tests: add tests for corrupt .hg/shelved/ directory

I don't care much how we behave in these cases, except that we should
provide a way for the user to get out of the broken state.

Differential Revision: https://phab.mercurial-scm.org/D9718

tests/test-shelve2.t

@@ -1,945 +1,997 b''
 #testcases stripbased phasebased
 #testcases abortflag abortcommand
 #testcases continueflag continuecommand
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > mq =
   > [defaults]
   > diff = --nodates --git
   > qnew = --date '0 0'
   > [shelve]
   > maxbackups = 2
   > EOF
 
 #if phasebased
 
   $ cat <<EOF >> $HGRCPATH
   > [format]
   > internal-phase = yes
   > EOF
 
 #endif
 
 #if abortflag
   $ cat >> $HGRCPATH <<EOF
   > [alias]
   > abort = unshelve --abort
   > EOF
 #endif
 
 #if continueflag
   $ cat >> $HGRCPATH <<EOF
   > [alias]
   > continue = unshelve --continue
   > EOF
 #endif
 
 shelve should leave dirstate clean (issue4055)
 
   $ hg init shelverebase
   $ cd shelverebase
   $ printf 'x\ny\n' > x
   $ echo z > z
   $ hg commit -Aqm xy
   $ echo z >> x
   $ hg commit -Aqm z
   $ hg up 5c4c67fb7dce
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ printf 'a\nx\ny\nz\n' > x
   $ hg commit -Aqm xyz
   $ echo c >> z
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ hg rebase -d 6c103be8f4e4 --config extensions.rebase=
   rebasing 2:323bfa07f744( tip)? "xyz" (re)
   merging x
   saved backup bundle to \$TESTTMP/shelverebase/.hg/strip-backup/323bfa07f744-(78114325|7ae538ef)-rebase.hg (re)
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   $ hg status
   M z
 
   $ cd ..
 
 shelve should only unshelve pending changes (issue4068)
 
   $ hg init onlypendingchanges
   $ cd onlypendingchanges
   $ touch a
   $ hg ci -Aqm a
   $ touch b
   $ hg ci -Aqm b
   $ hg up -q 3903775176ed
   $ touch c
   $ hg ci -Aqm c
 
   $ touch d
   $ hg add d
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg up -q 0e067c57feba
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   $ hg status
   A d
 
 unshelve should work on an ancestor of the original commit
 
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg up 3903775176ed
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   $ hg status
   A d
 
 test bug 4073 we need to enable obsolete markers for it
 
   $ cat >> $HGRCPATH << EOF
   > [experimental]
   > evolution.createmarkers=True
   > EOF
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg debugobsolete `hg log -r 0e067c57feba -T '{node}'`
   1 new obsolescence markers
   obsoleted 1 changesets
   $ hg unshelve
   unshelving change 'default'
 
 unshelve should leave unknown files alone (issue4113)
 
   $ echo e > e
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   ? e
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   A d
   ? e
   $ cat e
   e
 
 unshelve should keep a copy of unknown files
 
   $ hg add e
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo z > e
   $ hg unshelve
   unshelving change 'default'
   $ cat e
   e
   $ cat e.orig
   z
   $ rm e.orig
 
 restores backup of unknown file to right directory
 
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo z > e
   $ mkdir dir
   $ hg unshelve --cwd dir
   unshelving change 'default'
   $ rmdir dir
   $ cat e
   e
   $ cat e.orig
   z
 
 unshelve and conflicts with tracked and untracked files
 
  preparing:
 
   $ rm -f *.orig
   $ hg ci -qm 'commit stuff'
   $ hg phase -p null:
 
  no other changes - no merge:
 
   $ echo f > f
   $ hg add f
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo g > f
   $ hg unshelve
   unshelving change 'default'
   $ hg st
   A f
   ? f.orig
   $ cat f
   f
   $ cat f.orig
   g
 
  other uncommitted changes - merge:
 
   $ hg st
   A f
   ? f.orig
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
 #if repobundlerepo
   $ hg log -G --template '{rev}  {desc|firstline}  {author}' -R bundle://.hg/shelved/default.hg -r 'bundle()' --hidden
   o  [48]  changes to: commit stuff  shelve@localhost (re)
   |
   ~
 #endif
   $ hg log -G --template '{rev}  {desc|firstline}  {author}'
   @  [37]  commit stuff  test (re)
   |
   | o  2  c  test
   |/
   o  0  a  test
   
