annotate tests/test-shelve.t @ 52176:72bc29f01570

revlog: add glue to use a pure-Rust VFS

This will save us a lot of calling back into Python, which is always
horribly expensive.

We are now faster in all benchmarked cases except for `log --patch`
specifically on mozilla-try. Fixing this will happen in a later patch.

```
### data-env-vars.name            = mercurial-devel-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.cat
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.files      = all-root
  # benchmark.variants.output     = plain
  # benchmark.variants.rev        = tip
e679697a6ca4: 1.760765  ~~~~~
5559d7e63ec3: 1.555513  (-11.66%, -0.21)
### data-env-vars.name            = mozilla-try-2024-03-26-ds2-pnm
  # benchmark.name                = hg.command.cat
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.files      = all-root
  # benchmark.variants.output     = plain
  # benchmark.variants.rev        = tip
e679697a6ca4: 62.848869  ~~~~~
5559d7e63ec3: 58.113051   (-7.54%, -4.74)
### data-env-vars.name            = mozilla-try-2024-03-26-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 10
  # benchmark.variants.patch      = yes
  # benchmark.variants.rev        = none
e679697a6ca4: 3.173532  ~~~~~
5559d7e63ec3: 3.543591  (+11.66%, +0.37)
### data-env-vars.name            = mozilla-try-2024-03-26-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 1000
  # benchmark.variants.patch      = no
  # benchmark.variants.rev        = none
e679697a6ca4: 1.214698  ~~~~~
5559d7e63ec3: 1.192478   (-1.83%, -0.02)
### data-env-vars.name            = mozilla-unified-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.cat
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.files      = all-root
  # benchmark.variants.output     = plain
  # benchmark.variants.rev        = tip
e679697a6ca4: 56.205474  ~~~~~
5559d7e63ec3: 51.520074   (-8.34%, -4.69)
### data-env-vars.name            = mozilla-unified-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 10
  # benchmark.variants.patch      = yes
  # benchmark.variants.rev        = none
e679697a6ca4: 2.105419  ~~~~~
5559d7e63ec3: 2.051849   (-2.54%, -0.05)
### data-env-vars.name            = mozilla-unified-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 1000
  # benchmark.variants.patch      = no
  # benchmark.variants.rev        = none
e679697a6ca4: 0.309960  ~~~~~
5559d7e63ec3: 0.299035   (-3.52%, -0.01)
### data-env-vars.name            = tryton-public-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.cat
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.files      = all-root
  # benchmark.variants.output     = plain
  # benchmark.variants.rev        = tip
e679697a6ca4: 1.849832  ~~~~~
5559d7e63ec3: 1.805076   (-2.42%, -0.04)
### data-env-vars.name            = tryton-public-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 10
  # benchmark.variants.patch      = yes
  # benchmark.variants.rev        = none
e679697a6ca4: 0.289521  ~~~~~
5559d7e63ec3: 0.279889   (-3.33%, -0.01)
### data-env-vars.name            = tryton-public-2024-03-22-ds2-pnm
  # benchmark.name                = hg.command.log
  # bin-env-vars.hg.flavor        = rust
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.limit-rev  = 1000
  # benchmark.variants.patch      = no
  # benchmark.variants.rev        = none
e679697a6ca4: 0.332270  ~~~~~
5559d7e63ec3: 0.323324   (-2.69%, -0.01)
```

#testcases stripbased phasebased
#testcases dirstate-v1 dirstate-v2

#if dirstate-v2
  $ cat >> $HGRCPATH << EOF
  > [format]
  > use-dirstate-v2=1
  > [storage]
  > dirstate-v2.slow-path=allow
  > EOF
#endif

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > mq =
  > [defaults]
  > diff = --nodates --git
  > qnew = --date '0 0'
  > [shelve]
  > maxbackups = 2
  > EOF

#if phasebased

  $ cat <<EOF >> $HGRCPATH
  > [format]
  > use-internal-phase = yes
  > EOF

#endif

  $ hg init repo
  $ cd repo
  $ mkdir a b
  $ echo a > a/a
  $ echo b > b/b
  $ echo c > c
  $ echo d > d
  $ echo x > x
  $ hg addremove -q

shelve has a help message
  $ hg shelve -h
  hg shelve [OPTION]... [FILE]...
  
  save and set aside changes from the working directory
  
  Shelving takes files that "hg status" reports as not clean, saves the
  modifications to a bundle (a shelved change), and reverts the files so that
  their state in the working directory becomes clean.
  
  To restore these changes to the working directory, using "hg unshelve"; this
  will work even if you switch to a different commit.
  
  When no files are specified, "hg shelve" saves all not-clean files. If
  specific files or directories are named, only changes to those files are
  shelved.
  
