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https://launchpad.net/bugs/524184
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bzrlib/tests/test_fetch.py
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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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import os
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import re
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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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    )
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from bzrlib.branch import Branch
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from bzrlib.bzrdir import BzrDir
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from bzrlib.repofmt import knitrepo
31
 
from bzrlib.symbol_versioning import (
32
 
    zero_ninetyone,
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    )
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from bzrlib.tests import TestCaseWithTransport
35
 
from bzrlib.tests.HTTPTestUtil import TestCaseWithWebserver
 
34
from bzrlib.tests.http_utils import TestCaseWithWebserver
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from bzrlib.tests.test_revision import make_branches
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from bzrlib.trace import mutter
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from bzrlib.upgrade import Convert
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from bzrlib.workingtree import WorkingTree
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41
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# These tests are a bit old; please instead add new tests into
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# interrepository_implementations/ so they'll run on all relevant
 
41
# per_interrepository/ so they'll run on all relevant
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# combinations.
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45
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48
47
 
49
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def fetch_steps(self, br_a, br_b, writable_a):
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    """A foreign test method for testing fetch locally and remotely."""
51
 
     
 
50
 
52
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    # TODO RBC 20060201 make this a repository test.
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    repo_b = br_b.repository
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    self.assertFalse(repo_b.has_revision(br_a.revision_history()[3]))
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    self.assertTrue(repo_b.has_revision(br_a.revision_history()[2]))
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    self.assertEquals(len(br_b.revision_history()), 7)
57
 
    self.assertEquals(br_b.fetch(br_a, br_a.revision_history()[2])[0], 0)
 
56
    br_b.fetch(br_a, br_a.revision_history()[2])
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    # branch.fetch is not supposed to alter the revision history
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    self.assertEquals(len(br_b.revision_history()), 7)
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    self.assertFalse(repo_b.has_revision(br_a.revision_history()[3]))
61
60
 
62
61
    # fetching the next revision up in sample data copies one revision
63
 
    self.assertEquals(br_b.fetch(br_a, br_a.revision_history()[3])[0], 1)
 
62
    br_b.fetch(br_a, br_a.revision_history()[3])
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    self.assertTrue(repo_b.has_revision(br_a.revision_history()[3]))
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    self.assertFalse(has_revision(br_a, br_b.revision_history()[6]))
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    self.assertTrue(br_a.repository.has_revision(br_b.revision_history()[5]))
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    # When a non-branch ancestor is missing, it should be unlisted...
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    # as its not reference from the inventory weave.
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    br_b4 = self.make_branch('br_4')
71
 
    count, failures = br_b4.fetch(br_b)
72
 
    self.assertEqual(count, 7)
73
 
    self.assertEqual(failures, [])
 
70
    br_b4.fetch(br_b)
74
71
 
75
 
    self.assertEqual(writable_a.fetch(br_b)[0], 1)
 
72
    writable_a.fetch(br_b)
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    self.assertTrue(has_revision(br_a, br_b.revision_history()[3]))
77
74
    self.assertTrue(has_revision(br_a, br_b.revision_history()[4]))
78
 
        
 
75
 
79
76
    br_b2 = self.make_branch('br_b2')
80
 
    self.assertEquals(br_b2.fetch(br_b)[0], 7)
 
77
    br_b2.fetch(br_b)
81
78
    self.assertTrue(has_revision(br_b2, br_b.revision_history()[4]))
82
79
    self.assertTrue(has_revision(br_b2, br_a.revision_history()[2]))
83
80
    self.assertFalse(has_revision(br_b2, br_a.revision_history()[3]))
84
81
 
85
82
    br_a2 = self.make_branch('br_a2')
86
 
    self.assertEquals(br_a2.fetch(br_a)[0], 9)
 
83
    br_a2.fetch(br_a)
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    self.assertTrue(has_revision(br_a2, br_b.revision_history()[4]))
88
85
    self.assertTrue(has_revision(br_a2, br_a.revision_history()[3]))
89
86
    self.assertTrue(has_revision(br_a2, br_a.revision_history()[2]))
90
87
 
