~bzr-pqm/bzr/bzr.dev

# 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

"""Tests for branch implementations - tests a branch format."""

import os

import sys

from bzrlib import (

    branch,

    bzrdir,

    errors,

    gpg,

    urlutils,

    transactions,

    repository,

    )

from bzrlib.branch import Branch, needs_read_lock, needs_write_lock

from bzrlib.delta import TreeDelta

from bzrlib.errors import (FileExists,

                           NoSuchRevision,

                           NoSuchFile,

                           UninitializableFormat,

                           NotBranchError,

                           )

from bzrlib.osutils import getcwd

import bzrlib.revision

from bzrlib.tests import TestCase, TestCaseWithTransport, TestSkipped

from bzrlib.tests.bzrdir_implementations.test_bzrdir import TestCaseWithBzrDir

from bzrlib.trace import mutter

from bzrlib.transport import get_transport

from bzrlib.transport.http import HttpServer

from bzrlib.transport.memory import MemoryServer

from bzrlib.upgrade import upgrade

from bzrlib.workingtree import WorkingTree

# TODO: Make a branch using basis branch, and check that it 

# doesn't request any files that could have been avoided, by 

# hooking into the Transport.

class TestCaseWithBranch(TestCaseWithBzrDir):

    def setUp(self):

        super(TestCaseWithBranch, self).setUp()

        self.branch = None

    def get_branch(self):

        if self.branch is None:

            self.branch = self.make_branch('')

        return self.branch

    def make_branch(self, relpath, format=None):

        repo = self.make_repository(relpath, format=format)

        # fixme RBC 20060210 this isnt necessarily a fixable thing,

        # Skipped is the wrong exception to raise.

        try:

            return self.branch_format.initialize(repo.bzrdir)

        except errors.UninitializableFormat:

            raise TestSkipped('Uninitializable branch format')

    def make_repository(self, relpath, shared=False, format=None):

        made_control = self.make_bzrdir(relpath, format=format)

        return made_control.create_repository(shared=shared)

class TestBranch(TestCaseWithBranch):

    def test_append_revisions(self):

        """Test appending more than one revision"""

        br = self.get_branch()

        br.append_revision("rev1")

        self.assertEquals(br.revision_history(), ["rev1",])

        br.append_revision("rev2", "rev3")

        self.assertEquals(br.revision_history(), ["rev1", "rev2", "rev3"])

    def test_fetch_revisions(self):

        """Test fetch-revision operation."""

        get_transport(self.get_url()).mkdir('b1')

        get_transport(self.get_url()).mkdir('b2')

        wt = self.make_branch_and_tree('b1')

        b1 = wt.branch

        b2 = self.make_branch('b2')

        file('b1/foo', 'w').write('hello')

        wt.add(['foo'], ['foo-id'])

        wt.commit('lala!', rev_id='revision-1', allow_pointless=False)

        mutter('start fetch')

        self.assertEqual((1, []), b2.fetch(b1))

        rev = b2.repository.get_revision('revision-1')

        tree = b2.repository.revision_tree('revision-1')

        self.assertEqual(tree.get_file_text('foo-id'), 'hello')

    def test_get_revision_delta(self):

        tree_a = self.make_branch_and_tree('a')

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

        tree_a.add('foo', 'file1')

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

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

        tree_a.add('vla', 'file2')

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

        delta = tree_a.branch.get_revision_delta(1)

        self.assertIsInstance(delta, TreeDelta)

        self.assertEqual([('foo', 'file1', 'file')], delta.added)

        delta = tree_a.branch.get_revision_delta(2)

        self.assertIsInstance(delta, TreeDelta)

        self.assertEqual([('vla', 'file2', 'file')], delta.added)

    def get_unbalanced_tree_pair(self):

        """Return two branches, a and b, with one file in a."""

        get_transport(self.get_url()).mkdir('a')

        tree_a = self.make_branch_and_tree('a')

        file('a/b', 'wb').write('b')

        tree_a.add('b')

        tree_a.commit("silly commit", rev_id='A')

        get_transport(self.get_url()).mkdir('b')

        tree_b = self.make_branch_and_tree('b')

        return tree_a, tree_b

    def get_balanced_branch_pair(self):