  In bare shelve (when no files are specified, without interactive, include and
  exclude option), shelving remembers information if the working directory was
  on newly created branch, in other words working directory was on different
  branch than its first parent. In this situation unshelving restores branch
  information to the working directory.
  
  Each shelved change has a name that makes it easier to find later. The name of
  a shelved change defaults to being based on the active bookmark, or if there
  is no active bookmark, the current named branch.  To specify a different name,
  use "--name".
  
  To see a list of existing shelved changes, use the "--list" option. For each
  shelved change, this will print its name, age, and description; use "--patch"
  or "--stat" for more details.
  
  To delete specific shelved changes, use "--delete". To delete all shelved
  changes, use "--cleanup".
  
  options ([+] can be repeated):
  
   -A --addremove           mark new/missing files as added/removed before
                            shelving
   -u --unknown             store unknown files in the shelve
      --cleanup             delete all shelved changes
      --date DATE           shelve with the specified commit date
   -d --delete              delete the named shelved change(s)
   -e --edit                invoke editor on commit messages
   -k --keep                shelve, but keep changes in the working directory
   -l --list                list current shelves
   -m --message TEXT        use text as shelve message
   -n --name NAME           use the given name for the shelved commit
   -p --patch               output patches for changes (provide the names of the
                            shelved changes as positional arguments)
   -i --interactive         interactive mode
      --stat                output diffstat-style summary of changes (provide
                            the names of the shelved changes as positional
                            arguments)
   -I --include PATTERN [+] include names matching the given patterns
   -X --exclude PATTERN [+] exclude names matching the given patterns
      --mq                  operate on patch repository
  
  (some details hidden, use --verbose to show complete help)

shelving in an empty repo should be possible
(this tests also that editor is not invoked, if '--edit' is not
specified)

  $ HGEDITOR=cat hg shelve
  shelved as default
  0 files updated, 0 files merged, 5 files removed, 0 files unresolved

  $ hg unshelve
  unshelving change 'default'

  $ hg commit -q -m 'initial commit'

  $ hg shelve
  nothing changed
  [1]

make sure shelve files were backed up

  $ ls .hg/shelve-backup
  default.hg
  default.patch
  default.shelve

checks to make sure we dont create a directory or
hidden file while choosing a new shelve name

when we are given a name

  $ hg shelve -n foo/bar
  abort: shelved change names can not contain slashes
  [255]
  $ hg shelve -n .baz
  abort: shelved change names can not start with '.'
  [255]
  $ hg shelve -n foo\\bar
  abort: shelved change names can not contain slashes
  [255]

when shelve has to choose itself

  $ hg branch x/y -q
  $ hg commit -q -m "Branch commit 0"
  $ hg shelve
  nothing changed
  [1]
  $ hg branch .x -q
  $ hg commit -q -m "Branch commit 1"
  $ hg shelve
  nothing changed
  [1]
  $ hg branch x\\y -q
  $ hg commit -q -m "Branch commit 2"
  $ hg shelve
  nothing changed
  [1]

cleaning the branches made for name checking tests

  $ hg up default -q
  $ hg strip e9177275307e+6a6d231f43d+882bae7c62c2 -q

create an mq patch - shelving should work fine with a patch applied

  $ echo n > n
  $ hg add n
  $ hg commit n -m second
  $ hg qnew second.patch

shelve a change that we will delete later

  $ echo a >> a/a
  $ hg shelve
  shelved as default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

set up some more complex changes to shelve

  $ echo a >> a/a
  $ hg mv b b.rename
  moving b/b to b.rename/b
  $ hg cp c c.copy
  $ hg mv d ghost
  $ rm ghost
  $ hg status -C
  M a/a
  A b.rename/b
    b/b
  A c.copy
    c
  R b/b
  R d
  ! ghost
    d

the common case - no options or filenames

  $ hg shelve
  shelved as default-01
  3 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg status -C

ensure that our shelved changes exist

  $ hg shelve -l
  default-01      (*)* changes to: [mq]: second.patch (glob)
  default         (*)* changes to: [mq]: second.patch (glob)

  $ hg shelve -l -p default
  default         (*)* changes to: [mq]: second.patch (glob)
  
  diff --git a/a/a b/a/a
  --- a/a/a
  +++ b/a/a
  @@ -1,1 +1,2 @@
   a
  +a

  $ hg shelve --list --addremove
  abort: options '--list' and '--addremove' may not be used together
  [10]

delete our older shelved change

  $ hg shelve -d default
  $ hg qfinish -a -q

ensure shelve backups aren't overwritten

  $ ls .hg/shelve-backup/
  default-1.hg
  default-1.patch
  default-1.shelve
  default.hg
  default.patch
  default.shelve

local edits should not prevent a shelved change from applying

  $ printf "z\na\n" > a/a
  $ hg unshelve --keep
  unshelving change 'default-01'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  merging a/a