91
88
    br_a3 = self.make_branch('br_a3')
92
 
    # pulling a branch with no revisions grabs nothing, regardless of 
 
89
    # pulling a branch with no revisions grabs nothing, regardless of
93
90
    # whats in the inventory.
94
 
    self.assertEquals(br_a3.fetch(br_a2)[0], 0)
 
91
    br_a3.fetch(br_a2)
95
92
    for revno in range(4):
96
93
        self.assertFalse(
97
94
            br_a3.repository.has_revision(br_a.revision_history()[revno]))
98
 
    self.assertEqual(br_a3.fetch(br_a2, br_a.revision_history()[2])[0], 3)
 
95
    br_a3.fetch(br_a2, br_a.revision_history()[2])
99
96
    # pull the 3 revisions introduced by a@u-0-3
100
 
    fetched = br_a3.fetch(br_a2, br_a.revision_history()[3])[0]
101
 
    self.assertEquals(fetched, 3, "fetched %d instead of 3" % fetched)
102
 
    # InstallFailed should be raised if the branch is missing the revision
 
97
    br_a3.fetch(br_a2, br_a.revision_history()[3])
 
98
    # NoSuchRevision should be raised if the branch is missing the revision
103
99
    # that was requested.
104
 
    self.assertRaises(errors.InstallFailed, br_a3.fetch, br_a2, 'pizza')
 
100
    self.assertRaises(errors.NoSuchRevision, br_a3.fetch, br_a2, 'pizza')
105
101
 
106
102
    # TODO: Test trying to fetch from a branch that points to a revision not
107
103
    # actually present in its repository.  Not every branch format allows you
110
106
    # every branch supports that.  -- mbp 20070814
111
107
 
112
108
    #TODO: test that fetch correctly does reweaving when needed. RBC 20051008
113
 
    # Note that this means - updating the weave when ghosts are filled in to 
 
109
    # Note that this means - updating the weave when ghosts are filled in to
114
110
    # add the right parents.
115
111
 
116
112
 
123
119
 
124
120
    def test_fetch_self(self):
125
121
        wt = self.make_branch_and_tree('br')
126
 
        self.assertEqual(wt.branch.fetch(wt.branch), (0, []))
 
122
        wt.branch.fetch(wt.branch)
127
123
 
128
124
    def test_fetch_root_knit(self):
129
125
        """Ensure that knit2.fetch() updates the root knit
130
 
        
 
126
 
131
127
        This tests the case where the root has a new revision, but there are no
132
128
        corresponding filename, parent, contents or other changes.
133
129
        """
149
145
        branch = self.make_branch('branch', format=knit2_format)
150
146
        branch.pull(tree.branch, stop_revision='rev1')
151
147
        repo = branch.repository
152
 
        root_knit = repo.weave_store.get_weave('tree-root',
153
 
                                                repo.get_transaction())
154
 
        # Make sure fetch retrieved only what we requested
155
 
        self.assertTrue('rev1' in root_knit)
156
 
        self.assertTrue('rev2' not in root_knit)
 
148
        repo.lock_read()
 
149
        try:
 
150
            # Make sure fetch retrieved only what we requested
 
151
            self.assertEqual({('tree-root', 'rev1'):()},
 
152
                repo.texts.get_parent_map(
 
153
                    [('tree-root', 'rev1'), ('tree-root', 'rev2')]))
 
154
        finally:
 
155
            repo.unlock()
157
156
        branch.pull(tree.branch)
158
 
        root_knit = repo.weave_store.get_weave('tree-root',
159
 
                                                repo.get_transaction())
160
157
        # Make sure that the next revision in the root knit was retrieved,
161
158
        # even though the text, name, parent_id, etc., were unchanged.
162
 
        self.assertTrue('rev2' in root_knit)
 
159
        repo.lock_read()
 
160
        try:
 
161
            # Make sure fetch retrieved only what we requested
 
162
            self.assertEqual({('tree-root', 'rev2'):(('tree-root', 'rev1'),)},
 
