=======================================================================

Check potential race condition around transaction and working copy data

=======================================================================

#testcases bookmarks-in-store bookmarks-wc-level

The transaction is garanteed to run with the lock, but may runs without the

wlock. So if the transaction backup/restore some content related to the

working-copy and protected by the wlock, we might run into trouble if another

process grab the wlock and modify them.

This test file is testing various cases where such parallel changes happens to

validate the transaction behavior.

Other is used to get a simple pull source. As pull is a simple way to create

transaction without the wlock.

Setup

=====

Avoid long deadlock

  $ cat << EOF >> $HGRCPATH

  > [ui]

  > timeout=10

  > EOF

#if bookmarks-in-store

  $ cat << EOF >> $HGRCPATH

  > [format]

  > bookmarks-in-store = yes

  > EOF

#endif

  $ hg init repo

  $ cd repo

  $ for filename in a b c d e f g h i j k l m; do

  >     echo $filename > default_$filename

  >     hg add default_$filename

  >     hg commit --quiet --message default_$filename

  > done

  $ hg bookmark --rev . foo

  $ hg branch babar

  marked working directory as branch babar

  (branches are permanent and global, did you want a bookmark?)

  $ for filename in a b c d e f g h i j k l m; do

  >     echo $filename > babar_$filename

  >     hg add babar_$filename

  >     hg commit --quiet --message babar_$filename

  > done

  $ hg bookmark --rev . bar

  $ hg up 'desc("default_m")'

  0 files updated, 0 files merged, 13 files removed, 0 files unresolved

  $ hg log -G -T '[{branch}] ({bookmarks}) {desc}\n'

  o  [babar] (bar) babar_m

  |

  o  [babar] () babar_l

  |

  o  [babar] () babar_k

  |

  o  [babar] () babar_j

  |

  o  [babar] () babar_i

  |

  o  [babar] () babar_h

  |

  o  [babar] () babar_g

  |

  o  [babar] () babar_f

  |

  o  [babar] () babar_e

  |

  o  [babar] () babar_d

  |

  o  [babar] () babar_c

  |

  o  [babar] () babar_b

  |

  o  [babar] () babar_a

  |

  @  [default] (foo) default_m

  |

  o  [default] () default_l

  |

  o  [default] () default_k

  |

  o  [default] () default_j

  |

  o  [default] () default_i

  |

  o  [default] () default_h

  |

  o  [default] () default_g

  |

  o  [default] () default_f

  |

  o  [default] () default_e

  |

  o  [default] () default_d

  |

  o  [default] () default_c

  |

  o  [default] () default_b

  |

  o  [default] () default_a

  $ cat << EOF >> ../txn-close.sh

  > rm -f $TESTTMP/transaction-continue

  > $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-continue $TESTTMP/transaction-waiting

  > rm -f $TESTTMP/transaction-waiting

  > exit 1

  > EOF

  $ cat << EOF >> .hg/hgrc

  > [hooks]

  > pretxnclose.test = sh $TESTTMP/txn-close.sh

  > EOF

Check the overall logic is working, the transaction is holding the `lock` , but

not the `wlock`, then get aborted on a signal-file.

  $ hg phase --rev 0

  0: draft

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ echo y | hg --config ui.interactive=yes debuglock --set-wlock

  ready to release the lock (y)?  y

  $ echo y | hg --config ui.interactive=yes debuglock --set-lock

  abort: lock is already held

  [255]

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg phase --rev 0

  0: draft

  $ cat ../log.err

  abort: pretxnclose.test hook exited with status 1

Actual testing

==============

Changing tracked file

---------------------

  $ hg status

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg forget default_a

  $ hg status

  R default_a

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg status

  R default_a

  $ hg revert --all --quiet

Changing branch from default

----------------------------

  $ hg branch

  default

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg branch celeste

  marked working directory as branch celeste

  $ hg branch

  celeste

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg branch

  celeste

Changing branch from another one

--------------------------------

  $ hg up babar --quiet

  $ hg branch

  babar

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg branch celeste

  marked working directory as branch celeste

  $ hg branch

  celeste

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg branch

  celeste

updating working copy

---------------------

  $ hg st

  $ hg log --rev . -T '{desc}\n'

  babar_m

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg update "parents(.)" --quiet

  $ hg log --rev . -T '{desc}\n'

  babar_l

  $ hg st

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg log --rev . -T '{desc}\n'

  babar_l

  $ hg st

  $ hg purge --no-confirm

  $ hg up --quiet babar

Activating a bookmark

---------------------

(without going through the bookmark command)

Show the activation/desactivation pattern that exist without taking the store

lock.

  $ hg log -r . -T '= {activebookmark} =\n'

  =  =

  $ hg up bar

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (activating bookmark bar)

  $ hg log -r . -T '= {activebookmark} =\n'

  = bar =

  $ hg up .

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (leaving bookmark bar)

  $ hg log -r . -T '= {activebookmark} =\n'

  =  =

Activating the bookmark during a transaction

  $ hg up . --quiet

  $ hg log -r . -T '= {activebookmark} =\n'

  =  =

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg up bar

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (activating bookmark bar)

  $ hg log -r . -T '= {activebookmark} =\n'

  = bar =

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg log -r . -T '= {activebookmark} =\n'

  = bar =

Deactivating the bookmark

  $ hg up bar --quiet

  $ hg log -r . -T '= {activebookmark} =\n'

  = bar =

  $ hg phase --public --rev 0 2> ../log.err &

  $ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/transaction-waiting

  $ hg up .

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (leaving bookmark bar)

  $ hg log -r . -T '= {activebookmark} =\n'

  =  =

  $ touch $TESTTMP/transaction-continue

  $ wait

  $ hg log -r . -T '= {activebookmark} =\n'

  =  =