~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005 by 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

import sys

import bzrlib.errors

from bzrlib.tests.test_revision import make_branches

from bzrlib.trace import mutter

from bzrlib.branch import Branch

from bzrlib.fetch import greedy_fetch

from bzrlib.merge import merge

from bzrlib.tests import TestCaseInTempDir

from bzrlib.tests.HTTPTestUtil import TestCaseWithWebserver

def has_revision(branch, revision_id):

    try:

        branch.repository.get_revision_xml_file(revision_id)

        return True

    except bzrlib.errors.NoSuchRevision:

        return False

def fetch_steps(self, br_a, br_b, writable_a):

    """A foreign test method for testing fetch locally and remotely."""

    def new_branch(name):

        os.mkdir(name)

        return Branch.initialize(name)

    self.assertFalse(has_revision(br_b, br_a.revision_history()[3]))

    self.assert_(has_revision(br_b, br_a.revision_history()[2]))

    self.assertEquals(len(br_b.revision_history()), 7)

    self.assertEquals(greedy_fetch(br_b, br_a, br_a.revision_history()[2])[0], 0)

    # greedy_fetch is not supposed to alter the revision history

    self.assertEquals(len(br_b.revision_history()), 7)

    self.assertFalse(has_revision(br_b, br_a.revision_history()[3]))

    self.assertEquals(len(br_b.revision_history()), 7)

    self.assertEquals(greedy_fetch(br_b, br_a, br_a.revision_history()[3])[0], 1)

    self.assert_(has_revision(br_b, br_a.revision_history()[3]))

    self.assertFalse(has_revision(br_a, br_b.revision_history()[6]))

    self.assert_(has_revision(br_a, br_b.revision_history()[5]))

    # When a non-branch ancestor is missing, it should be unlisted...

    # as its not reference from the inventory weave.

    br_b4 = new_branch('br_4')

    count, failures = greedy_fetch(br_b4, br_b)

    self.assertEqual(count, 7)

    self.assertEqual(failures, [])

    self.assertEqual(greedy_fetch(writable_a, br_b)[0], 1)

    self.assert_(has_revision(br_a, br_b.revision_history()[3]))

    self.assert_(has_revision(br_a, br_b.revision_history()[4]))

    br_b2 = new_branch('br_b2')

    self.assertEquals(greedy_fetch(br_b2, br_b)[0], 7)

    self.assert_(has_revision(br_b2, br_b.revision_history()[4]))

    self.assert_(has_revision(br_b2, br_a.revision_history()[2]))

    self.assertFalse(has_revision(br_b2, br_a.revision_history()[3]))

    br_a2 = new_branch('br_a2')

    self.assertEquals(greedy_fetch(br_a2, br_a)[0], 9)

    self.assert_(has_revision(br_a2, br_b.revision_history()[4]))

    self.assert_(has_revision(br_a2, br_a.revision_history()[3]))

    self.assert_(has_revision(br_a2, br_a.revision_history()[2]))

    br_a3 = new_branch('br_a3')

    self.assertEquals(greedy_fetch(br_a3, br_a2)[0], 0)

    for revno in range(4):

        self.assertFalse(has_revision(br_a3, br_a.revision_history()[revno]))

    self.assertEqual(greedy_fetch(br_a3, br_a2, br_a.revision_history()[2])[0], 3)

    fetched = greedy_fetch(br_a3, br_a2, br_a.revision_history()[3])[0]

    self.assertEquals(fetched, 3, "fetched %d instead of 3" % fetched)

    # InstallFailed should be raised if the branch is missing the revision

    # that was requested.

    self.assertRaises(bzrlib.errors.InstallFailed, greedy_fetch, br_a3,

                      br_a2, 'pizza')

    # InstallFailed should be raised if the branch is missing a revision

    # from its own revision history

    br_a2.append_revision('a-b-c')

    self.assertRaises(bzrlib.errors.InstallFailed, greedy_fetch, br_a3,

                      br_a2)

    #TODO: test that fetch correctly does reweaving when needed. RBC 20051008

class TestFetch(TestCaseInTempDir):

    def test_fetch(self):

        #highest indices a: 5, b: 7

        br_a, br_b = make_branches(self)

        fetch_steps(self, br_a, br_b, br_a)

class TestMergeFetch(TestCaseInTempDir):

    def test_merge_fetches_unrelated(self):

        """Merge brings across history from unrelated source"""

        os.mkdir('br1')

        br1 = Branch.initialize('br1')

        br1.working_tree().commit(message='rev 1-1', rev_id='1-1')

        br1.working_tree().commit(message='rev 1-2', rev_id='1-2')

        os.mkdir('br2')

        br2 = Branch.initialize('br2')

        br2.working_tree().commit(message='rev 2-1', rev_id='2-1')

        merge(other_revision=['br1', -1], base_revision=['br1', 0],

              this_dir='br2')

        self._check_revs_present(br2)

    def test_merge_fetches(self):