        """Returns br_a, br_b as with one commit in a, and b has a's stores."""

        tree_a, tree_b = self.get_unbalanced_tree_pair()

        tree_b.branch.repository.fetch(tree_a.branch.repository)

        return tree_a, tree_b

    def test_clone_branch(self):

        """Copy the stores from one branch to another"""

        tree_a, tree_b = self.get_balanced_branch_pair()

        tree_b.commit("silly commit")

        os.mkdir('c')

        # this fails to test that the history from a was not used.

        dir_c = tree_a.bzrdir.clone('c', basis=tree_b.bzrdir)

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

                         dir_c.open_branch().revision_history())

    def test_clone_partial(self):

        """Copy only part of the history of a branch."""

        # TODO: RBC 20060208 test with a revision not on revision-history.

        #       what should that behaviour be ? Emailed the list.

        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')

        wt_a.bzrdir.open_repository().copy_content_into(repo_b)

        br_b = wt_a.bzrdir.open_branch().clone(repo_b.bzrdir, revision_id='1')

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

    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')

        wt_a.bzrdir.open_repository().copy_content_into(repo_b)

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

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

    def get_parented_branch(self):

        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')

        branch_b = wt_a.bzrdir.sprout('b', revision_id='1').open_branch()

        self.assertEqual(wt_a.branch.base, branch_b.get_parent())

        return branch_b

    def test_clone_branch_nickname(self):

        # test the nick name is preserved always

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

    def test_clone_branch_parent(self):

        # test the parent is preserved always

        branch_b = self.get_parented_branch()

        repo_c = self.make_repository('c')

        branch_b.repository.copy_content_into(repo_c)

        branch_c = branch_b.clone(repo_c.bzrdir)

        self.assertNotEqual(None, branch_c.get_parent())

        self.assertEqual(branch_b.get_parent(), branch_c.get_parent())

        # We can also set a specific parent, and it should be honored

        random_parent = 'http://bazaar-vcs.org/path/to/branch'

        branch_b.set_parent(random_parent)

        repo_d = self.make_repository('d')

        branch_b.repository.copy_content_into(repo_d)

        branch_d = branch_b.clone(repo_d.bzrdir)

        self.assertEqual(random_parent, branch_d.get_parent())

    def test_sprout_branch_nickname(self):

        # test the nick name is reset always

        raise 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_submit_branch(self):

        """Submit location can be queried and set"""

        branch = self.make_branch('branch')

        self.assertEqual(branch.get_submit_branch(), None)

        branch.set_submit_branch('sftp://example.com')

        self.assertEqual(branch.get_submit_branch(), 'sftp://example.com')

        branch.set_submit_branch('sftp://example.net')

        self.assertEqual(branch.get_submit_branch(), 'sftp://example.net')

    def test_record_initial_ghost(self):

        """Branches should support having ghosts."""

        wt = self.make_branch_and_tree('.')

        wt.set_parent_ids(['non:existent@rev--ision--0--2'],

            allow_leftmost_as_ghost=True)

        rev_id = wt.commit('commit against a ghost first parent.')

        rev = wt.branch.repository.get_revision(rev_id)

        self.assertEqual(rev.parent_ids, ['non:existent@rev--ision--0--2'])

        # parent_sha1s is not populated now, WTF. rbc 20051003

        self.assertEqual(len(rev.parent_sha1s), 0)

    def test_record_two_ghosts(self):

        """Recording with all ghosts works."""

        wt = self.make_branch_and_tree('.')

        wt.set_parent_ids([

                'foo@azkhazan-123123-abcabc',

                'wibble@fofof--20050401--1928390812',

            ],

            allow_leftmost_as_ghost=True)

        rev_id = wt.commit("commit from ghost base with one merge")

        # the revision should have been committed with two parents

        rev = wt.branch.repository.get_revision(rev_id)

        self.assertEqual(['foo@azkhazan-123123-abcabc',

            'wibble@fofof--20050401--1928390812'],

            rev.parent_ids)

    def test_bad_revision(self):

        self.assertRaises(errors.InvalidRevisionId,

                          self.get_branch().repository.get_revision,

                          None)