  $ hg revert --all -q
  $ rm a/a.orig b.rename/b c.copy

apply it and make sure our state is as expected

(this also tests that same timestamp prevents backups from being
removed, even though there are more than 'maxbackups' backups)

  $ f -t .hg/shelve-backup/default.shelve
  .hg/shelve-backup/default.shelve: file
  $ touch -t 200001010000 .hg/shelve-backup/default.shelve
  $ f -t .hg/shelve-backup/default-1.shelve
  .hg/shelve-backup/default-1.shelve: file
  $ touch -t 200001010000 .hg/shelve-backup/default-1.shelve

  $ hg unshelve
  unshelving change 'default-01'
  $ hg status -C
  M a/a
  A b.rename/b
    b/b
  A c.copy
    c
  R b/b
  R d
  $ hg shelve -l

(both of default.hg and default-1.hg should be still kept, because it
is difficult to decide actual order of them from same timestamp)

  $ ls .hg/shelve-backup/
  default-01.hg
  default-01.patch
  default-01.shelve
  default-1.hg
  default-1.patch
  default-1.shelve
  default.hg
  default.patch
  default.shelve

  $ hg unshelve
  abort: no shelved changes to apply!
  [20]
  $ hg unshelve foo
  abort: shelved change 'foo' not found
  [10]

named shelves, specific filenames, and "commit messages" should all work
(this tests also that editor is invoked, if '--edit' is specified)

  $ hg status -C
  M a/a
  A b.rename/b
    b/b
  A c.copy
    c
  R b/b
  R d
  $ HGEDITOR=cat hg shelve -q -n wibble -m wat -e a
  wat
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: shelve@localhost
  HG: branch 'default'
  HG: changed a/a

expect "a" to no longer be present, but status otherwise unchanged

  $ hg status -C
  A b.rename/b
    b/b
  A c.copy
    c
  R b/b
  R d
  $ hg shelve -l --stat
  wibble +\([^)]+\) +wat (re)
   a/a |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)

and now "a/a" should reappear

  $ cd a
  $ hg unshelve -q wibble
  $ cd ..
  $ hg status -C
  M a/a
  A b.rename/b
    b/b
  A c.copy
    c
  R b/b
  R d

ensure old shelve backups are being deleted automatically

  $ ls .hg/shelve-backup/
  default-01.hg
  default-01.patch
  default-01.shelve
  wibble.hg
  wibble.patch
  wibble.shelve

cause unshelving to result in a merge with 'a' conflicting

  $ hg shelve -q
  $ echo c>>a/a
  $ hg commit -m second
  $ hg tip --template '{files}\n'
  a/a

add an unrelated change that should be preserved

  $ mkdir foo
  $ echo foo > foo/foo
  $ hg add foo/foo

force a conflicted merge to occur

  $ hg unshelve
  unshelving change 'default'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  merging a/a
  warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
  unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
  [240]
  $ hg status -v
  M a/a
  M b.rename/b
  M c.copy
  R b/b
  R d
  ? a/a.orig
  # The repository is in an unfinished *unshelve* state.
  
  # Unresolved merge conflicts:
  # 
  #     a/a
  # 
  # To mark files as resolved:  hg resolve --mark FILE
  
  # To continue:    hg unshelve --continue
  # To abort:       hg unshelve --abort
  

ensure that we have a merge with unresolved conflicts

#if phasebased
  $ hg heads -q --template '{rev}\n'
  8
  5
  $ hg parents -q --template '{rev}\n'
  8
  5
#endif

#if stripbased
  $ hg heads -q --template '{rev}\n'
  5
  4
  $ hg parents -q --template '{rev}\n'
  4
  5
#endif

  $ hg status
  M a/a
  M b.rename/b
  M c.copy
  R b/b
  R d
  ? a/a.orig
  $ hg diff
  diff --git a/a/a b/a/a
  --- a/a/a
  +++ b/a/a
  @@ -1,2 +1,6 @@
   a
  +<<<<<<< working-copy:   2377350b6337 - shelve: pending changes temporary commit
   c
  +=======
  +a
  +>>>>>>> shelved change: 203c9f771d2b - shelve: changes to: [mq]: second.patch
  diff --git a/b/b b/b.rename/b
  rename from b/b
  rename to b.rename/b
  diff --git a/c b/c.copy
  copy from c
  copy to c.copy
  diff --git a/d b/d
  deleted file mode 100644
  --- a/d
  +++ /dev/null
  @@ -1,1 +0,0 @@
  -d
  $ hg resolve -l
  U a/a

