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# Copyright (C) 2005, 2006 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
import os
from StringIO import StringIO
from bzrlib import (
conflicts,
merge as _mod_merge,
option,
)
from bzrlib.branch import Branch
from bzrlib.builtins import merge
from bzrlib.conflicts import ConflictList, TextConflict
from bzrlib.errors import UnrelatedBranches, NoCommits, BzrCommandError
from bzrlib.merge import transform_tree, merge_inner
from bzrlib.osutils import pathjoin, file_kind
from bzrlib.revision import common_ancestor
from bzrlib.tests import TestCaseWithTransport
from bzrlib.trace import (enable_test_log, disable_test_log)
from bzrlib.workingtree import WorkingTree
class TestMerge(TestCaseWithTransport):
"""Test appending more than one revision"""
def test_pending(self):
wt = self.make_branch_and_tree('.')
rev_a = wt.commit("lala!")
self.assertEqual([rev_a], wt.get_parent_ids())
merge([u'.', -1], [None, None])
self.assertEqual([rev_a], wt.get_parent_ids())
def test_undo(self):
wt = self.make_branch_and_tree('.')
wt.commit("lala!")
wt.commit("haha!")
wt.commit("blabla!")
merge([u'.', 2], [u'.', 1])
def test_nocommits(self):
self.test_pending()
wt2 = self.make_branch_and_tree('branch2')
self.assertRaises(NoCommits, merge, ['branch2', -1],
[None, None])
return wt2
def test_unrelated(self):
wt2 = self.test_nocommits()
wt2.commit("blah")
self.assertRaises(UnrelatedBranches, merge, ['branch2', -1],
[None, None])
return wt2
def test_merge_one_file(self):
"""Do a partial merge of a tree which should not affect tree parents."""
wt1 = self.make_branch_and_tree('branch1')
tip = wt1.commit('empty commit')
wt2 = self.make_branch_and_tree('branch2')
wt2.pull(wt1.branch)
file('branch1/foo', 'wb').write('foo')
file('branch1/bar', 'wb').write('bar')
wt1.add('foo')
wt1.add('bar')
wt1.commit('add foobar')
os.chdir('branch2')
self.run_bzr('merge', '../branch1/baz', retcode=3)
self.run_bzr('merge', '../branch1/foo')
self.failUnlessExists('foo')
self.failIfExists('bar')
wt2 = WorkingTree.open('.') # opens branch2
self.assertEqual([tip], wt2.get_parent_ids())
def test_pending_with_null(self):
"""When base is forced to revno 0, parent_ids are set"""
wt2 = self.test_unrelated()
wt1 = WorkingTree.open('.')
br1 = wt1.branch
br1.fetch(wt2.branch)
# merge all of branch 2 into branch 1 even though they
# are not related.
self.assertRaises(BzrCommandError, merge, ['branch2', -1],
['branch2', 0], reprocess=True, show_base=True)
merge(['branch2', -1], ['branch2', 0], reprocess=True)
self.assertEqual([br1.last_revision(), wt2.branch.last_revision()],
wt1.get_parent_ids())
return (wt1, wt2.branch)
def test_two_roots(self):
"""Merge base is sane when two unrelated branches are merged"""
wt1, br2 = self.test_pending_with_null()
wt1.commit("blah")
last = wt1.branch.last_revision()
self.assertEqual(common_ancestor(last, last, wt1.branch.repository), last)
def test_create_rename(self):
"""Rename an inventory entry while creating the file"""
tree =self.make_branch_and_tree('.')
file('name1', 'wb').write('Hello')
tree.add('name1')
tree.commit(message="hello")
tree.rename_one('name1', 'name2')
os.unlink('name2')
transform_tree(tree, tree.branch.basis_tree())
def test_layered_rename(self):
"""Rename both child and parent at same time"""
tree =self.make_branch_and_tree('.')
os.mkdir('dirname1')
tree.add('dirname1')
filename = pathjoin('dirname1', 'name1')
file(filename, 'wb').write('Hello')
tree.add(filename)
tree.commit(message="hello")
filename2 = pathjoin('dirname1', 'name2')
tree.rename_one(filename, filename2)
tree.rename_one('dirname1', 'dirname2')
transform_tree(tree, tree.branch.basis_tree())
def test_ignore_zero_merge_inner(self):
# Test that merge_inner's ignore zero parameter is effective
tree_a =self.make_branch_and_tree('a')
tree_a.commit(message="hello")
dir_b = tree_a.bzrdir.sprout('b')
tree_b = dir_b.open_workingtree()
tree_a.commit(message="hello again")
log = StringIO()
merge_inner(tree_b.branch, tree_a, tree_b.basis_tree(),
this_tree=tree_b, ignore_zero=True)
log = self._get_log(keep_log_file=True)
self.failUnless('All changes applied successfully.\n' not in log)
tree_b.revert([])
merge_inner(tree_b.branch, tree_a, tree_b.basis_tree(),
this_tree=tree_b, ignore_zero=False)
log = self._get_log(keep_log_file=True)
self.failUnless('All changes applied successfully.\n' in log)
def test_merge_inner_conflicts(self):
tree_a = self.make_branch_and_tree('a')
tree_a.set_conflicts(ConflictList([TextConflict('patha')]))
merge_inner(tree_a.branch, tree_a, tree_a, this_tree=tree_a)
self.assertEqual(1, len(tree_a.conflicts()))
def test_rmdir_conflict(self):
tree_a = self.make_branch_and_tree('a')
self.build_tree(['a/b/'])
tree_a.add('b', 'b-id')
tree_a.commit('added b')