163
                repo.texts.get_parent_map([('tree-root', 'rev2')]))
 
164
        finally:
 
165
            repo.unlock()
163
166
 
164
167
    def test_fetch_incompatible(self):
165
168
        knit_tree = self.make_branch_and_tree('knit', format='knit')
166
169
        knit3_tree = self.make_branch_and_tree('knit3',
167
170
            format='dirstate-with-subtree')
168
171
        knit3_tree.commit('blah')
169
 
        self.assertRaises(errors.IncompatibleRepositories,
170
 
                          knit_tree.branch.fetch, knit3_tree.branch)
 
172
        e = self.assertRaises(errors.IncompatibleRepositories,
 
173
                              knit_tree.branch.fetch, knit3_tree.branch)
 
174
        self.assertContainsRe(str(e),
 
175
            r"(?m).*/knit.*\nis not compatible with\n.*/knit3/.*\n"
 
176
            r"different rich-root support")
171
177
 
172
178
 
173
179
class TestMergeFetch(TestCaseWithTransport):
231
237
        br2 = Branch.open('br2')
232
238
        br1 = Branch.open('br1')
233
239
        wt2 = WorkingTree.open('br2').merge_from_branch(br1)
 
240
        br2.lock_read()
 
241
        self.addCleanup(br2.unlock)
234
242
        for rev_id, text in [('1-2', 'original from 1\n'),
235
243
                             ('1-3', 'agreement\n'),
236
244
                             ('2-1', 'contents in 2\n'),
264
272
 
265
273
    def test_weaves_are_retrieved_once(self):
266
274
        self.build_tree(("source/", "source/file", "target/"))
267
 
        wt = self.make_branch_and_tree('source')
 
275
        # This test depends on knit dasta storage.
 
276
        wt = self.make_branch_and_tree('source', format='dirstate-tags')
268
277
        branch = wt.branch
269
278
        wt.add(["file"], ["id"])
270
279
        wt.commit("added file")
271
 
        print >>open("source/file", 'w'), "blah"
 
280
        open("source/file", 'w').write("blah\n")
272
281
        wt.commit("changed file")
273
282
        target = BzrDir.create_branch_and_repo("target/")
274
283
        source = Branch.open(self.get_readonly_url("source/"))
275
 
        self.assertEqual(target.fetch(source), (2, []))
276
 
        # this is the path to the literal file. As format changes 
 
284
        target.fetch(source)
 
285
        # this is the path to the literal file. As format changes
277
286
        # occur it needs to be updated. FIXME: ask the store for the
278
287
        # path.
279
288
        self.log("web server logs are:")
280
289
        http_logs = self.get_readonly_server().logs
281
290
        self.log('\n'.join(http_logs))
282
 
        # unfortunately this log entry is branch format specific. We could 
283
 
        # factor out the 'what files does this format use' to a method on the 
 
291
        # unfortunately this log entry is branch format specific. We could
 
292
        # factor out the 'what files does this format use' to a method on the
284
293
        # repository, which would let us to this generically. RBC 20060419
 
294
        # RBC 20080408: Or perhaps we can assert that no files are fully read
 
295
        # twice?
285
296
        self.assertEqual(1, self._count_log_matches('/ce/id.kndx', http_logs))
286
297
        self.assertEqual(1, self._count_log_matches('/ce/id.knit', http_logs))
287
298
        self.assertEqual(1, self._count_log_matches('inventory.kndx', http_logs))
288
 
        # this r-h check test will prevent regressions, but it currently already 
 
299
        # this r-h check test will prevent regressions, but it currently already
289
300
        # passes, before the patch to cache-rh is applied :[
290
301
        self.assertTrue(1 >= self._count_log_matches('revision-history',
291
302
                                                     http_logs))
293
304
                                                     http_logs))
294
305
        # FIXME naughty poking in there.
295
306
        self.get_readonly_server().logs = []
296
 
        # check there is nothing more to fetch
297
 
        source = Branch.open(self.get_readonly_url("source/"))
298
 
        self.assertEqual(target.fetch(source), (0, []))
 
307
        # check there is nothing more to fetch.  We take care to re-use the
 
308
        # existing transport so that the request logs we're about to examine
 
309
        # aren't cluttered with redundant probes for a smart server.
 