  $ hg shelve
  abort: unshelve already in progress
  (use 'hg unshelve --continue' or 'hg unshelve --abort')
  [20]

abort the unshelve and be happy

  $ hg status
  M a/a
  M b.rename/b
  M c.copy
  R b/b
  R d
  ? a/a.orig
  $ hg unshelve -a
  unshelve of 'default' aborted
  $ hg heads -q
  [37]:2e69b451d1ea (re)
  $ hg parents
  changeset:   [37]:2e69b451d1ea (re)
  tag:         tip
  parent:      3:509104101065 (?)
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     second
  
  $ hg resolve -l
  $ hg status
  A foo/foo
  ? a/a.orig

try to continue with no unshelve underway

  $ hg unshelve -c
  abort: no unshelve in progress
  [20]
  $ hg status
  A foo/foo
  ? a/a.orig

redo the unshelve to get a conflict

  $ hg unshelve -q
  warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
  unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
  [240]

attempt to continue

  $ hg unshelve -c
  abort: unresolved conflicts, can't continue
  (see 'hg resolve', then 'hg unshelve --continue')
  [255]

  $ hg revert -r . a/a
  $ hg resolve -m a/a
  (no more unresolved files)
  continue: hg unshelve --continue

  $ hg commit -m 'commit while unshelve in progress'
  abort: unshelve already in progress
  (use 'hg unshelve --continue' or 'hg unshelve --abort')
  [20]

  $ hg graft --continue
  abort: no graft in progress
  (continue: hg unshelve --continue)
  [20]
  $ hg unshelve -c
  unshelve of 'default' complete

ensure the repo is as we hope

  $ hg parents
  changeset:   [37]:2e69b451d1ea (re)
  tag:         tip
  parent:      3:509104101065 (?)
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     second
  
  $ hg heads -q
  [37]:2e69b451d1ea (re)

  $ hg status -C
  A b.rename/b
    b/b
  A c.copy
    c
  A foo/foo
  R b/b
  R d
  ? a/a.orig

there should be no shelves left

  $ hg shelve -l

#if execbit

ensure that metadata-only changes are shelved

  $ chmod +x a/a
  $ hg shelve -q -n execbit a/a
  $ hg status a/a
  $ hg unshelve -q execbit
  $ hg status a/a
  M a/a
  $ hg revert a/a

#else

Dummy shelve op, to keep rev numbers aligned

  $ echo foo > a/a
  $ hg shelve -q -n dummy a/a
  $ hg unshelve -q dummy
  $ hg revert a/a

#endif

#if symlink

  $ rm a/a
  $ ln -s foo a/a
  $ hg shelve -q -n symlink a/a
  $ hg status a/a
  $ hg unshelve -q -n symlink
  $ hg status a/a
  M a/a
  $ hg revert a/a

#else

Dummy shelve op, to keep rev numbers aligned

  $ echo bar > a/a
  $ hg shelve -q -n dummy a/a
  $ hg unshelve -q dummy
  $ hg revert a/a

#endif

set up another conflict between a commit and a shelved change

  $ hg revert -q -C -a
  $ rm a/a.orig b.rename/b c.copy
  $ echo a >> a/a
  $ hg shelve -q
  $ echo x >> a/a
  $ hg ci -m 'create conflict'
  $ hg add foo/foo

if we resolve a conflict while unshelving, the unshelve should succeed

  $ hg unshelve --tool :merge-other --keep
  unshelving change 'default'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  merging a/a
  $ hg parents -q
  (4|13):33f7f61e6c5e (re)
  $ hg shelve -l
  default         (*)* changes to: second (glob)
  $ hg status
  M a/a
  A foo/foo
  $ cat a/a
  a
  c
  a
  $ cat > a/a << EOF
  > a
  > c
  > x
  > EOF

  $ HGMERGE=true hg unshelve
  unshelving change 'default'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  merging a/a
  note: unshelved changes already existed in the working copy
  $ hg parents -q
  (4|13):33f7f61e6c5e (re)
  $ hg shelve -l
  $ hg status
  A foo/foo
  $ cat a/a
  a
  c
  x

test keep and cleanup

  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg shelve --list
  default         (*)* changes to: create conflict (glob)
  $ hg unshelve -k
  unshelving change 'default'
  $ hg shelve --list
  default         (*)* changes to: create conflict (glob)
  $ hg shelve --cleanup
  $ hg shelve --list

  $ hg shelve --cleanup --delete
  abort: options '--cleanup' and '--delete' may not be used together
  [10]
  $ hg shelve --cleanup --patch
  abort: options '--cleanup' and '--patch' may not be used together
  [10]
  $ hg shelve --cleanup --message MESSAGE
  abort: options '--cleanup' and '--message' may not be used together
  [10]

test bookmarks

  $ hg bookmark test
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ hg shelve
  shelved as test
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ hg unshelve
  unshelving change 'test'
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)

shelve should still work even if mq is disabled

  $ hg --config extensions.mq=! shelve
  shelved as test
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg --config extensions.mq=! shelve --list
  test            (*)* changes to: create conflict (glob)
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ hg --config extensions.mq=! unshelve
  unshelving change 'test'
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)

