with a prefix of the revision-history.

        # also needs not-on-revision-history behaviour defined.

        wt_a = self.make_branch_and_tree('a')

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

        wt_a.add(['one'])

        wt_a.commit('commit one', rev_id='1')

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

        wt_a.add(['two'])

        wt_a.commit('commit two', rev_id='2')

        repo_b = self.make_repository('b')

        repo_a = wt_a.branch.repository

        repo_a.copy_content_into(repo_b)

        br_b = wt_a.branch.sprout(repo_b.bzrdir, revision_id='1')

        self.assertEqual('1', br_b.last_revision())

    def test_sprout_partial_not_in_revision_history(self):

        """We should be able to sprout from any revision in ancestry."""

        wt = self.make_branch_and_tree('source')

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

        wt.add('a')

        wt.commit('rev1', rev_id='rev1')

        wt.commit('rev2-alt', rev_id='rev2-alt')

        wt.set_parent_ids(['rev1'])

        wt.branch.set_last_revision_info(1, 'rev1')

        wt.commit('rev2', rev_id='rev2')

        wt.set_parent_ids(['rev2', 'rev2-alt'])

        wt.commit('rev3', rev_id='rev3')

        repo = self.make_repository('target')

        repo.fetch(wt.branch.repository)

        branch2 = wt.branch.sprout(repo.bzrdir, revision_id='rev2-alt')

        self.assertEqual((2, 'rev2-alt'), branch2.last_revision_info())

        self.assertEqual('rev2-alt', branch2.last_revision())

    def test_sprout_preserves_tags(self):

        """Sprout preserves tags, even tags of absent revisions."""

        try:

            builder = self.make_branch_builder('source')

        except errors.UninitializableFormat:

            raise tests.TestSkipped('Uninitializable branch format')

        builder.build_commit(message="Rev 1", rev_id='rev-1')

        source = builder.get_branch()

        try:

            source.tags.set_tag('tag-a', 'missing-rev')

        except (errors.TagsNotSupported, errors.GhostTagsNotSupported):

            raise tests.TestNotApplicable(

                'Branch format does not support tags or tags to ghosts.')

        # Now source has a tag pointing to an absent revision.  Sprout it.

        target_bzrdir = self.make_repository('target').bzrdir

        new_branch = source.sprout(target_bzrdir)

        # The tag is present in the target

        self.assertEqual('missing-rev', new_branch.tags.lookup_tag('tag-a'))

    def test_sprout_from_any_repo_revision(self):

        """We should be able to sprout from any revision."""

        wt = self.make_branch_and_tree('source')

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

        wt.add('a')

        wt.commit('rev1a', rev_id='rev1a')

        # simulated uncommit

        wt.branch.set_last_revision_info(0, _mod_revision.NULL_REVISION)

        wt.set_last_revision(_mod_revision.NULL_REVISION)

        wt.revert()

        wt.commit('rev1b', rev_id='rev1b')

        wt2 = wt.bzrdir.sprout('target',

            revision_id='rev1a').open_workingtree()

        self.assertEqual('rev1a', wt2.last_revision())

        self.assertPathExists('target/a')

    def test_sprout_with_unicode_symlink(self):

        # this tests bug #272444

        # Since the trigger function seems to be set_parent_trees, there exists

        # also a similar test, with name test_unicode_symlink, in class

        # TestSetParents at file per_workingtree/test_parents.py

        self.requireFeature(features.SymlinkFeature)

        self.requireFeature(features.UnicodeFilenameFeature)

        tree = self.make_branch_and_tree('tree1')

        # The link points to a file whose name is an omega

        # U+03A9 GREEK CAPITAL LETTER OMEGA

        # UTF-8: ce a9  UTF-16BE: 03a9  Decimal: Ω

        target = u'\u03a9'

        link_name = u'\N{Euro Sign}link'

        os.symlink(target, 'tree1/' + link_name)

        tree.add([link_name],['link-id'])

        revision = tree.commit('added a link to a Unicode target')

        tree.bzrdir.sprout('dest')

        self.assertEqual(target, osutils.readlink('dest/' + link_name))

        tree.lock_read()

        self.addCleanup(tree.unlock)

        # Check that the symlink target is safely round-tripped in the trees.

        self.assertEqual(target, tree.get_symlink_target('link-id'))

        self.assertEqual(target,

                         tree.basis_tree().get_symlink_target('link-id'))

    def test_sprout_with_ghost_in_mainline(self):

        tree = self.make_branch_and_tree('tree1')

        if not tree.branch.repository._format.supports_ghosts:

            raise tests.TestNotApplicable(

                "repository format does not support ghosts in mainline")

        tree.set_parent_ids(["spooky"], allow_leftmost_as_ghost=True)

        tree.add('')

        tree.commit('msg1', rev_id='rev1')

        tree.commit('msg2', rev_id='rev2')

        tree.bzrdir.sprout('target', revision_id='rev1')

    def assertBranchHookBranchIsStacked(self, pre_change_params):

        # Just calling will either succeed or fail.

        pre_change_params.branch.get_stacked_on_url()

        self.hook_calls.append(pre_change_params)

    def test_sprout_stacked_hooks_get_stacked_branch(self):

        tree = self.make_branch_and_tree('source')

        tree.commit('a commit')

        revid = tree.commit('a second commit')

        source = tree.branch

        target_transport = self.get_transport('target')

        self.hook_calls = []

        _mod_branch.Branch.hooks.install_named_hook("pre_change_branch_tip",

            self.assertBranchHookBranchIsStacked, None)

        try:

            dir = source.bzrdir.sprout(target_transport.base,

                source.last_revision(), possible_transports=[target_transport],

                source_branch=source, stacked=True)

        except errors.UnstackableBranchFormat:

            if not self.branch_format.supports_stacking():

                raise tests.TestNotApplicable(

                    "Format doesn't auto stack successfully.")

            else:

                raise

        result = dir.open_branch()

        self.assertEqual(revid, result.last_revision())

        self.assertEqual(source.base, result.get_stacked_on_url())

        # Smart servers invoke hooks on both sides

        if isinstance(result, remote.RemoteBranch):

            expected_calls = 2

        else:

            expected_calls = 1

        self.assertEqual(expected_calls, len(self.hook_calls))