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bzrlib/tests/test_fetch.py

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from bzrlib import (

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    bzrdir,

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    errors,

 

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    osutils,

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    merge,

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    repository,

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    versionedfile,

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        self.assertEqual(('get_record_stream', [('rev-one',)],

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                          target._fetch_order, False),

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                         self.find_get_record_stream(source.inventories.calls))

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        # Because of bugs in the old fetch code, revisions could accidentally

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        # have deltas present in knits. However, it was never intended, so we

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        # always for include_delta_closure=True, to make sure we get fulltexts.

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        # bug #261339

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        self.assertEqual(('get_record_stream', [('rev-one',)],

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                          target._fetch_order, True),

 

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                          target._fetch_order, False),

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                         self.find_get_record_stream(source.revisions.calls))

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        # XXX: Signatures is special, and slightly broken. The

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        # standard item_keys_introduced_by actually does a lookup for every

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        # we care about.

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        signature_calls = source.signatures.calls[-1:]

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        self.assertEqual(('get_record_stream', [('rev-one',)],

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                          target._fetch_order, True),

 

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                          target._fetch_order, False),

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                         self.find_get_record_stream(signature_calls))

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    def test_fetch_no_deltas_with_delta_closure(self):

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                          target._fetch_order, True),

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                         self.find_get_record_stream(signature_calls))

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    def test_fetch_revisions_with_deltas_into_pack(self):

 

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        # See BUG #261339, dev versions of bzr could accidentally create deltas

 

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        # in revision texts in knit branches (when fetching from packs). So we

 

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        # ensure that *if* a knit repository has a delta in revisions, that it

 

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        # gets properly expanded back into a fulltext when stored in the pack

 

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        # file.

 

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        tree = self.make_branch_and_tree('source', format='dirstate')

 

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        target = self.make_repository('target', format='pack-0.92')

 

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        self.build_tree(['source/file'])

 

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        tree.set_root_id('root-id')

 

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        tree.add('file', 'file-id')

 

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        tree.commit('one', rev_id='rev-one')

 

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        # Hack the KVF for revisions so that it "accidentally" allows a delta

 

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        tree.branch.repository.revisions._max_delta_chain = 200

 

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        tree.commit('two', rev_id='rev-two')

 

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        source = tree.branch.repository

 

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        # Ensure that we stored a delta

 

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        source.lock_read()

 

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        self.addCleanup(source.unlock)

 

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        record = source.revisions.get_record_stream([('rev-two',)],

 

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            'unordered', False).next()

 

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        self.assertEqual('knit-delta-gz', record.storage_kind)

 

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        target.fetch(tree.branch.repository, revision_id='rev-two')

 

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        # The record should get expanded back to a fulltext

 

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        target.lock_read()

 

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        self.addCleanup(target.unlock)

 

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        record = target.revisions.get_record_stream([('rev-two',)],

 

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            'unordered', False).next()

 

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        self.assertEqual('knit-ft-gz', record.storage_kind)

 

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    def test_fetch_with_fallback_and_merge(self):

 

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        builder = self.make_branch_builder('source', format='pack-0.92')

 

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        builder.start_series()

 

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        # graph

 

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        #   A

 

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        #   |\

 

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        #   B C

 

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        #   | |

 

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        #   | D

 

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        #   | |

 

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        #   | E

 

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        #    \|

 

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        #     F

 

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        # A & B are present in the base (stacked-on) repository, A-E are

 

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        # present in the source.

 

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        # This reproduces bug #304841

 

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        # We need a large enough inventory that total size of compressed deltas

 

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        # is shorter than the size of a compressed fulltext. We have to use

 

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        # random ids because otherwise the inventory fulltext compresses too

 

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        # well and the deltas get bigger.

 

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        to_add = [

 

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            ('add', ('', 'TREE_ROOT', 'directory', None))]

 

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        for i in xrange(10):

 

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            fname = 'file%03d' % (i,)

 

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            fileid = '%s-%s' % (fname, osutils.rand_chars(64))

 

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            to_add.append(('add', (fname, fileid, 'file', 'content\n')))

 

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        builder.build_snapshot('A', None, to_add)

 

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        builder.build_snapshot('B', ['A'], [])

 

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        builder.build_snapshot('C', ['A'], [])

 

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        builder.build_snapshot('D', ['C'], [])

 

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        builder.build_snapshot('E', ['D'], [])

 

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        builder.build_snapshot('F', ['E', 'B'], [])

 

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        builder.finish_series()

 

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        source_branch = builder.get_branch()

 

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        source_branch.bzrdir.sprout('base', revision_id='B')

 

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        target_branch = self.make_branch('target', format='1.6')

 

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        target_branch.set_stacked_on_url('../base')

 

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        source = source_branch.repository

 

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        source.lock_read()

 

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        self.addCleanup(source.unlock)

 

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        source.inventories = versionedfile.OrderingVersionedFilesDecorator(

 

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                        source.inventories,

 

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                        key_priority={('E',): 1, ('D',): 2, ('C',): 4,

 

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                                      ('F',): 3})

 

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        # Ensure that the content is yielded in the proper order, and given as

 

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        # the expected kinds

 

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        records = [(record.key, record.storage_kind)

 

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                   for record in source.inventories.get_record_stream(

 

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                        [('D',), ('C',), ('E',), ('F',)], 'unordered', False)]

 

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        self.assertEqual([(('E',), 'knit-delta-gz'), (('D',), 'knit-delta-gz'),

 

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                          (('F',), 'knit-delta-gz'), (('C',), 'knit-delta-gz')],

 

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                          records)

 

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        target_branch.lock_write()

 

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        self.addCleanup(target_branch.unlock)

 

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        target = target_branch.repository

 

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        target.fetch(source, revision_id='F')

 

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        # 'C' should be expanded to a fulltext, but D and E should still be

 

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        # deltas

 

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        stream = target.inventories.get_record_stream(

 

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            [('C',), ('D',), ('E',), ('F',)],

 

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            'unordered', False)

 

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        kinds = dict((record.key, record.storage_kind) for record in stream)

 

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        self.assertEqual({('C',): 'knit-ft-gz', ('D',): 'knit-delta-gz',

 

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                          ('E',): 'knit-delta-gz', ('F',): 'knit-delta-gz'},

 

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                         kinds)

 

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class Test1To2Fetch(TestCaseWithTransport):

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    """Tests for Model1To2 failure modes"""

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