Recreate some conflict again

  $ hg up -C -r 2e69b451d1ea
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (leaving bookmark test)
  $ echo y >> a/a
  $ hg shelve
  shelved as default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg up test
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (activating bookmark test)
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ hg unshelve
  unshelving change 'default'
  rebasing shelved changes
  merging a/a
  warning: conflicts while merging a/a! (edit, then use 'hg resolve --mark')
  unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
  [240]
  $ hg bookmark
     test                      (4|13):33f7f61e6c5e (re)

Test that resolving all conflicts in one direction (so that the rebase
is a no-op), works (issue4398)

  $ hg revert -a -r .
  reverting a/a
  $ hg resolve -m a/a
  (no more unresolved files)
  continue: hg unshelve --continue
  $ hg unshelve -c
  note: unshelved changes already existed in the working copy
  unshelve of 'default' complete
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ hg diff
  $ hg status
  ? a/a.orig
  ? foo/foo
  $ hg summary
  parent: (4|13):33f7f61e6c5e tip (re)
   create conflict
  branch: default
  bookmarks: *test
  commit: 2 unknown (clean)
  update: (current)
  phases: 5 draft

  $ hg shelve --delete --stat
  abort: options '--delete' and '--stat' may not be used together
  [10]
  $ hg shelve --delete --name NAME
  abort: options '--delete' and '--name' may not be used together
  [10]

Test interactive shelve
  $ cat <<EOF >> $HGRCPATH
  > [ui]
  > interactive = true
  > EOF
  $ echo 'a' >> a/b
  $ cat a/a >> a/b
  $ echo 'x' >> a/b
  $ mv a/b a/a
  $ echo 'a' >> foo/foo
  $ hg st
  M a/a
  ? a/a.orig
  ? foo/foo
  $ cat a/a
  a
  a
  c
  x
  x
  $ cat foo/foo
  foo
  a
  $ hg shelve --interactive --config ui.interactive=false
  abort: running non-interactively
  [10]
  $ hg shelve --interactive << EOF
  > y
  > y
  > n
  > EOF
  diff --git a/a/a b/a/a
  2 hunks, 2 lines changed
  examine changes to 'a/a'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,3 +1,4 @@
  +a
   a
   c
   x
  record change 1/2 to 'a/a'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,3 +2,4 @@
   a
   c
   x
  +x
  record change 2/2 to 'a/a'?
  (enter ? for help) [Ynesfdaq?] n
  
  shelved as test
  merging a/a
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  $ cat a/a
  a
  c
  x
  x
  $ cat foo/foo
  foo
  a
  $ hg st
  M a/a
  ? foo/foo
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
there shouldn't be a merge state
  $ hg resolve -l
  $ hg unshelve
  unshelving change 'test'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  merging a/a
  $ hg bookmark
   \* test                      (4|13):33f7f61e6c5e (re)
  $ cat a/a
  a
  a
  c
  x
  x

shelve --patch and shelve --stat should work with valid shelfnames

  $ hg up --clean .
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (leaving bookmark test)
  $ hg shelve --list
  $ echo 'patch a' > shelf-patch-a
  $ hg add shelf-patch-a
  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo 'patch b' > shelf-patch-b
  $ hg add shelf-patch-b
  $ hg shelve
  shelved as default-01
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg shelve --patch default default-01
  default-01      (*)* changes to: create conflict (glob)
  
  diff --git a/shelf-patch-b b/shelf-patch-b
  new file mode 100644
  --- /dev/null
  +++ b/shelf-patch-b
  @@ -0,0 +1,1 @@
  +patch b
  default         (*)* changes to: create conflict (glob)
  
  diff --git a/shelf-patch-a b/shelf-patch-a
  new file mode 100644
  --- /dev/null
  +++ b/shelf-patch-a
  @@ -0,0 +1,1 @@
  +patch a
  $ hg shelve --stat default default-01
  default-01      (*)* changes to: create conflict (glob)
   shelf-patch-b |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  default         (*)* changes to: create conflict (glob)
   shelf-patch-a |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  $ hg shelve --patch default
  default         (*)* changes to: create conflict (glob)
  
  diff --git a/shelf-patch-a b/shelf-patch-a
  new file mode 100644
  --- /dev/null
  +++ b/shelf-patch-a
  @@ -0,0 +1,1 @@
  +patch a
  $ hg shelve --stat default
  default         (*)* changes to: create conflict (glob)
   shelf-patch-a |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  $ hg shelve --patch nonexistentshelf
  abort: cannot find shelf nonexistentshelf
  [255]
  $ hg shelve --stat nonexistentshelf
  abort: cannot find shelf nonexistentshelf
  [255]
  $ hg shelve --patch default nonexistentshelf
  abort: cannot find shelf nonexistentshelf
  [255]

when the user asks for a patch, we assume they want the most recent shelve if
they don't provide a shelve name