# basis_tree() is only guaranteed to be valid as long as it is actually
# the basis tree. This mutates the tree after grabbing basis, so go to
# the repository.
base_tree = tree_a.branch.repository.revision_tree(tree_a.last_revision())
tree_z = tree_a.bzrdir.sprout('z').open_workingtree()
self.build_tree(['a/b/c'])
tree_a.add('b/c')
tree_a.commit('added c')
os.rmdir('z/b')
tree_z.commit('removed b')
merge_inner(tree_z.branch, tree_a, base_tree, this_tree=tree_z)
self.assertEqual([
conflicts.MissingParent('Created directory', 'b', 'b-id'),
conflicts.UnversionedParent('Versioned directory', 'b', 'b-id')],
tree_z.conflicts())
merge_inner(tree_a.branch, tree_z.basis_tree(), base_tree,
this_tree=tree_a)
self.assertEqual([
conflicts.DeletingParent('Not deleting', 'b', 'b-id'),
conflicts.UnversionedParent('Versioned directory', 'b', 'b-id')],
tree_a.conflicts())
def test_nested_merge(self):
tree = self.make_branch_and_tree('tree',
format='dirstate-with-subtree')
sub_tree = self.make_branch_and_tree('tree/sub-tree',
format='dirstate-with-subtree')
sub_tree.set_root_id('sub-tree-root')
self.build_tree_contents([('tree/sub-tree/file', 'text1')])
sub_tree.add('file')
sub_tree.commit('foo')
tree.add_reference(sub_tree)
tree.commit('set text to 1')
tree2 = tree.bzrdir.sprout('tree2').open_workingtree()
self.build_tree_contents([('tree2/sub-tree/file', 'text2')])
tree2.lock_write()
try:
subtree2 = tree2.get_nested_tree(tree2.inventory['sub-tree-root'],
'sub-tree')
tree2.commit('changed file text')
finally:
tree2.unlock()
tree.merge_from_branch(tree2.branch)
self.assertFileEqual('text2', 'tree/sub-tree/file')
def test_merge_with_missing(self):
tree_a = self.make_branch_and_tree('tree_a')
self.build_tree_contents([('tree_a/file', 'content_1')])
tree_a.add('file')
tree_a.commit('commit base')
# basis_tree() is only guaranteed to be valid as long as it is actually
# the basis tree. This mutates the tree after grabbing basis, so go to
# the repository.
base_tree = tree_a.branch.repository.revision_tree(tree_a.last_revision())
tree_b = tree_a.bzrdir.sprout('tree_b').open_workingtree()
self.build_tree_contents([('tree_a/file', 'content_2')])
tree_a.commit('commit other')
other_tree = tree_a.basis_tree()
os.unlink('tree_b/file')
merge_inner(tree_b.branch, other_tree, base_tree, this_tree=tree_b)
def test_merge_kind_change(self):
tree_a = self.make_branch_and_tree('tree_a')
self.build_tree_contents([('tree_a/file', 'content_1')])
tree_a.add('file', 'file-id')
tree_a.commit('added file')
tree_b = tree_a.bzrdir.sprout('tree_b').open_workingtree()
os.unlink('tree_a/file')
self.build_tree(['tree_a/file/'])
tree_a.commit('changed file to directory')
tree_b.merge_from_branch(tree_a.branch)
self.assertEqual('directory', file_kind('tree_b/file'))
tree_b.revert([])
self.assertEqual('file', file_kind('tree_b/file'))
self.build_tree_contents([('tree_b/file', 'content_2')])
tree_b.commit('content change')
tree_b.merge_from_branch(tree_a.branch)
self.assertEqual(tree_b.conflicts(),
[conflicts.ContentsConflict('file',
file_id='file-id')])
def test_merge_type_registry(self):
merge_type_option = option.Option.OPTIONS['merge-type']
self.assertFalse('merge4' in [x[0] for x in
merge_type_option.iter_switches()])
registry = _mod_merge.get_merge_type_registry()
registry.register_lazy('merge4', 'bzrlib.merge', 'Merge4Merger',
'time-travelling merge')
self.assertTrue('merge4' in [x[0] for x in
merge_type_option.iter_switches()])
registry.remove('merge4')
self.assertFalse('merge4' in [x[0] for x in
merge_type_option.iter_switches()])
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