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bzrlib/tests/test_read_bundle.py
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# Copyright (C) 2006-2011 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Test read_bundle works properly across various transports."""
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import cStringIO
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import bzrlib.bundle
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from bzrlib.bundle.serializer import write_bundle
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import bzrlib.bzrdir
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import bzrlib.errors as errors
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from bzrlib import tests
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from bzrlib.tests.test_transport import TestTransportImplementation
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from bzrlib.tests.per_transport import transport_test_permutations
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import bzrlib.transport
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import bzrlib.urlutils
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from bzrlib.tests.scenarios import load_tests_apply_scenarios
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load_tests = load_tests_apply_scenarios
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def create_bundle_file(test_case):
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    test_case.build_tree(['tree/', 'tree/a', 'tree/subdir/'])
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    format = bzrlib.bzrdir.BzrDirFormat.get_default_format()
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    bzrdir = format.initialize('tree')
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    repo = bzrdir.create_repository()
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    branch = repo.bzrdir.create_branch()
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    wt = branch.bzrdir.create_workingtree()
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    wt.add(['a', 'subdir/'])
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    wt.commit('new project', rev_id='commit-1')
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    out = cStringIO.StringIO()
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    rev_ids = write_bundle(wt.branch.repository,
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                           wt.get_parent_ids()[0], 'null:', out)
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    out.seek(0)
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    return out, wt
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class TestReadMergeableBundleFromURL(TestTransportImplementation):
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    """Test that read_bundle works properly across multiple transports"""
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    scenarios = transport_test_permutations()
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    def setUp(self):
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        super(TestReadMergeableBundleFromURL, self).setUp()
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        self.bundle_name = 'test_bundle'
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        # read_mergeable_from_url will invoke get_transport which may *not*
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        # respect self._transport (i.e. returns a transport that is different
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        # from the one we want to test, so we must inject a correct transport
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        # into possible_transports first).
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        self.possible_transports = [self.get_transport(self.bundle_name)]
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        self.overrideEnv('BZR_NO_SMART_VFS', None)
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        wt = self.create_test_bundle()
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    def read_mergeable_from_url(self, url):
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        return bzrlib.bundle.read_mergeable_from_url(
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            url, possible_transports=self.possible_transports)
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    def get_url(self, relpath=''):
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        return bzrlib.urlutils.join(self._server.get_url(), relpath)
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    def create_test_bundle(self):
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        out, wt = create_bundle_file(self)
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        if self.get_transport().is_readonly():
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            self.build_tree_contents([(self.bundle_name, out.getvalue())])
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        else:
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            self.get_transport().put_file(self.bundle_name, out)
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            self.log('Put to: %s', self.get_url(self.bundle_name))
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        return wt
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    def test_read_mergeable_from_url(self):
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        info = self.read_mergeable_from_url(
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            unicode(self.get_url(self.bundle_name)))
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        revision = info.real_revisions[-1]
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        self.assertEqual('commit-1', revision.revision_id)
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    def test_read_fail(self):
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        # Trying to read from a directory, or non-bundle file
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        # should fail with NotABundle
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        self.assertRaises(errors.NotABundle,
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                          self.read_mergeable_from_url, self.get_url('tree'))
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        self.assertRaises(errors.NotABundle,
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                          self.read_mergeable_from_url, self.get_url('tree/a'))
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    def test_read_mergeable_respects_possible_transports(self):
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        if not isinstance(self.get_transport(self.bundle_name),
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                          bzrlib.transport.ConnectedTransport):
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            # There is no point testing transport reuse for not connected
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            # transports (the test will fail even).
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            raise tests.TestSkipped(
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                'Need a ConnectedTransport to test transport reuse')
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        url = unicode(self.get_url(self.bundle_name))
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        info = self.read_mergeable_from_url(url)
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        self.assertEqual(1, len(self.possible_transports))