  $ hg shelve --patch
  default-01      (*)* changes to: create conflict (glob)
  
  diff --git a/shelf-patch-b b/shelf-patch-b
  new file mode 100644
  --- /dev/null
  +++ b/shelf-patch-b
  @@ -0,0 +1,1 @@
  +patch b

  $ cd ..

Shelve from general delta repo uses bundle2 on disk
--------------------------------------------------

no general delta

  $ hg clone --pull repo bundle1 --config format.usegeneraldelta=0
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 8 changes to 6 files
  new changesets cc01e2b0c59f:33f7f61e6c5e
  updating to branch default
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd bundle1
  $ echo babar > jungle
  $ hg add jungle
  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg debugbundle .hg/shelved/*.hg
  330882a04d2ce8487636b1fb292e5beea77fa1e3
  $ cd ..

with general delta

  $ hg clone --pull repo bundle2 --config format.usegeneraldelta=1
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 8 changes to 6 files
  new changesets cc01e2b0c59f:33f7f61e6c5e
  updating to branch default
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd bundle2
  $ echo babar > jungle
  $ hg add jungle
  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg debugbundle .hg/shelved/*.hg
  Stream params: {Compression: BZ}
  changegroup -- {nbchanges: 1, version: 02} (mandatory: True)
      330882a04d2ce8487636b1fb292e5beea77fa1e3

Test shelve --keep

  $ hg unshelve
  unshelving change 'default'
  $ hg shelve --keep --list
  abort: options '--list' and '--keep' may not be used together
  [10]
  $ hg shelve --keep --patch
  abort: options '--patch' and '--keep' may not be used together
  [10]
  $ hg shelve --keep --delete
  abort: options '--delete' and '--keep' may not be used together
  [10]
  $ hg shelve --keep
  shelved as default
  $ hg diff
  diff --git a/jungle b/jungle
  new file mode 100644
  --- /dev/null
  +++ b/jungle
  @@ -0,0 +1,1 @@
  +babar

Test shelve --delete

  $ hg shelve --list
  default         (*s ago) * changes to: create conflict (glob)
  $ hg shelve --delete doesnotexist
  abort: shelved change 'doesnotexist' not found
  [10]
  $ hg shelve --delete default

  $ cd ..

Test visibility of in-memory changes inside transaction to external hook
------------------------------------------------------------------------

  $ cd repo

  $ echo xxxx >> x
  $ hg commit -m "#5: changes to invoke rebase"

  $ cat > $TESTTMP/checkvisibility.sh <<EOF
  > echo "==== \$1:"
  > hg parents --template "VISIBLE {rev}:{node|short}\n"
  > # test that pending changes are hidden
  > unset HG_PENDING
  > hg parents --template "ACTUAL  {rev}:{node|short}\n"
  > echo "===="
  > EOF

  $ cat >> .hg/hgrc <<EOF
  > [defaults]
  > # to fix hash id of temporary revisions
  > unshelve = --date '0 0'
  > EOF

"hg unshelve" at REV5 implies steps below:

(1) commit changes in the working directory (REV6)
(2) unbundle shelved revision (REV7)
(3) rebase: merge REV7 into REV6 (REV6 => REV6, REV7)
(4) rebase: commit merged revision (REV8)
(5) rebase: update to REV6 (REV8 => REV6)
(6) update to REV5 (REV6 => REV5)
(7) abort transaction

== test visibility to external preupdate hook

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > preupdate.visibility = sh $TESTTMP/checkvisibility.sh preupdate
  > EOF

  $ echo nnnn >> n

  $ sh $TESTTMP/checkvisibility.sh before-unshelving
  ==== before-unshelving:
  VISIBLE (5|19):703117a2acfb (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

  $ hg unshelve --keep default
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  ==== preupdate:
  VISIBLE (6|20):54c00d20fb3f (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====
  ==== preupdate:
  VISIBLE (8|21):8efe6f7537dc (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====
  ==== preupdate:
  VISIBLE (6|20):54c00d20fb3f (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > preupdate.visibility =
  > EOF

  $ sh $TESTTMP/checkvisibility.sh after-unshelving
  ==== after-unshelving:
  VISIBLE (5|19):703117a2acfb (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

== test visibility to external update hook

  $ hg update -q -C 703117a2acfb

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > update.visibility = sh $TESTTMP/checkvisibility.sh update
  > EOF

