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# Copyright (C) 2006, 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
#
# Author: Aaron Bentley <aaron.bentley@utoronto.ca>
"""Black-box tests for bzr merge.
"""
import os
from bzrlib.branch import Branch
from bzrlib.bzrdir import BzrDir
from bzrlib.conflicts import ConflictList, ContentsConflict
from bzrlib.osutils import abspath, file_kind
from bzrlib.tests.blackbox import ExternalBase
import bzrlib.urlutils as urlutils
from bzrlib.workingtree import WorkingTree
class TestMerge(ExternalBase):
def example_branch(test):
test.runbzr('init')
file('hello', 'wt').write('foo')
test.runbzr('add hello')
test.runbzr('commit -m setup hello')
file('goodbye', 'wt').write('baz')
test.runbzr('add goodbye')
test.runbzr('commit -m setup goodbye')
def test_merge_reprocess(self):
d = BzrDir.create_standalone_workingtree('.')
d.commit('h')
self.run_bzr('merge', '.', '--reprocess', '--merge-type', 'weave')
def test_merge(self):
from bzrlib.branch import Branch
os.mkdir('a')
os.chdir('a')
self.example_branch()
ancestor = Branch.open('.').revno()
os.chdir('..')
self.runbzr('branch a b')
os.chdir('b')
file('goodbye', 'wt').write('quux')
self.runbzr(['commit', '-m', "more u's are always good"])
os.chdir('../a')
file('hello', 'wt').write('quuux')
# We can't merge when there are in-tree changes
self.runbzr('merge ../b', retcode=3)
a = WorkingTree.open('.')
a_tip = a.commit("Like an epidemic of u's")
self.runbzr('merge ../b -r last:1..last:1 --merge-type blooof',
retcode=3)
self.runbzr('merge ../b -r last:1..last:1 --merge-type merge3')
self.runbzr('revert --no-backup')
self.runbzr('merge ../b -r last:1..last:1 --merge-type weave')
self.runbzr('revert --no-backup')
self.runbzr('merge ../b -r last:1..last:1 --reprocess')
self.runbzr('revert --no-backup')
self.runbzr('merge ../b -r last:1')
self.check_file_contents('goodbye', 'quux')
# Merging a branch pulls its revision into the tree
b = Branch.open('../b')
b_tip = b.last_revision()
self.failUnless(a.branch.repository.has_revision(b_tip))
self.assertEqual([a_tip, b_tip], a.get_parent_ids())
self.runbzr('revert --no-backup')
out, err = self.runbzr('merge -r revno:1:./hello', retcode=3)
self.assertTrue("Not a branch" in err)
self.runbzr('merge -r revno:%d:./..revno:%d:../b'
%(ancestor,b.revno()))
self.assertEquals(a.get_parent_ids(),
[a.branch.last_revision(), b.last_revision()])
self.check_file_contents('goodbye', 'quux')
self.runbzr('revert --no-backup')
self.runbzr('merge -r revno:%d:../b'%b.revno())
self.assertEquals(a.get_parent_ids(),
[a.branch.last_revision(), b.last_revision()])
a_tip = a.commit('merged')
self.runbzr('merge ../b -r last:1')
self.assertEqual([a_tip], a.get_parent_ids())
def test_merge_with_missing_file(self):
"""Merge handles missing file conflicts"""
os.mkdir('a')
os.chdir('a')
os.mkdir('sub')
print >> file('sub/a.txt', 'wb'), "hello"
print >> file('b.txt', 'wb'), "hello"
print >> file('sub/c.txt', 'wb'), "hello"
self.runbzr('init')
self.runbzr('add')
self.runbzr(('commit', '-m', 'added a'))
self.runbzr('branch . ../b')
print >> file('sub/a.txt', 'ab'), "there"
print >> file('b.txt', 'ab'), "there"
print >> file('sub/c.txt', 'ab'), "there"
self.runbzr(('commit', '-m', 'Added there'))
os.unlink('sub/a.txt')
os.unlink('sub/c.txt')
os.rmdir('sub')
os.unlink('b.txt')
self.runbzr(('commit', '-m', 'Removed a.txt'))
os.chdir('../b')
print >> file('sub/a.txt', 'ab'), "something"
print >> file('b.txt', 'ab'), "something"
print >> file('sub/c.txt', 'ab'), "something"
self.runbzr(('commit', '-m', 'Modified a.txt'))
self.runbzr('merge ../a/', retcode=1)
self.assert_(os.path.exists('sub/a.txt.THIS'))
self.assert_(os.path.exists('sub/a.txt.BASE'))
os.chdir('../a')
self.runbzr('merge ../b/', retcode=1)
self.assert_(os.path.exists('sub/a.txt.OTHER'))
self.assert_(os.path.exists('sub/a.txt.BASE'))
def test_merge_remember(self):
"""Merge changes from one branch to another and test parent location."""