        """Merge brings across history from source"""

        os.mkdir('br1')

        br1 = Branch.initialize('br1')

        br1.working_tree().commit(message='rev 1-1', rev_id='1-1')

        br1.clone('br2')

        br2 = Branch.open('br2')

        br1.working_tree().commit(message='rev 1-2', rev_id='1-2')

        br2.working_tree().commit(message='rev 2-1', rev_id='2-1')

        merge(other_revision=['br1', -1], base_revision=[None, None], 

              this_dir='br2')

        self._check_revs_present(br2)

    def _check_revs_present(self, br2):

        for rev_id in '1-1', '1-2', '2-1':

            self.assertTrue(br2.repository.has_revision(rev_id))

            rev = br2.repository.get_revision(rev_id)

            self.assertEqual(rev.revision_id, rev_id)

            self.assertTrue(br2.repository.get_inventory(rev_id))

class TestMergeFileHistory(TestCaseInTempDir):

    def setUp(self):

        TestCaseInTempDir.setUp(self)

        os.mkdir('br1')

        br1 = Branch.initialize('br1')

        self.build_tree_contents([('br1/file', 'original contents\n')])

        br1.working_tree().add(['file'], ['this-file-id'])

        br1.working_tree().commit(message='rev 1-1', rev_id='1-1')

        br1.clone('br2')

        br2 = Branch.open('br2')

        self.build_tree_contents([('br1/file', 'original from 1\n')])

        br1.working_tree().commit(message='rev 1-2', rev_id='1-2')

        self.build_tree_contents([('br1/file', 'agreement\n')])

        br1.working_tree().commit(message='rev 1-3', rev_id='1-3')

        self.build_tree_contents([('br2/file', 'contents in 2\n')])

        br2.working_tree().commit(message='rev 2-1', rev_id='2-1')

        self.build_tree_contents([('br2/file', 'agreement\n')])

        br2.working_tree().commit(message='rev 2-2', rev_id='2-2')

    def test_merge_fetches_file_history(self):

        """Merge brings across file histories"""

        br2 = Branch.open('br2')

        merge(other_revision=['br1', -1], base_revision=[None, None], 

              this_dir='br2')

        for rev_id, text in [('1-2', 'original from 1\n'),

                             ('1-3', 'agreement\n'),

                             ('2-1', 'contents in 2\n'),

                             ('2-2', 'agreement\n')]:

            self.assertEqualDiff(

                br2.repository.revision_tree(

                    rev_id).get_file_text('this-file-id'), text)

class TestHttpFetch(TestCaseWithWebserver):

    def setUp(self):

        super(TestHttpFetch, self).setUp()

        self.weblogs = []

    def test_fetch(self):

        #highest indices a: 5, b: 7

        br_a, br_b = make_branches(self)

        br_rem_a = Branch.open(self.get_remote_url(br_a.base))

        fetch_steps(self, br_rem_a, br_b, br_a)

    def log(self, *args):

        """Capture web server log messages for introspection."""

        super(TestHttpFetch, self).log(*args)

        # if this call indicates a url being fetched, save it specially

        if args[0].startswith("webserver"):

            self.weblogs.append(args[3])

    def test_weaves_are_retrieved_once(self):

        self.build_tree(("source/", "source/file", "target/"))

        branch = Branch.initialize("source")

        branch.working_tree().add(["file"], ["id"])

        branch.working_tree().commit("added file")

        print >>open("source/file", 'w'), "blah"

        branch.working_tree().commit("changed file")

        target = Branch.initialize("target/")

        source = Branch.open(self.get_remote_url("source/"))

        self.assertEqual(greedy_fetch(target, source), (2, []))

        # this is the path to the literal file. As format changes 

        # occur it needs to be updated. FIXME: ask the store for the

        # path.

        weave_suffix = 'weaves/ce/id.weave HTTP/1.1" 200 -'

        self.assertEqual(1,

            len([log for log in self.weblogs if log.endswith(weave_suffix)]))

        inventory_weave_suffix = 'inventory.weave HTTP/1.1" 200 -'

        self.assertEqual(1,

            len([log for log in self.weblogs if log.endswith(

                inventory_weave_suffix)]))

        # this r-h check test will prevent regressions, but it currently already 

        # passes, before the patch to cache-rh is applied :[

        revision_history_suffix = 'revision-history HTTP/1.1" 200 -'

        self.assertEqual(1,

            len([log for log in self.weblogs if log.endswith(

                revision_history_suffix)]))

        self.weblogs = []

        # check there is nothing more to fetch

        source = Branch.open(self.get_remote_url("source/"))

        self.assertEqual(greedy_fetch(target, source), (0, []))

        self.failUnless(self.weblogs[0].endswith('branch-format HTTP/1.1" 200 -'))

        self.failUnless(self.weblogs[1].endswith('revision-history HTTP/1.1" 200 -'))

        self.assertEqual(2, len(self.weblogs))