310
        # XXX: Perhaps this further parameterisation: test http with smart
 
311
        # server, and test http without smart server?
 
312
        source = Branch.open(
 
313
            self.get_readonly_url("source/"),
 
314
            possible_transports=[source.bzrdir.root_transport])
 
315
        target.fetch(source)
299
316
        # should make just two requests
300
317
        http_logs = self.get_readonly_server().logs
301
318
        self.log("web server logs are:")
302
319
        self.log('\n'.join(http_logs))
303
320
        self.assertEqual(1, self._count_log_matches('branch-format', http_logs))
304
321
        self.assertEqual(1, self._count_log_matches('branch/format', http_logs))
305
 
        self.assertEqual(1, self._count_log_matches('repository/format', http_logs))
 
322
        self.assertEqual(1, self._count_log_matches('repository/format',
 
323
            http_logs))
 
324
        self.assertEqual(1, self._count_log_matches('revisions.kndx',
 
325
            http_logs))
306
326
        self.assertTrue(1 >= self._count_log_matches('revision-history',
307
327
                                                     http_logs))
308
328
        self.assertTrue(1 >= self._count_log_matches('last-revision',
309
329
                                                     http_logs))
310
 
        self.assertEqual(4, len(http_logs))
 
330
        self.assertLength(5, http_logs)
 
331
 
 
332
 
 
333
class TestKnitToPackFetch(TestCaseWithTransport):
 
334
 
 
335
    def find_get_record_stream(self, calls, expected_count=1):
 
336
        """In a list of calls, find the last 'get_record_stream'.
 
337
 
 
338
        :param expected_count: The number of calls we should exepect to find.
 
339
            If a different number is found, an assertion is raised.
 
340
        """
 
341
        get_record_call = None
 
342
        call_count = 0
 
343
        for call in calls:
 
344
            if call[0] == 'get_record_stream':
 
345
                call_count += 1
 
346
                get_record_call = call
 
347
        self.assertEqual(expected_count, call_count)
 
348
        return get_record_call
 
349
 
 
350
    def test_fetch_with_deltas_no_delta_closure(self):
 
351
        tree = self.make_branch_and_tree('source', format='dirstate')
 
352
        target = self.make_repository('target', format='pack-0.92')
 
353
        self.build_tree(['source/file'])
 
354
        tree.set_root_id('root-id')
 
355
        tree.add('file', 'file-id')
 
356
        tree.commit('one', rev_id='rev-one')
 
357
        source = tree.branch.repository
 
358
        source.texts = versionedfile.RecordingVersionedFilesDecorator(
 
359
                        source.texts)
 
360
        source.signatures = versionedfile.RecordingVersionedFilesDecorator(
 
361
                        source.signatures)
 
362
        source.revisions = versionedfile.RecordingVersionedFilesDecorator(
 
363
                        source.revisions)
 
364
        source.inventories = versionedfile.RecordingVersionedFilesDecorator(
 
365
                        source.inventories)
 
366
        # precondition
 
367
        self.assertTrue(target._format._fetch_uses_deltas)
 
368
        target.fetch(source, revision_id='rev-one')
 
369
        self.assertEqual(('get_record_stream', [('file-id', 'rev-one')],
 
370
                          target._format._fetch_order, False),
 
371
                         self.find_get_record_stream(source.texts.calls))
 
372
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
373
          target._format._fetch_order, False),
 
374
          self.find_get_record_stream(source.inventories.calls, 2))
 
375
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
376
                          target._format._fetch_order, False),
 
377
                         self.find_get_record_stream(source.revisions.calls))
 
378
        # XXX: Signatures is special, and slightly broken. The
 
379
        # standard item_keys_introduced_by actually does a lookup for every
 
380
        # signature to see if it exists, rather than waiting to do them all at
 
381
        # once at the end. The fetch code then does an all-at-once and just
 
382
        # allows for some of them to be missing.
 
