/brz/remove-bazaar

# Copyright (C) 2006, 2007, 2009, 2010 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 WorkingTree.revision_tree.

These tests are in addition to the tests from

per_tree.test_revision_tree which cover the behaviour expected from

all Trees. WorkingTrees implement the revision_tree api to allow access to

cached data, but we don't require that all WorkingTrees have such a cache,

so these tests are testing that when there is a cache, it performs correctly.

"""

from breezy import (

    errors,

    tests,

    )

from breezy.tests import per_workingtree

class TestRevisionTree(per_workingtree.TestCaseWithWorkingTree):

    def test_get_zeroth_basis_tree_via_revision_tree(self):

        tree = self.make_branch_and_tree('.')

        try:

            revision_tree = tree.revision_tree(tree.last_revision())

        except errors.NoSuchRevision:

            # its ok for a working tree to not cache trees, so just return.

            return

        basis_tree = tree.basis_tree()

        self.assertTreesEqual(revision_tree, basis_tree)

    def test_get_nonzeroth_basis_tree_via_revision_tree(self):

        tree = self.make_branch_and_tree('.')

        revision1 = tree.commit('first post')

        revision_tree = tree.revision_tree(revision1)

        basis_tree = tree.basis_tree()

        self.assertTreesEqual(revision_tree, basis_tree)

    def test_get_pending_merge_revision_tree(self):

        tree = self.make_branch_and_tree('tree1')

        tree.commit('first post')

        tree2 = tree.controldir.sprout('tree2').open_workingtree()

        revision1 = tree2.commit('commit in branch', allow_pointless=True)

        tree.merge_from_branch(tree2.branch)

        try:

            cached_revision_tree = tree.revision_tree(revision1)

        except errors.NoSuchRevision:

            # its ok for a working tree to not cache trees, so just return.

            return

        real_revision_tree = tree2.basis_tree()

        self.assertTreesEqual(real_revision_tree, cached_revision_tree)

    def test_get_uncached_basis_via_revision_tree(self):

        # The basis_tree method returns an empty tree when you ask for the

        # basis if the basis is not cached, and it is a ghost. However the

        # revision_tree method should always raise when a request tree is not

        # cached, so we force this by setting a basis that is a ghost and

        # thus cannot be cached.

        tree = self.make_branch_and_tree('.')

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

            self.skipTest('format does not support ghosts')

        tree.set_parent_ids([b'a-ghost'], allow_leftmost_as_ghost=True)

        self.assertRaises(errors.NoSuchRevision,

                          tree.revision_tree, b'a-ghost')

    def test_revision_tree_different_root_id(self):

        """A revision tree might have a very different root."""

        tree = self.make_branch_and_tree('tree1')

        if not tree.supports_setting_file_ids():

            raise tests.TestNotApplicable(

                'tree does not support setting file ids')

        tree.set_root_id(b'one')

        rev1 = tree.commit('first post')

        tree.set_root_id(b'two')

        try:

            cached_revision_tree = tree.revision_tree(rev1)

        except errors.NoSuchRevision:

            # its ok for a working tree to not cache trees, so just return.

            return

        repository_revision_tree = tree.branch.repository.revision_tree(rev1)

        self.assertTreesEqual(repository_revision_tree, cached_revision_tree)

class TestRevisionTreeKind(per_workingtree.TestCaseWithWorkingTree):

    def make_branch_with_merged_deletions(self, relpath='tree'):

        tree = self.make_branch_and_tree(relpath)

        files = ['a', 'b/', 'b/c']

        self.build_tree(files, line_endings='binary',

                        transport=tree.controldir.root_transport)

        tree.add(files)

        base_revid = tree.commit('a, b and b/c')

        tree2 = tree.controldir.sprout(relpath + '2').open_workingtree()

        # Delete 'a' in tree

        tree.remove('a', keep_files=False)

        this_revid = tree.commit('remove a')

        # Delete 'c' in tree2

        tree2.remove('b/c', keep_files=False)

        tree2.remove('b', keep_files=False)

        other_revid = tree2.commit('remove b/c')

        # Merge tree2 into tree

        tree.merge_from_branch(tree2.branch)

        return tree, [base_revid, this_revid, other_revid]

    def test_kind_parent_tree(self):

        tree, [base_revid, this_revid,

               other_revid] = self.make_branch_with_merged_deletions()

        tree.lock_read()

        self.addCleanup(tree.unlock)

        parents = tree.get_parent_ids()

        self.assertEqual([this_revid, other_revid], parents)

        basis = tree.revision_tree(parents[0])

        basis.lock_read()

        self.addCleanup(basis.unlock)

        self.assertRaises(errors.NoSuchFile, basis.kind, 'a')

        self.assertEqual(['directory', 'file'],

                         [basis.kind('b'), basis.kind('b/c')])

        try:

            other = tree.revision_tree(parents[1])

        except errors.NoSuchRevisionInTree:

            raise tests.TestNotApplicable(

                'Tree type %s caches only the basis revision tree.'

                % type(tree))

        other.lock_read()

        self.addCleanup(other.unlock)

        self.assertRaises(errors.NoSuchFile, other.kind, 'b')

        self.assertRaises(errors.NoSuchFile, other.kind, 'c')

        self.assertEqual('file', other.kind('a'))