tests/test-bookmarks-corner-case.t
author Raphaël Gomès <rgomes@octobus.net>
Thu, 28 Mar 2024 14:47:20 +0000
branchstable
changeset 51540 803e61387e86
parent 47922 e5efbb11e185
permissions -rw-r--r--
relnotes: add 6.7.2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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================================
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Test corner case around bookmark
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================================
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This test file is meant to gather test around bookmark that are specific
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 enough to not find a place elsewhere.
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Test bookmark/changelog race condition
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======================================
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The data from the bookmark file are filtered to only contains bookmark with
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node known to the changelog. If the cache invalidation between these two bits
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goes wrong, bookmark can be dropped.
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Setup
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-----
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initial repository setup
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  $ hg init bookrace-server
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  $ cd bookrace-server
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  $ echo a > a
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  $ hg add a
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  $ hg commit -m root
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  $ echo a >> a
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  $ hg bookmark book-A
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  $ hg commit -m A0
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  $ hg up 'desc(root)'
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  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  (leaving bookmark book-A)
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  $ echo b > b
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  $ hg add b
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  $ hg bookmark book-B
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  $ hg commit -m B0
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  created new head
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  $ hg up null
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  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
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  (leaving bookmark book-B)
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  $ hg phase --public --rev 'all()'
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  $ hg log -G
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  o  changeset:   2:c79985706978
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  |  bookmark:    book-B
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  |  tag:         tip
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  |  parent:      0:6569b5a81c7e
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  |  user:        test
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  |  date:        Thu Jan 01 00:00:00 1970 +0000
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  |  summary:     B0
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  |
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  | o  changeset:   1:39c28d785860
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  |/   bookmark:    book-A
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  |    user:        test
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  |    date:        Thu Jan 01 00:00:00 1970 +0000
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  |    summary:     A0
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  |
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  o  changeset:   0:6569b5a81c7e
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     user:        test
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     date:        Thu Jan 01 00:00:00 1970 +0000
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     summary:     root
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  $ hg book
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     book-A                    1:39c28d785860
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     book-B                    2:c79985706978
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  $ cd ..
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Add new changeset on each bookmark in distinct clones
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  $ hg clone ssh://user@dummy/bookrace-server client-A
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  requesting all changes
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  adding changesets
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  adding manifests
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  adding file changes
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  added 3 changesets with 3 changes to 2 files (+1 heads)
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  new changesets 6569b5a81c7e:c79985706978
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  updating to branch default
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  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  $ hg -R client-A update book-A
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  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
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  (activating bookmark book-A)
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  $ echo a >> client-A/a
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  $ hg -R client-A commit -m A1
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  $ hg clone ssh://user@dummy/bookrace-server client-B
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  requesting all changes
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  adding changesets
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  adding manifests
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  adding file changes
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  added 3 changesets with 3 changes to 2 files (+1 heads)
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  new changesets 6569b5a81c7e:c79985706978
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  updating to branch default
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  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  $ hg -R client-B update book-B
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  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  (activating bookmark book-B)
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  $ echo b >> client-B/b
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  $ hg -R client-B commit -m B1
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extension to reproduce the race
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-------------------------------
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If two process are pushing we want to make sure the following happens:
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* process A read changelog
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* process B to its full push
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* process A read bookmarks
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* process A proceed with rest of the push
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We build a server side extension for this purpose
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  $ cat > bookrace.py << EOF
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  > import atexit
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  > import os
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  > import time
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  > from mercurial import bookmarks, error, extensions
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  > 
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  > def wait(repo):
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  >     if not os.path.exists('push-A-started'):
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  >         assert repo._currentlock(repo._lockref) is None
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   117
  >         assert repo._currentlock(repo._wlockref) is None
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   118
  >         repo.ui.status(b'setting raced push up\n')
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   119
  >         with open('push-A-started', 'w'):
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   120
  >             pass
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   121
  >     clock = 300
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   122
  >     while not os.path.exists('push-B-done'):
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   123
  >         clock -= 1
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   124
  >         if clock <= 0:
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   125
  >             raise error.Abort("race scenario timed out")
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   126
  >         time.sleep(0.1)
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   127
  > 
42509
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   128
  > def reposetup(ui, repo):
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   129
  >     class racedrepo(repo.__class__):
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   130
  >         @property
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   131
  >         def _bookmarks(self):
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   132
  >             wait(self)
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   133
  >             return super(racedrepo, self)._bookmarks
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   134
  >     repo.__class__ = racedrepo
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   135
  > 
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   136
  > def e():
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   137
  >     with open('push-A-done', 'w'):
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   138
  >         pass
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   139
  > atexit.register(e)
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   140
  > EOF
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   141
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   142
Actual test
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   143
-----------
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   144
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   145
Start the raced push.