383
        # So we know there will be extra calls, but the *last* one is the one
 
384
        # we care about.
 
385
        signature_calls = source.signatures.calls[-1:]
 
386
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
387
                          target._format._fetch_order, False),
 
388
                         self.find_get_record_stream(signature_calls))
 
389
 
 
390
    def test_fetch_no_deltas_with_delta_closure(self):
 
391
        tree = self.make_branch_and_tree('source', format='dirstate')
 
392
        target = self.make_repository('target', format='pack-0.92')
 
393
        self.build_tree(['source/file'])
 
394
        tree.set_root_id('root-id')
 
395
        tree.add('file', 'file-id')
 
396
        tree.commit('one', rev_id='rev-one')
 
397
        source = tree.branch.repository
 
398
        source.texts = versionedfile.RecordingVersionedFilesDecorator(
 
399
                        source.texts)
 
400
        source.signatures = versionedfile.RecordingVersionedFilesDecorator(
 
401
                        source.signatures)
 
402
        source.revisions = versionedfile.RecordingVersionedFilesDecorator(
 
403
                        source.revisions)
 
404
        source.inventories = versionedfile.RecordingVersionedFilesDecorator(
 
405
                        source.inventories)
 
406
        # XXX: This won't work in general, but for the dirstate format it does.
 
407
        old_fetch_uses_deltas_setting = target._format._fetch_uses_deltas
 
408
        def restore():
 
409
            target._format._fetch_uses_deltas = old_fetch_uses_deltas_setting
 
410
        self.addCleanup(restore)
 
411
        target._format._fetch_uses_deltas = False
 
412
        target.fetch(source, revision_id='rev-one')
 
413
        self.assertEqual(('get_record_stream', [('file-id', 'rev-one')],
 
414
                          target._format._fetch_order, True),
 
415
                         self.find_get_record_stream(source.texts.calls))
 
416
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
417
            target._format._fetch_order, True),
 
418
            self.find_get_record_stream(source.inventories.calls, 2))
 
419
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
420
                          target._format._fetch_order, True),
 
421
                         self.find_get_record_stream(source.revisions.calls))
 
422
        # XXX: Signatures is special, and slightly broken. The
 
423
        # standard item_keys_introduced_by actually does a lookup for every
 
424
        # signature to see if it exists, rather than waiting to do them all at
 
425
        # once at the end. The fetch code then does an all-at-once and just
 
426
        # allows for some of them to be missing.
 
427
        # So we know there will be extra calls, but the *last* one is the one
 
428
        # we care about.
 
429
        signature_calls = source.signatures.calls[-1:]
 
430
        self.assertEqual(('get_record_stream', [('rev-one',)],
 
431
                          target._format._fetch_order, True),
 
432
                         self.find_get_record_stream(signature_calls))
 
433
 
 
434
    def test_fetch_revisions_with_deltas_into_pack(self):
 
435
        # See BUG #261339, dev versions of bzr could accidentally create deltas
 
436
        # in revision texts in knit branches (when fetching from packs). So we
 
437
        # ensure that *if* a knit repository has a delta in revisions, that it
 
438
        # gets properly expanded back into a fulltext when stored in the pack
 
439
        # file.
 
440
        tree = self.make_branch_and_tree('source', format='dirstate')
 
441
        target = self.make_repository('target', format='pack-0.92')
 
442
        self.build_tree(['source/file'])
 
443
        tree.set_root_id('root-id')
 
444
        tree.add('file', 'file-id')
 
445
        tree.commit('one', rev_id='rev-one')
 
446
        # Hack the KVF for revisions so that it "accidentally" allows a delta
 
447
        tree.branch.repository.revisions._max_delta_chain = 200
 
448
        tree.commit('two', rev_id='rev-two')
 
449
        source = tree.branch.repository
 
450
        # Ensure that we stored a delta
 
451
        source.lock_read()
 
452
        self.addCleanup(source.unlock)
 
453
        record = source.revisions.get_record_stream([('rev-two',)],
 
454
            'unordered', False).next()
 