  $ echo nnnn >> n

  $ sh $TESTTMP/checkvisibility.sh before-unshelving
  ==== before-unshelving:
  VISIBLE (5|19):703117a2acfb (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

  $ hg unshelve --keep default
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  ==== update:
  VISIBLE (6|20):54c00d20fb3f (re)
  VISIBLE 1?7:492ed9d705e5 (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====
  ==== update:
  VISIBLE (6|20):54c00d20fb3f (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====
  ==== update:
  VISIBLE (5|19):703117a2acfb (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > update.visibility =
  > EOF

  $ sh $TESTTMP/checkvisibility.sh after-unshelving
  ==== after-unshelving:
  VISIBLE (5|19):703117a2acfb (re)
  ACTUAL  (5|19):703117a2acfb (re)
  ====

  $ cd ..

Keep active bookmark while (un)shelving even on shared repo (issue4940)
-----------------------------------------------------------------------

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > share =
  > EOF

  $ hg bookmarks -R repo
     test                      (4|13):33f7f61e6c5e (re)
  $ hg share -B repo share
  updating working directory
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd share

  $ hg bookmarks
     test                      (4|13):33f7f61e6c5e (re)
  $ hg bookmarks foo
  $ hg bookmarks
   \* foo                       (5|19):703117a2acfb (re)
     test                      (4|13):33f7f61e6c5e (re)
  $ echo x >> x
  $ hg shelve
  shelved as foo
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg bookmarks
   \* foo                       (5|19):703117a2acfb (re)
     test                      (4|13):33f7f61e6c5e (re)

  $ hg unshelve
  unshelving change 'foo'
  $ hg bookmarks
   \* foo                       (5|19):703117a2acfb (re)
     test                      (4|13):33f7f61e6c5e (re)

  $ cd ..

Abort unshelve while merging (issue5123)
----------------------------------------

  $ hg init issue5123
  $ cd issue5123
  $ echo > a
  $ hg ci -Am a
  adding a
  $ hg co null
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo > b
  $ hg ci -Am b
  adding b
  created new head
  $ echo > c
  $ hg add c
  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg co 1
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
-- successful merge with two parents
  $ hg log -G
  @  changeset:   1:406bf70c274f
     tag:         tip
     parent:      -1:000000000000
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     b
  
  @  changeset:   0:ada8c9eb8252
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     a
  
-- trying to pull in the shelve bits
-- unshelve should abort otherwise, it'll eat my second parent.
  $ hg unshelve
  abort: outstanding uncommitted merge
  (use 'hg commit' or 'hg merge --abort')
  [20]

  $ cd ..

-- test for interactive mode on unshelve

  $ hg init a
  $ cd a
  $ echo > b
  $ hg ci -Am b
  adding b
  $ echo > c
  $ echo > d
  $ hg add .
  adding c
  adding d
  $ hg shelve
  shelved as default
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo > e
  $ hg add e
  $ hg ci -m e
  $ hg shelve --patch
  default         (*s ago) * changes to: b (glob)
  
  diff --git a/c b/c
  new file mode 100644
  --- /dev/null
  +++ b/c
  @@ -0,0 +1,1 @@
  +
  diff --git a/d b/d
  new file mode 100644
  --- /dev/null
  +++ b/d
  @@ -0,0 +1,1 @@
  +
  $ hg unshelve -i <<EOF
  > y
  > y
  > y
  > n
  > EOF
  unshelving change 'default'
  rebasing shelved changes
  diff --git a/c b/c
  new file mode 100644
  examine changes to 'c'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +
  record change 1/2 to 'c'?
  (enter ? for help) [Ynesfdaq?] y
  
  diff --git a/d b/d
  new file mode 100644
  examine changes to 'd'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +
  record change 2/2 to 'd'?
  (enter ? for help) [Ynesfdaq?] n
  
  $ ls -A
  .hg
  b
  c
  e
-- shelve should not contain `c` now
  $ hg shelve --patch
  default         (*s ago) * changes to: b (glob)
  
  diff --git a/d b/d
  new file mode 100644
  --- /dev/null
  +++ b/d
  @@ -0,0 +1,1 @@
  +
  $ hg unshelve -i <<EOF
  > y
  > y
  > EOF
  unshelving change 'default'
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  diff --git a/d b/d
  new file mode 100644
  examine changes to 'd'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +
  record this change to 'd'?
  (enter ? for help) [Ynesfdaq?] y
  