# TODO 20051003 RBC:

# compare the gpg-to-sign info for a commit with a ghost and 

#     an identical tree without a ghost

# fetch missing should rewrite the TOC of weaves to list newly available parents.

    def test_sign_existing_revision(self):

        wt = self.make_branch_and_tree('.')

        branch = wt.branch

        wt.commit("base", allow_pointless=True, rev_id='A')

        from bzrlib.testament import Testament

        strategy = gpg.LoopbackGPGStrategy(None)

        branch.repository.sign_revision('A', strategy)

        self.assertEqual(Testament.from_revision(branch.repository, 

                         'A').as_short_text(),

                         branch.repository.get_signature_text('A'))

    def test_store_signature(self):

        wt = self.make_branch_and_tree('.')

        branch = wt.branch

        branch.repository.store_revision_signature(

            gpg.LoopbackGPGStrategy(None), 'FOO', 'A')

        self.assertRaises(errors.NoSuchRevision,

                          branch.repository.has_signature_for_revision_id,

                          'A')

        wt.commit("base", allow_pointless=True, rev_id='A')

        self.assertEqual('FOO', 

                         branch.repository.get_signature_text('A'))

    def test_branch_keeps_signatures(self):

        wt = self.make_branch_and_tree('source')

        wt.commit('A', allow_pointless=True, rev_id='A')

        wt.branch.repository.sign_revision('A',

            gpg.LoopbackGPGStrategy(None))

        #FIXME: clone should work to urls,

        # wt.clone should work to disks.

        self.build_tree(['target/'])

        d2 = wt.bzrdir.clone('target')

        self.assertEqual(wt.branch.repository.get_signature_text('A'),

                         d2.open_repository().get_signature_text('A'))

    def test_nicks(self):

        """Branch nicknames"""

        t = get_transport(self.get_url())

        t.mkdir('bzr.dev')

        branch = self.make_branch('bzr.dev')

        self.assertEqual(branch.nick, 'bzr.dev')

        t.move('bzr.dev', 'bzr.ab')

        branch = Branch.open(self.get_url('bzr.ab'))

        self.assertEqual(branch.nick, 'bzr.ab')

        branch.nick = "Aaron's branch"

        branch.nick = "Aaron's branch"

        self.failUnless(

            t.has(

                t.relpath(

                    branch.control_files.controlfilename("branch.conf")

                    )

                )

            )

        self.assertEqual(branch.nick, "Aaron's branch")

        t.move('bzr.ab', 'integration')

        branch = Branch.open(self.get_url('integration'))

        self.assertEqual(branch.nick, "Aaron's branch")

        branch.nick = u"\u1234"

        self.assertEqual(branch.nick, u"\u1234")

    def test_commit_nicks(self):

        """Nicknames are committed to the revision"""

        get_transport(self.get_url()).mkdir('bzr.dev')

        wt = self.make_branch_and_tree('bzr.dev')

        branch = wt.branch

        branch.nick = "My happy branch"

        wt.commit('My commit respect da nick.')

        committed = branch.repository.get_revision(branch.last_revision())

        self.assertEqual(committed.properties["branch-nick"], 

                         "My happy branch")

    def test_create_open_branch_uses_repository(self):

        try:

            repo = self.make_repository('.', shared=True)

        except errors.IncompatibleFormat:

            return

        repo.bzrdir.root_transport.mkdir('child')

        child_dir = self.bzrdir_format.initialize('child')

        try:

            child_branch = self.branch_format.initialize(child_dir)

        except errors.UninitializableFormat:

            # branch references are not default init'able.

            return

        self.assertEqual(repo.bzrdir.root_transport.base,

                         child_branch.repository.bzrdir.root_transport.base)

        child_branch = branch.Branch.open(self.get_url('child'))

        self.assertEqual(repo.bzrdir.root_transport.base,

                         child_branch.repository.bzrdir.root_transport.base)

    def test_format_description(self):

        tree = self.make_branch_and_tree('tree')

        text = tree.branch._format.get_format_description()

        self.failUnless(len(text))

    def test_check_branch_report_results(self):