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   146
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   147
  $ cat >> bookrace-server/.hg/hgrc << EOF
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   148
  > [extensions]
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   149
  > bookrace=$TESTTMP/bookrace.py
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   150
  > EOF
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   151
  $ hg push -R client-A -r book-A >push-output.txt 2>&1 &
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   152
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   153
Wait up to 30 seconds for that push to start.
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   154
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   155
  $ clock=30
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   156
  $ while [ ! -f push-A-started ] && [ $clock -gt 0 ] ; do
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  >    clock=`expr $clock - 1`
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   158
  >    sleep 1
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   159
  > done
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   160
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   161
Do the other push.
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   162
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   163
  $ cat >> bookrace-server/.hg/hgrc << EOF
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   164
  > [extensions]
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   165
  > bookrace=!
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   166
  > EOF
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   167
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   168
  $ hg push -R client-B -r book-B
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   169
  pushing to ssh://user@dummy/bookrace-server
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   170
  searching for changes
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   171
  remote: adding changesets
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   172
  remote: adding manifests
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   173
  remote: adding file changes
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   174
  remote: added 1 changesets with 1 changes to 1 files
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   175
  updating bookmark book-B
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   176
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   177
Signal the raced put that we are done (it waits up to 30 seconds).
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   179
  $ touch push-B-done
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   180
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   181
Wait for the raced push to finish (with the remaning of the initial 30 seconds).
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   182
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   183
  $ while [ ! -f push-A-done ] && [ $clock -gt 0 ] ; do
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   184
  >    clock=`expr $clock - 1`
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   185
  >    sleep 1
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   186
  > done
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   187
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   188
Check raced push output.
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   189
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  $ cat push-output.txt
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   191
  pushing to ssh://user@dummy/bookrace-server
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   192
  searching for changes
42896
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   193
  remote: setting raced push up
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   194
  remote has heads on branch 'default' that are not known locally: f26c3b5167d1
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   195
  remote: adding changesets
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   196
  remote: adding manifests
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   197
  remote: adding file changes
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   198
  remote: added 1 changesets with 1 changes to 1 files
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   199
  updating bookmark book-A
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   200
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   201
Check result of the push.
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   202
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   203
  $ hg -R bookrace-server log -G
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   204
  o  changeset:   4:9ce3b28c16de
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   205
  |  bookmark:    book-A
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   206
  |  tag:         tip
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   207
  |  parent:      1:39c28d785860
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   208
  |  user:        test
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   209
  |  date:        Thu Jan 01 00:00:00 1970 +0000
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   210
  |  summary:     A1
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   211
  |
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   212
  | o  changeset:   3:f26c3b5167d1
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   213
  | |  bookmark:    book-B
42322
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  | |  user:        test
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  | |  date:        Thu Jan 01 00:00:00 1970 +0000
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   216
  | |  summary:     B1
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   217
  | |
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   218
  | o  changeset:   2:c79985706978
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   219
  | |  parent:      0:6569b5a81c7e
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   220
  | |  user:        test
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   221
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
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   222
  | |  summary:     B0
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   223
  | |
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   224
  o |  changeset:   1:39c28d785860
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   225
  |/   user:        test
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   226
  |    date:        Thu Jan 01 00:00:00 1970 +0000
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   227
  |    summary:     A0
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   228
  |
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   229
  o  changeset:   0:6569b5a81c7e
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   230
     user:        test
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     date:        Thu Jan 01 00:00:00 1970 +0000
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   232
     summary:     root
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   233
  
d2c871b78c36 bookmark: add a test for a race condition on push
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   234
  $ hg -R bookrace-server book
d2c871b78c36 bookmark: add a test for a race condition on push
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
diff changeset
   235
     book-A                    4:9ce3b28c16de
42682
e0cf09bc35ef bookmarks: actual fix for race condition deleting bookmark
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42624
diff changeset
   236
     book-B                    3:f26c3b5167d1