455
        self.assertEqual('knit-delta-gz', record.storage_kind)
 
456
        target.fetch(tree.branch.repository, revision_id='rev-two')
 
457
        # The record should get expanded back to a fulltext
 
458
        target.lock_read()
 
459
        self.addCleanup(target.unlock)
 
460
        record = target.revisions.get_record_stream([('rev-two',)],
 
461
            'unordered', False).next()
 
462
        self.assertEqual('knit-ft-gz', record.storage_kind)
 
463
 
 
464
    def test_fetch_with_fallback_and_merge(self):
 
465
        builder = self.make_branch_builder('source', format='pack-0.92')
 
466
        builder.start_series()
 
467
        # graph
 
468
        #   A
 
469
        #   |\
 
470
        #   B C
 
471
        #   | |
 
472
        #   | D
 
473
        #   | |
 
474
        #   | E
 
475
        #    \|
 
476
        #     F
 
477
        # A & B are present in the base (stacked-on) repository, A-E are
 
478
        # present in the source.
 
479
        # This reproduces bug #304841
 
480
        # We need a large enough inventory that total size of compressed deltas
 
481
        # is shorter than the size of a compressed fulltext. We have to use
 
482
        # random ids because otherwise the inventory fulltext compresses too
 
483
        # well and the deltas get bigger.
 
484
        to_add = [
 
485
            ('add', ('', 'TREE_ROOT', 'directory', None))]
 
486
        for i in xrange(10):
 
487
            fname = 'file%03d' % (i,)
 
488
            fileid = '%s-%s' % (fname, osutils.rand_chars(64))
 
489
            to_add.append(('add', (fname, fileid, 'file', 'content\n')))
 
490
        builder.build_snapshot('A', None, to_add)
 
491
        builder.build_snapshot('B', ['A'], [])
 
492
        builder.build_snapshot('C', ['A'], [])
 
493
        builder.build_snapshot('D', ['C'], [])
 
494
        builder.build_snapshot('E', ['D'], [])
 
495
        builder.build_snapshot('F', ['E', 'B'], [])
 
496
        builder.finish_series()
 
497
        source_branch = builder.get_branch()
 
498
        source_branch.bzrdir.sprout('base', revision_id='B')
 
499
        target_branch = self.make_branch('target', format='1.6')
 
500
        target_branch.set_stacked_on_url('../base')
 
501
        source = source_branch.repository
 
502
        source.lock_read()
 
503
        self.addCleanup(source.unlock)
 
504
        source.inventories = versionedfile.OrderingVersionedFilesDecorator(
 
505
                        source.inventories,
 
506
                        key_priority={('E',): 1, ('D',): 2, ('C',): 4,
 
507
                                      ('F',): 3})
 
508
        # Ensure that the content is yielded in the proper order, and given as
 
509
        # the expected kinds
 
510
        records = [(record.key, record.storage_kind)
 
511
                   for record in source.inventories.get_record_stream(
 
512
                        [('D',), ('C',), ('E',), ('F',)], 'unordered', False)]
 
513
        self.assertEqual([(('E',), 'knit-delta-gz'), (('D',), 'knit-delta-gz'),
 
514
                          (('F',), 'knit-delta-gz'), (('C',), 'knit-delta-gz')],
 
515
                          records)
 
516
 
 
517
        target_branch.lock_write()
 
518
        self.addCleanup(target_branch.unlock)
 
519
        target = target_branch.repository
 
520
        target.fetch(source, revision_id='F')
 
521
        # 'C' should be expanded to a fulltext, but D and E should still be
 
522
        # deltas
 
523
        stream = target.inventories.get_record_stream(
 
524
            [('C',), ('D',), ('E',), ('F',)],
 
525
            'unordered', False)
 
526
        kinds = dict((record.key, record.storage_kind) for record in stream)
 
527
        self.assertEqual({('C',): 'knit-ft-gz', ('D',): 'knit-delta-gz',
 
528
                          ('E',): 'knit-delta-gz', ('F',): 'knit-delta-gz'},
 
529
                         kinds)
 