   $ mv f.orig f
   $ echo 1 > a
   $ hg unshelve --date '1073741824 0'
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
 
 #if phasebased
   $ hg log -G --template '{rev}  {desc|firstline}  {author}  {date|isodate}'
   @  9  pending changes temporary commit  shelve@localhost  2004-01-10 13:37 +0000
   |
   | @  8  changes to: commit stuff  shelve@localhost  1970-01-01 00:00 +0000
   |/
   o  7  commit stuff  test  1970-01-01 00:00 +0000
   |
   | o  2  c  test  1970-01-01 00:00 +0000
   |/
   o  0  a  test  1970-01-01 00:00 +0000
   
 #endif
 
 #if stripbased
   $ hg log -G --template '{rev}  {desc|firstline}  {author}  {date|isodate}'
   @  5  changes to: commit stuff  shelve@localhost  1970-01-01 00:00 +0000
   |
   | @  4  pending changes temporary commit  shelve@localhost  2004-01-10 13:37 +0000
   |/
   o  3  commit stuff  test  1970-01-01 00:00 +0000
   |
   | o  2  c  test  1970-01-01 00:00 +0000
   |/
   o  0  a  test  1970-01-01 00:00 +0000
   
 #endif
 
   $ hg st
   M f
   ? f.orig
   $ cat f
   <<<<<<< working-copy: d44eae5c3d33 - shelve: pending changes temporary commit
   g
   =======
   f
   >>>>>>> shelve:       aef214a5229c - shelve: changes to: commit stuff
   $ cat f.orig
   g
   $ hg unshelve --abort -t false
   tool option will be ignored
   unshelve of 'default' aborted
   $ hg st
   M a
   ? f.orig
   $ cat f.orig
   g
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   $ hg st
   M a
   A f
   ? f.orig
 
  other committed changes - merge:
 
   $ hg shelve f
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg ci a -m 'intermediate other change'
   $ mv f.orig f
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ hg st
   M f
   ? f.orig
   $ cat f
   <<<<<<< working-copy: 6b563750f973 - test: intermediate other change
   g
   =======
   f
   >>>>>>> shelve:       aef214a5229c - shelve: changes to: commit stuff
   $ cat f.orig
   g
 
 #if abortcommand
 when in dry-run mode
   $ hg abort --dry-run
   unshelve in progress, will be aborted
 #endif
 
   $ hg abort
   unshelve of 'default' aborted
   $ hg st
   ? f.orig
   $ cat f.orig
   g
   $ hg shelve --delete default
   $ cd ..
 
 you shouldn't be able to ask for the patch/stats of the most recent shelve if
 there are no shelves
 
   $ hg init noshelves
   $ cd noshelves
 
   $ hg shelve --patch
   abort: there are no shelves to show
   [255]
   $ hg shelve --stat
   abort: there are no shelves to show
   [255]
 
   $ cd ..
 
 test .orig files go where the user wants them to
 ---------------------------------------------------------------
   $ hg init salvage
   $ cd salvage
   $ echo 'content' > root
   $ hg commit -A -m 'root' -q
   $ echo '' > root
   $ hg shelve -q
   $ echo 'contADDent' > root
   $ hg unshelve -q --config 'ui.origbackuppath=.hg/origbackups'
   warning: conflicts while merging root! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ ls .hg/origbackups
   root
   $ rm -rf .hg/origbackups
 
 test Abort unshelve always gets user out of the unshelved state
 ---------------------------------------------------------------
 
 with a corrupted shelve state file
   $ sed 's/ae8c668541e8/123456789012/' .hg/shelvedstate > ../corrupt-shelvedstate
   $ mv ../corrupt-shelvedstate .hg/shelvestate
   $ hg unshelve --abort 2>&1 | grep 'aborted'
   unshelve of 'default' aborted
   $ hg summary
   parent: 0:ae8c668541e8 tip
    root
   branch: default
   commit: 1 modified
   update: (current)
   phases: 1 draft
   $ hg up -C .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cd ..
 
 Shelve and unshelve unknown files. For the purposes of unshelve, a shelved
 unknown file is the same as a shelved added file, except that it will be in
 unknown state after unshelve if and only if it was either absent or unknown
 before the unshelve operation.
 
   $ hg init unknowns
   $ cd unknowns
 
 The simplest case is if I simply have an unknown file that I shelve and unshelve
 
   $ echo unknown > unknown
   $ hg status
   ? unknown
   $ hg shelve --unknown
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   ? unknown
   $ rm unknown
 
 If I shelve, add the file, and unshelve, does it stay added?
 