        """Checking a branch produces results which can be printed"""

        branch = self.make_branch('.')

        result = branch.check()

        # reports results through logging

        result.report_results(verbose=True)

        result.report_results(verbose=False)

    def test_get_commit_builder(self):

        self.assertIsInstance(self.make_branch(".").get_commit_builder([]), 

            repository.CommitBuilder)

    def test_generate_revision_history(self):

        """Create a fake revision history easily."""

        tree = self.make_branch_and_tree('.')

        rev1 = tree.commit('foo')

        orig_history = tree.branch.revision_history()

        rev2 = tree.commit('bar', allow_pointless=True)

        tree.branch.generate_revision_history(rev1)

        self.assertEqual(orig_history, tree.branch.revision_history())

    def test_generate_revision_history_NULL_REVISION(self):

        tree = self.make_branch_and_tree('.')

        rev1 = tree.commit('foo')

        tree.branch.generate_revision_history(bzrlib.revision.NULL_REVISION)

        self.assertEqual([], tree.branch.revision_history())

    def test_create_checkout(self):

        tree_a = self.make_branch_and_tree('a')

        branch_a = tree_a.branch

        checkout_b = branch_a.create_checkout('b')

        self.assertEqual(None, checkout_b.last_revision())

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

        self.assertEqual('rev1', branch_a.last_revision())

        self.assertNotEqual(checkout_b.branch.base, branch_a.base)

        checkout_c = branch_a.create_checkout('c', lightweight=True)

        self.assertEqual('rev1', checkout_c.last_revision())

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

        self.assertEqual('rev2', branch_a.last_revision())

        self.assertEqual(checkout_c.branch.base, branch_a.base)

        os.mkdir('d')

        checkout_d = branch_a.create_checkout('d', lightweight=True)

        self.assertEqual('rev2', checkout_d.last_revision())

        os.mkdir('e')

        checkout_e = branch_a.create_checkout('e')

        self.assertEqual('rev2', checkout_e.last_revision())

    def test_create_anonymous_lightweight_checkout(self):

        """A lightweight checkout from a readonly branch should succeed."""

        tree_a = self.make_branch_and_tree('a')

        rev_id = tree_a.commit('put some content in the branch')

        source_branch = bzrlib.branch.Branch.open(

            'readonly+' + tree_a.bzrdir.root_transport.base)

        # sanity check that the test will be valid

        self.assertRaises((errors.LockError, errors.TransportNotPossible),

            source_branch.lock_write)

        checkout = source_branch.create_checkout('c', lightweight=True)

        self.assertEqual(rev_id, checkout.last_revision())

    def test_create_anonymous_heavyweight_checkout(self):

        """A regular checkout from a readonly branch should succeed."""

        tree_a = self.make_branch_and_tree('a')

        rev_id = tree_a.commit('put some content in the branch')

        source_branch = bzrlib.branch.Branch.open(

            'readonly+' + tree_a.bzrdir.root_transport.base)

        # sanity check that the test will be valid

        self.assertRaises((errors.LockError, errors.TransportNotPossible),

            source_branch.lock_write)

        checkout = source_branch.create_checkout('c')

        self.assertEqual(rev_id, checkout.last_revision())

class ChrootedTests(TestCaseWithBranch):

    """A support class that provides readonly urls outside the local namespace.

    This is done by checking if self.transport_server is a MemoryServer. if it

    is then we are chrooted already, if it is not then an HttpServer is used

    for readonly urls.