530
 
 
531
 
 
532
class Test1To2Fetch(TestCaseWithTransport):
 
533
    """Tests for Model1To2 failure modes"""
 
534
 
 
535
    def make_tree_and_repo(self):
 
536
        self.tree = self.make_branch_and_tree('tree', format='pack-0.92')
 
537
        self.repo = self.make_repository('rich-repo', format='rich-root-pack')
 
538
        self.repo.lock_write()
 
539
        self.addCleanup(self.repo.unlock)
 
540
 
 
541
    def do_fetch_order_test(self, first, second):
 
542
        """Test that fetch works no matter what the set order of revision is.
 
543
 
 
544
        This test depends on the order of items in a set, which is
 
545
        implementation-dependant, so we test A, B and then B, A.
 
546
        """
 
547
        self.make_tree_and_repo()
 
548
        self.tree.commit('Commit 1', rev_id=first)
 
549
        self.tree.commit('Commit 2', rev_id=second)
 
550
        self.repo.fetch(self.tree.branch.repository, second)
 
551
 
 
552
    def test_fetch_order_AB(self):
 
553
        """See do_fetch_order_test"""
 
554
        self.do_fetch_order_test('A', 'B')
 
555
 
 
556
    def test_fetch_order_BA(self):
 
557
        """See do_fetch_order_test"""
 
558
        self.do_fetch_order_test('B', 'A')
 
559
 
 
560
    def get_parents(self, file_id, revision_id):
 
561
        self.repo.lock_read()
 
562
        try:
 
563
            parent_map = self.repo.texts.get_parent_map([(file_id, revision_id)])
 
564
            return parent_map[(file_id, revision_id)]
 
565
        finally:
 
566
            self.repo.unlock()
 
567
 
 
568
    def test_fetch_ghosts(self):
 
569
        self.make_tree_and_repo()
 
570
        self.tree.commit('first commit', rev_id='left-parent')
 
571
        self.tree.add_parent_tree_id('ghost-parent')
 
572
        fork = self.tree.bzrdir.sprout('fork', 'null:').open_workingtree()
 
573
        fork.commit('not a ghost', rev_id='not-ghost-parent')
 
574
        self.tree.branch.repository.fetch(fork.branch.repository,
 
575
                                     'not-ghost-parent')
 
576
        self.tree.add_parent_tree_id('not-ghost-parent')
 
577
        self.tree.commit('second commit', rev_id='second-id')
 
578
        self.repo.fetch(self.tree.branch.repository, 'second-id')
 
579
        root_id = self.tree.get_root_id()
 
580
        self.assertEqual(
 
581
            ((root_id, 'left-parent'), (root_id, 'not-ghost-parent')),
 
582
            self.get_parents(root_id, 'second-id'))
 
583
 
 
584
    def make_two_commits(self, change_root, fetch_twice):
 
585
        self.make_tree_and_repo()
 
586
        self.tree.commit('first commit', rev_id='first-id')
 
587
        if change_root:
 
588
            self.tree.set_root_id('unique-id')
 
589
        self.tree.commit('second commit', rev_id='second-id')
 
590
        if fetch_twice:
 
591
            self.repo.fetch(self.tree.branch.repository, 'first-id')
 
592
        self.repo.fetch(self.tree.branch.repository, 'second-id')
 
593
 
 
594
    def test_fetch_changed_root(self):
 
595
        self.make_two_commits(change_root=True, fetch_twice=False)
 
596
        self.assertEqual((), self.get_parents('unique-id', 'second-id'))
 
597
 
 
598
    def test_two_fetch_changed_root(self):
 
599
        self.make_two_commits(change_root=True, fetch_twice=True)
 
600
        self.assertEqual((), self.get_parents('unique-id', 'second-id'))
 
601
 
 
602
    def test_two_fetches(self):
 
603
        self.make_two_commits(change_root=False, fetch_twice=True)
 
604
        self.assertEqual((('TREE_ROOT', 'first-id'),),
 
605
            self.get_parents('TREE_ROOT', 'second-id'))