tree_a = self.make_branch_and_tree('branch_a')
branch_a = tree_a.branch
self.build_tree(['branch_a/a'])
tree_a.add('a')
tree_a.commit('commit a')
branch_b = branch_a.bzrdir.sprout('branch_b').open_branch()
tree_b = branch_b.bzrdir.open_workingtree()
branch_c = branch_a.bzrdir.sprout('branch_c').open_branch()
tree_c = branch_c.bzrdir.open_workingtree()
self.build_tree(['branch_a/b'])
tree_a.add('b')
tree_a.commit('commit b')
self.build_tree(['branch_c/c'])
tree_c.add('c')
tree_c.commit('commit c')
# reset parent
parent = branch_b.get_parent()
branch_b.set_parent(None)
self.assertEqual(None, branch_b.get_parent())
# test merge for failure without parent set
os.chdir('branch_b')
out = self.runbzr('merge', retcode=3)
self.assertEquals(out,
('','bzr: ERROR: No location specified or remembered\n'))
# test implicit --remember when no parent set, this merge conflicts
self.build_tree(['d'])
tree_b.add('d')
out = self.runbzr('merge ../branch_a', retcode=3)
self.assertEquals(out,
('','bzr: ERROR: Working tree has uncommitted changes.\n'))
self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
# test implicit --remember after resolving conflict
tree_b.commit('commit d')
out, err = self.runbzr('merge')
base = urlutils.local_path_from_url(branch_a.base)
self.assertEquals(out, 'Merging from remembered location %s\n' % (base,))
self.assertEquals(err, '+N b\nAll changes applied successfully.\n')
self.assertEquals(abspath(branch_b.get_parent()), abspath(parent))
# re-open tree as external runbzr modified it
tree_b = branch_b.bzrdir.open_workingtree()
tree_b.commit('merge branch_a')
# test explicit --remember
out, err = self.runbzr('merge ../branch_c --remember')
self.assertEquals(out, '')
self.assertEquals(err, '+N c\nAll changes applied successfully.\n')
self.assertEquals(abspath(branch_b.get_parent()),
abspath(branch_c.bzrdir.root_transport.base))
# re-open tree as external runbzr modified it
tree_b = branch_b.bzrdir.open_workingtree()
tree_b.commit('merge branch_c')
def test_merge_bundle(self):
from bzrlib.testament import Testament
tree_a = self.make_branch_and_tree('branch_a')
f = file('branch_a/a', 'wb')
f.write('hello')
f.close()
tree_a.add('a')
tree_a.commit('message')
tree_b = tree_a.bzrdir.sprout('branch_b').open_workingtree()
f = file('branch_a/a', 'wb')
f.write('hey there')
f.close()
tree_a.commit('message')
f = file('branch_b/a', 'wb')
f.write('goodbye')
f.close()
tree_b.commit('message')
os.chdir('branch_b')
file('../bundle', 'wb').write(self.runbzr('bundle ../branch_a')[0])
os.chdir('../branch_a')
self.runbzr('merge ../bundle', retcode=1)
testament_a = Testament.from_revision(tree_a.branch.repository,
tree_b.get_parent_ids()[0])
testament_b = Testament.from_revision(tree_b.branch.repository,
tree_b.get_parent_ids()[0])
self.assertEqualDiff(testament_a.as_text(),
testament_b.as_text())
tree_a.set_conflicts(ConflictList())
tree_a.commit('message')
# it is legal to attempt to merge an already-merged bundle
output = self.runbzr('merge ../bundle')[1]
# but it does nothing
self.assertFalse(tree_a.changes_from(tree_a.basis_tree()).has_changed())
self.assertEqual('Nothing to do.\n', output)
def test_merge_uncommitted(self):
"""Check that merge --uncommitted behaves properly"""
tree_a = self.make_branch_and_tree('a')
self.build_tree(['a/file_1', 'a/file_2'])
tree_a.add(['file_1', 'file_2'])
tree_a.commit('commit 1')
tree_b = tree_a.bzrdir.sprout('b').open_workingtree()
self.failUnlessExists('b/file_1')
tree_a.rename_one('file_1', 'file_i')
tree_a.commit('commit 2')
tree_a.rename_one('file_2', 'file_ii')
## os.chdir('b')
self.run_bzr('merge', 'a', '--uncommitted', '-d', 'b')
self.failUnlessExists('b/file_1')
self.failUnlessExists('b/file_ii')
tree_b.revert([])
self.run_bzr_error(('Cannot use --uncommitted and --revision',),
'merge', '/a', '--uncommitted', '-r1',
'-d', 'b')
def pullable_branch(self):
os.mkdir('a')
os.chdir('a')
self.example_branch()
os.chdir('..')
self.runbzr('branch a b')
os.chdir('b')
file('goodbye', 'wt').write('quux')
self.runbzr(['commit', '-m', "mode u's are always good"])
os.chdir('../a')
def pullable_branch(self):
tree_a = self.make_branch_and_tree('a')
self.build_tree(['a/file'])
tree_a.add(['file'])
self.id1 = tree_a.commit('commit 1')
tree_b = self.make_branch_and_tree('b')
tree_b.pull(tree_a.branch)
file('b/file', 'wb').write('foo')
self.id2 = tree_b.commit('commit 2')
def test_merge_pull(self):
self.pullable_branch()
os.chdir('a')
(out, err) = self.run_bzr('merge', '--pull', '../b')
self.assertContainsRe(err, 'Now on revision 2\\.')
tree_a = WorkingTree.open('.')
self.assertEqual([self.id2], tree_a.get_parent_ids())
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')
os.chdir('tree_b')
self.run_bzr('merge', '../tree_a')
self.assertEqual('directory', file_kind('file'))
tree_b.revert([])
self.assertEqual('file', file_kind('file'))
self.build_tree_contents([('file', 'content_2')])
tree_b.commit('content change')
self.run_bzr('merge', '../tree_a', retcode=1)
self.assertEqual(tree_b.conflicts(),
[ContentsConflict('file', file_id='file-id')])
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