    """

    def setUp(self):

        super(ChrootedTests, self).setUp()

        if not self.transport_server == MemoryServer:

            self.transport_readonly_server = HttpServer

    def test_open_containing(self):

        self.assertRaises(NotBranchError, Branch.open_containing,

                          self.get_readonly_url(''))

        self.assertRaises(NotBranchError, Branch.open_containing,

                          self.get_readonly_url('g/p/q'))

        branch = self.make_branch('.')

        branch, relpath = Branch.open_containing(self.get_readonly_url(''))

        self.assertEqual('', relpath)

        branch, relpath = Branch.open_containing(self.get_readonly_url('g/p/q'))

        self.assertEqual('g/p/q', relpath)

class InstrumentedTransaction(object):

    def finish(self):

        self.calls.append('finish')

    def __init__(self):

        self.calls = []

class TestDecorator(object):

    def __init__(self):

        self._calls = []

    def lock_read(self):

        self._calls.append('lr')

    def lock_write(self):

        self._calls.append('lw')

    def unlock(self):

        self._calls.append('ul')

    @needs_read_lock

    def do_with_read(self):

        return 1

    @needs_read_lock

    def except_with_read(self):

        raise RuntimeError

    @needs_write_lock

    def do_with_write(self):

        return 2

    @needs_write_lock

    def except_with_write(self):

        raise RuntimeError

class TestDecorators(TestCase):

    def test_needs_read_lock(self):

        branch = TestDecorator()

        self.assertEqual(1, branch.do_with_read())

        self.assertEqual(['lr', 'ul'], branch._calls)

    def test_excepts_in_read_lock(self):

        branch = TestDecorator()

        self.assertRaises(RuntimeError, branch.except_with_read)

        self.assertEqual(['lr', 'ul'], branch._calls)

    def test_needs_write_lock(self):

        branch = TestDecorator()

        self.assertEqual(2, branch.do_with_write())

        self.assertEqual(['lw', 'ul'], branch._calls)

    def test_excepts_in_write_lock(self):

        branch = TestDecorator()

        self.assertRaises(RuntimeError, branch.except_with_write)

        self.assertEqual(['lw', 'ul'], branch._calls)

class TestBranchTransaction(TestCaseWithBranch):

    def setUp(self):

        super(TestBranchTransaction, self).setUp()

        self.branch = None

    def test_default_get_transaction(self):

        """branch.get_transaction on a new branch should give a PassThrough."""

        self.failUnless(isinstance(self.get_branch().get_transaction(),

                                   transactions.PassThroughTransaction))

    def test__set_new_transaction(self):

        self.get_branch()._set_transaction(transactions.ReadOnlyTransaction())

    def test__set_over_existing_transaction_raises(self):

        self.get_branch()._set_transaction(transactions.ReadOnlyTransaction())

        self.assertRaises(errors.LockError,

                          self.get_branch()._set_transaction,

                          transactions.ReadOnlyTransaction())

    def test_finish_no_transaction_raises(self):

        self.assertRaises(errors.LockError, self.get_branch()._finish_transaction)

    def test_finish_readonly_transaction_works(self):

        self.get_branch()._set_transaction(transactions.ReadOnlyTransaction())

        self.get_branch()._finish_transaction()

        self.assertEqual(None, self.get_branch().control_files._transaction)

    def test_unlock_calls_finish(self):

        self.get_branch().lock_read()

        transaction = InstrumentedTransaction()

        self.get_branch().control_files._transaction = transaction

        self.get_branch().unlock()

        self.assertEqual(['finish'], transaction.calls)

    def test_lock_read_acquires_ro_transaction(self):

        self.get_branch().lock_read()

        self.failUnless(isinstance(self.get_branch().get_transaction(),

                                   transactions.ReadOnlyTransaction))

        self.get_branch().unlock()

    def test_lock_write_acquires_write_transaction(self):

        self.get_branch().lock_write()

        # cannot use get_transaction as its magic

        self.failUnless(isinstance(self.get_branch().control_files._transaction,

                                   transactions.WriteTransaction))

        self.get_branch().unlock()

class TestBranchPushLocations(TestCaseWithBranch):

    def test_get_push_location_unset(self):

        self.assertEqual(None, self.get_branch().get_push_location())

    def test_get_push_location_exact(self):

        from bzrlib.config import (locations_config_filename,

                                   ensure_config_dir_exists)

        ensure_config_dir_exists()

        fn = locations_config_filename()

        print >> open(fn, 'wt'), ("[%s]\n"

                                  "push_location=foo" %

                                  self.get_branch().base[:-1])

        self.assertEqual("foo", self.get_branch().get_push_location())

    def test_set_push_location(self):