view tests/test-import.t @ 3452:8275ef099135 stable

amend: query the wdir parent after taking lock (issue5266)

If we query wdir parent without taking a lock, that can lead to bugs because the
wdir parent can change is another process has changed the wdir parent.

One such example of this was issue 5266. When a user is running amend and that
amend is waiting for commit message, the user runs another amend which waits for
lock. The second amend is waiting for lock, but has already read the description
from the parent of working directory to use. Once the first amend completes the
wdir parent changes but we still have the description from an old wdir parent.

This patch fixes the bug by querying the description after taking lock.
Attempts were made to add test for this but the results were unstable because
they depend on time in which lock is released.

This feature requires mercurial 3.0
(and the `only()` revset is 3.0 specific)

  $ (hg help revset | grep '"only(' > /dev/null) || exit 80

Test creation of obsolescence marker by path import

  $ hg init auto-obsolete
  $ cd auto-obsolete
  $ echo '[extensions]' >> $HGRCPATH
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
  $ echo A > a
  $ hg commit -Am A
  adding a
  $ echo B > b
  $ hg commit -Am B
  adding b
  $ hg up '.^'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo C > c
  $ hg commit -Am C
  adding c
  created new head
  $ hg log -G
  @  changeset:   2:eb8dd0f31b51
  |  tag:         tip
  |  parent:      0:f2bbf19cf96d
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     C
  |
  | o  changeset:   1:95b760afef3c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     B
  |
  o  changeset:   0:f2bbf19cf96d
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A
  

(actual test)

  $ hg export 'desc(B)' | hg import - --obsolete
  applying patch from stdin
  $ hg log -G
  @  changeset:   3:00c49133f17e
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     B
  |
  o  changeset:   2:eb8dd0f31b51
  |  parent:      0:f2bbf19cf96d
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     C
  |
  o  changeset:   0:f2bbf19cf96d
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A
  
  $ hg debugobsolete
  95b760afef3c234ffb3f9fd391edcb36e60921a4 00c49133f17e5e5a52b6ef1b6d516c0e90b56d8a 0 (*) {'user': 'test'} (glob)

  $ hg rollback
  repository tip rolled back to revision 2 (undo import)
  working directory now based on revision 2
  $ hg log -G
  @  changeset:   2:eb8dd0f31b51
  |  tag:         tip
  |  parent:      0:f2bbf19cf96d
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     C
  |
  | o  changeset:   1:95b760afef3c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     B
  |
  o  changeset:   0:f2bbf19cf96d
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A
  
  $ hg debugobsolete