~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.selftest.testrevision import make_branches

from bzrlib.trace import mutter

from bzrlib.branch import Branch

from bzrlib.fetch import greedy_fetch

from bzrlib.selftest import TestCaseInTempDir

def has_revision(branch, revision_id):

    try:

        branch.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)

    assert not has_revision(br_b, br_a.revision_history()[3])

    assert has_revision(br_b, br_a.revision_history()[2])

    assert len(br_b.revision_history()) == 7

    assert greedy_fetch(br_b, br_a, br_a.revision_history()[2])[0] == 0

    # greedy_fetch is not supposed to alter the revision history

    assert len(br_b.revision_history()) == 7

    assert not has_revision(br_b, br_a.revision_history()[3])

    assert len(br_b.revision_history()) == 7

    assert greedy_fetch(br_b, br_a, br_a.revision_history()[3])[0] == 1

    assert has_revision(br_b, br_a.revision_history()[3])

    assert not has_revision(br_a, br_b.revision_history()[6])

    assert has_revision(br_a, br_b.revision_history()[5])

    # When a non-branch ancestor is missing, it should be a failure, not

    # exception

    print ("CANNOT TEST MISSING NON REVISION_HISTORY ANCESTORS WITHOUT"

           " GHOSTS")

#    br_a4 = new_branch('br_a4')

#    count, failures = greedy_fetch(br_a4, br_a)

#    self.assertEqual(count, 6)

#    self.assertEqual(failures, set((br_b.revision_history()[4],

#                                    br_b.revision_history()[5]))) 

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

    assert has_revision(br_a, br_b.revision_history()[3])

    assert has_revision(br_a, br_b.revision_history()[4])

    br_b2 = new_branch('br_b2')

    assert greedy_fetch(br_b2, br_b)[0] == 7

    assert has_revision(br_b2, br_b.revision_history()[4])

    assert has_revision(br_b2, br_a.revision_history()[2])

    assert not has_revision(br_b2, br_a.revision_history()[3])

    br_a2 = new_branch('br_a2')

    assert greedy_fetch(br_a2, br_a)[0] == 9

    assert has_revision(br_a2, br_b.revision_history()[4])

    assert has_revision(br_a2, br_a.revision_history()[3])

    assert has_revision(br_a2, br_a.revision_history()[2])

    br_a3 = new_branch('br_a3')

    assert greedy_fetch(br_a3, br_a2)[0] == 0

    for revno in range(4):

        assert not 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]

    assert 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)

class TestFetch(TestCaseInTempDir):

    def test_fetch(self):

        #highest indices a: 5, b: 7

        br_a, br_b = make_branches()

        fetch_steps(self, br_a, br_b, br_a)