   $ echo unknown > unknown
   $ hg shelve -u
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ touch unknown
   $ hg add unknown
   $ hg status
   A unknown
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging unknown
   $ hg status
   A unknown
   $ hg forget unknown
   $ rm unknown
 
 And if I shelve, commit, then unshelve, does it become modified?
 
   $ echo unknown > unknown
   $ hg shelve -u
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg status
   $ touch unknown
   $ hg add unknown
   $ hg commit -qm "Add unknown"
   $ hg status
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   merging unknown
   $ hg status
   M unknown
   $ hg remove --force unknown
   $ hg commit -qm "Remove unknown"
 
   $ cd ..
 
 We expects that non-bare shelve keeps newly created branch in
 working directory.
 
   $ hg init shelve-preserve-new-branch
   $ cd shelve-preserve-new-branch
   $ echo "a" >> a
   $ hg add a
   $ echo "b" >> b
   $ hg add b
   $ hg commit -m "ab"
   $ echo "aa" >> a
   $ echo "bb" >> b
   $ hg branch new-branch
   marked working directory as branch new-branch
   (branches are permanent and global, did you want a bookmark?)
   $ hg status
   M a
   M b
   $ hg branch
   new-branch
   $ hg shelve a
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   M b
   $ touch "c" >> c
   $ hg add c
   $ hg status
   M b
   A c
   $ hg shelve --exclude c
   shelved as default-01
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   A c
   $ hg shelve --include c
   shelved as default-02
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg branch
   new-branch
   $ hg status
   $ echo "d" >> d
   $ hg add d
   $ hg status
   A d
 
 We expect that bare-shelve will not keep branch in current working directory.
 
   $ hg shelve
   shelved as default-03
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg branch
   default
   $ cd ..
 
 When i shelve commit on newly created branch i expect
 that after unshelve newly created branch will be preserved.
 
   $ hg init shelve_on_new_branch_simple
   $ cd shelve_on_new_branch_simple
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "bbb" >> b
   $ hg status
   ? b
   $ hg unshelve
   unshelving change 'default'
   marked working directory as branch test
   $ hg status
   M a
   ? b
   $ hg branch
   test
   $ cd ..
 
 When i shelve commit on newly created branch, make
 some changes, unshelve it and running into merge
 conflicts i expect that after fixing them and
 running unshelve --continue newly created branch
 will be preserved.
 
   $ hg init shelve_on_new_branch_conflict
   $ cd shelve_on_new_branch_conflict
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "ccc" >> a
   $ hg status
   M a
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ echo "aaabbbccc" > a
   $ rm a.orig
   $ hg resolve --mark a
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg continue
   marked working directory as branch test
   unshelve of 'default' complete
   $ cat a
   aaabbbccc
   $ hg status
   M a
   $ hg branch
   test
   $ hg commit -m "test-commit"
 
 When i shelve on test branch, update to default branch
 and unshelve i expect that it will not preserve previous
 test branch.
 
   $ echo "xxx" > b
   $ hg add b
   $ hg shelve
   shelved as test
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg update -r 7049e48789d7
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg unshelve
   unshelving change 'test'
   rebasing shelved changes
   $ hg status
   A b
   $ hg branch
   default
   $ cd ..
 
 When i unshelve resulting in merge conflicts and makes saved
 file shelvedstate looks like in previous versions in
 mercurial(without restore branch information in 7th line) i
 expect that after resolving conflicts and successfully
 running 'shelve --continue' the branch information won't be
 restored and branch will be unchanged.
 
 shelve on new branch, conflict with previous shelvedstate
 
   $ hg init conflict
   $ cd conflict
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   default
   $ echo "ccc" >> a
   $ hg status
   M a
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
 
 Removing restore branch information from shelvedstate file(making it looks like
 in previous versions) and running unshelve --continue
 
   $ cp .hg/shelvedstate .hg/shelvedstate_old
   $ cat .hg/shelvedstate_old | grep -v 'branchtorestore' > .hg/shelvedstate
 
   $ echo "aaabbbccc" > a
   $ rm a.orig
   $ hg resolve --mark a
   (no more unresolved files)
   continue: hg unshelve --continue
 
 #if continuecommand
   $ hg continue --dry-run
   unshelve in progress, will be resumed
 #endif
 
   $ hg continue
   unshelve of 'default' complete
   $ cat a
   aaabbbccc
   $ hg status
   M a
   $ hg branch
   default
   $ cd ..
 
 On non bare shelve the branch information shouldn't be restored
 
   $ hg init bare_shelve_on_new_branch
   $ cd bare_shelve_on_new_branch
   $ echo "aaa" >> a
   $ hg commit -A -m "a"
   adding a
   $ hg branch
   default
   $ hg branch test
   marked working directory as branch test
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> a
   $ hg status
   M a
   $ hg shelve a
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch
   test
   $ hg branch default
   marked working directory as branch default
   (branches are permanent and global, did you want a bookmark?)
   $ echo "bbb" >> b
   $ hg status
   ? b
   $ hg unshelve
   unshelving change 'default'
   $ hg status
   M a
   ? b
   $ hg branch
   default
   $ cd ..
 
 Prepare unshelve with a corrupted shelvedstate
   $ hg init r1 && cd r1
   $ echo text1 > file && hg add file
   $ hg shelve
   shelved as default
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo text2 > file && hg ci -Am text1
   adding file
   $ hg unshelve
   unshelving change 'default'
   rebasing shelved changes
   merging file
   warning: conflicts while merging file! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ echo somethingsomething > .hg/shelvedstate
 
 Unshelve --continue fails with appropriate message if shelvedstate is corrupted
   $ hg continue
   abort: corrupted shelved state file
   (please run hg unshelve --abort to abort unshelve operation)
   [255]
 
 Unshelve --abort works with a corrupted shelvedstate
   $ hg abort
   abort: could not read shelved state file, your working copy may be in an unexpected state
   please update to some commit
   
   [255]
 
 Unshelve --abort fails with appropriate message if there's no unshelve in
 progress
 
 #if abortflag
   $ hg unshelve --abort
   abort: no unshelve in progress
   [20]
 #else
   $ hg abort
   aborting the merge, updating back to 9451eaa6eee3
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 #endif
   $ cd ..
 
+Test corrupt shelves (in .hg/shelved/, not .hg/shelvestate)
+  $ hg init corrupt-shelves
+  $ cd corrupt-shelves
+  $ mkdir .hg/shelved
+
+# A (corrupt) .patch file without a .hg file
+  $ touch .hg/shelved/junk1.patch
+  $ hg shelve -l
+  junk1           (* ago)     (glob)
+  $ hg unshelve
+  unshelving change 'junk1'
+  abort: shelved change 'junk1' not found
+  [255]
+  $ hg shelve -d junk1
+  $ find .hg/shelve* | sort
+  .hg/shelve-backup
+  .hg/shelve-backup/junk1.patch
+  .hg/shelved
+
+# A .hg file without a .patch file
+  $ touch .hg/shelved/junk2.hg
+  $ hg shelve -l
+  $ hg unshelve
+  abort: no shelved changes to apply!
+  [255]
+  $ hg shelve -d junk2
+  abort: shelved change 'junk2' not found
+  [255]
+  $ find .hg/shelve* | sort
+  .hg/shelve-backup
+  .hg/shelve-backup/junk1.patch
+  .hg/shelve-backup/junk2.hg
+  .hg/shelved
+
+# A file with an unexpected extension
+  $ touch .hg/shelved/junk3
+  $ hg shelve -l 2>&1 | grep ValueError
+  ValueError: * (glob)
+  $ hg unshelve 2>&1 | grep ValueError
+  ValueError: * (glob)
+  $ hg shelve -d junk3
+  abort: shelved change 'junk3' not found
+  [255]
+  $ find .hg/shelve* | sort
+  .hg/shelve-backup
+  .hg/shelve-backup/junk1.patch
+  .hg/shelve-backup/junk2.hg
+  .hg/shelved
+  .hg/shelved/junk3
+
+  $ cd ..
+
 Unshelve respects --keep even if user intervention is needed
   $ hg init unshelvekeep && cd unshelvekeep
   $ echo 1 > file && hg ci -Am 1
   adding file
   $ echo 2 >> file
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 3 >> file && hg ci -Am 13
   $ hg shelve --list
   default         (*s ago) * changes to: 1 (glob)
   $ hg unshelve --keep
   unshelving change 'default'
   rebasing shelved changes
   merging file
   warning: conflicts while merging file! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ hg resolve --mark file
   (no more unresolved files)
   continue: hg unshelve --continue
   $ hg continue
   unshelve of 'default' complete
   $ hg shelve --list
   default         (*s ago) * changes to: 1 (glob)
   $ cd ..
 
 Unshelving when there are deleted files does not crash (issue4176)
   $ hg init unshelve-deleted-file && cd unshelve-deleted-file
   $ echo a > a && echo b > b && hg ci -Am ab
   adding a
   adding b
   $ echo aa > a && hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm b
   $ hg st
   ! b
   $ hg unshelve
   unshelving change 'default'
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm a && echo b > b
   $ hg st
   ! a
   $ hg unshelve
   unshelving change 'default'
   abort: shelved change touches missing files
   (run hg status to see which files are missing)
   [255]
   $ hg st
   ! a
   $ cd ..
 
 New versions of Mercurial know how to read onld shelvedstate files
   $ hg init oldshelvedstate
   $ cd oldshelvedstate
   $ echo root > root && hg ci -Am root
   adding root
   $ echo 1 > a
   $ hg add a
   $ hg shelve --name ashelve
   shelved as ashelve
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo 2 > a
   $ hg ci -Am a
   adding a
   $ hg unshelve
   unshelving change 'ashelve'
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
 putting v1 shelvedstate file in place of a created v2
   $ cat << EOF > .hg/shelvedstate
   > 1
   > ashelve
   > 8b058dae057a5a78f393f4535d9e363dd5efac9d
   > 8b058dae057a5a78f393f4535d9e363dd5efac9d
   > 8b058dae057a5a78f393f4535d9e363dd5efac9d f543b27db2cdb41737e2e0008dc524c471da1446
   > f543b27db2cdb41737e2e0008dc524c471da1446
   > 
   > nokeep
   > :no-active-bookmark
   > EOF
   $ echo 1 > a
   $ hg resolve --mark a
   (no more unresolved files)
   continue: hg unshelve --continue
 mercurial does not crash
   $ hg continue
   unshelve of 'ashelve' complete
 
 #if phasebased
 
 Unshelve with some metadata file missing
 ----------------------------------------
 
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo 3 > a
 
 Test with the `.shelve` missing, but the changeset still in the repo (non-natural case)
 
   $ rm .hg/shelved/default.shelve
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ hg abort
   unshelve of 'default' aborted
 
 Unshelve without .shelve metadata (can happen when upgrading a repository with old shelve)
 
   $ cat .hg/shelved/default.shelve
   node=82e0cb9893247d12667017593ce1e5655860f1ac
   $ hg strip --hidden --rev 82e0cb989324 --no-backup
   $ rm .hg/shelved/default.shelve
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ cat .hg/shelved/default.shelve
   node=82e0cb9893247d12667017593ce1e5655860f1ac
   $ hg abort
   unshelve of 'default' aborted
 
 #endif
 
   $ cd ..
 
 Block merge abort when unshelve in progress(issue6160)
 ------------------------------------------------------
 
   $ hg init a
   $ cd a
   $ echo foo > a ; hg commit -qAm "initial commit"
   $ echo bar > a
   $ hg shelve
   shelved as default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ echo foobar > a
   $ hg unshelve
   unshelving change 'default'
   temporarily committing pending changes (restore with 'hg unshelve --abort')
   rebasing shelved changes
   merging a
   warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
 
   $ hg log --template '{desc|firstline}  {author}  {date|isodate} \n' -r .
   pending changes temporary commit  shelve@localhost  1970-01-01 00:00 +0000 
   $ hg merge --abort
   abort: cannot abort merge with unshelve in progress
   (use 'hg unshelve --continue' or 'hg unshelve --abort')
   [20]
 
   $ hg unshelve --abort
   unshelve of 'default' aborted
 
   $ hg log -G --template '{desc|firstline}  {author}  {date|isodate} \n' -r .
   @  initial commit  test  1970-01-01 00:00 +0000
   
   $ cd ..
 
 Demonstrate that the labels are correct in the merge conflict
 -------------------------------------------------------------
   $ hg init labels
   $ cd labels
   $ echo r0 > foo
   $ hg ci -qAm r0
   $ echo "this will be shelved" >> foo
   $ hg shelve -q
   $ echo "this is in wdir, conflicts with shelve" >> foo
   $ hg unshelve -q
   warning: conflicts while merging foo! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
   [240]
   $ cat foo
   r0
   <<<<<<< working-copy: 0b2fcf2a90e9 - shelve: pending changes temporary commit
   this is in wdir, conflicts with shelve
   =======
   this will be shelved
   >>>>>>> shelve:       9c072a2163db - shelve: changes to: r0
   $ cd ..