  $ hg status -v
  A c
  A d
  $ ls -A
  .hg
  b
  c
  d
  e
  $ hg shelve --list

-- now, unshelve selected changes from a file

  $ echo B > foo
  $ hg add foo
  $ hg ci -m 'add B to foo'
  $ cat > foo <<EOF
  > A
  > B
  > C
  > EOF
  $ echo > garbage
  $ hg st
  M foo
  ? garbage
  $ hg shelve --unknown
  shelved as default
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ cat foo
  B
  $ hg unshelve -i <<EOF
  > y
  > y
  > n
  > y
  > y
  > EOF
  unshelving change 'default'
  rebasing shelved changes
  diff --git a/foo b/foo
  2 hunks, 2 lines changed
  examine changes to 'foo'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,1 +1,2 @@
  +A
   B
  record change 1/3 to 'foo'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,1 +2,2 @@
   B
  +C
  record change 2/3 to 'foo'?
  (enter ? for help) [Ynesfdaq?] n
  
  diff --git a/garbage b/garbage
  new file mode 100644
  examine changes to 'garbage'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -0,0 +1,1 @@
  +
  record change 3/3 to 'garbage'?
  (enter ? for help) [Ynesfdaq?] y
  
  $ hg st
  M foo
  ? garbage
  $ cat foo
  A
  B
  $ hg shelve --patch
  default         (*s ago) * changes to: add B to foo (glob)
  
  diff --git a/foo b/foo
  --- a/foo
  +++ b/foo
  @@ -1,2 +1,3 @@
   A
   B
  +C

-- unshelve interactive on conflicts

  $ echo A >> bar1
  $ echo A >> bar2
  $ hg add bar1 bar2
  $ hg ci -m 'add A to bars'
  $ echo B >> bar1
  $ echo B >> bar2
  $ hg shelve
  shelved as default-01
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo C >> bar1
  $ echo C >> bar2
  $ hg ci -m 'add C to bars'
  $ hg unshelve -i
  unshelving change 'default-01'
  rebasing shelved changes
  merging bar1
  warning: conflicts while merging bar1! (edit, then use 'hg resolve --mark')
  merging bar2
  warning: conflicts while merging bar2! (edit, then use 'hg resolve --mark')
  unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
  [240]

  $ cat > bar1 <<EOF
  > A
  > B
  > C
  > EOF
  $ cat > bar2 <<EOF
  > A
  > B
  > C
  > EOF
  $ hg resolve -m bar1 bar2
  (no more unresolved files)
  continue: hg unshelve --continue

-- using --continue with --interactive should throw an error
  $ hg unshelve --continue -i
  abort: cannot use both continue and interactive
  [10]

  $ cat bar1
  A
  B
  C

#if stripbased
  $ hg log -r 3:: -G
  @  changeset:   5:f1d5f53e397b
  |  tag:         tip
  |  parent:      3:e28fd7fa7938
  |  user:        shelve@localhost
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     changes to: add A to bars
  |
  | @  changeset:   4:fe451a778c81
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     add C to bars
  |
  o  changeset:   3:e28fd7fa7938
  |  user:        test
  ~  date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     add A to bars
  
#endif

  $ hg unshelve --continue <<EOF
  > y
  > y
  > y
  > n
  > EOF
  diff --git a/bar1 b/bar1
  1 hunks, 1 lines changed
  examine changes to 'bar1'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,2 +1,3 @@
   A
  +B
   C
  record change 1/2 to 'bar1'?
  (enter ? for help) [Ynesfdaq?] y
  
  diff --git a/bar2 b/bar2
  1 hunks, 1 lines changed
  examine changes to 'bar2'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,2 +1,3 @@
   A
  +B
   C
  record change 2/2 to 'bar2'?
  (enter ? for help) [Ynesfdaq?] n
  
  unshelve of 'default-01' complete

#if stripbased
  $ hg log -r 3:: -G
  @  changeset:   4:fe451a778c81
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     add C to bars
  |
  o  changeset:   3:e28fd7fa7938
  |  user:        test
  ~  date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     add A to bars
  
#endif

  $ hg unshelve --continue
  abort: no unshelve in progress
  [20]

  $ hg shelve --list
  default-01      (*)* changes to: add A to bars (glob)
  default         (*)* changes to: add B to foo (glob)
  $ hg unshelve -n default-01 -i <<EOF
  > y
  > y
  > EOF
  temporarily committing pending changes (restore with 'hg unshelve --abort')
  rebasing shelved changes
  diff --git a/bar2 b/bar2
  1 hunks, 1 lines changed
  examine changes to 'bar2'?
  (enter ? for help) [Ynesfdaq?] y
  
  @@ -1,2 +1,3 @@
   A
  +B
   C
  record this change to 'bar2'?
  (enter ? for help) [Ynesfdaq?] y
  
-- test for --interactive --keep
  $ hg unshelve -i --keep
  abort: --keep on --interactive is not yet supported
  [10]

  $ hg update -q --clean .

Test that we can successfully shelve and unshelve a file with a trailing space
in the filename. Such filenames are supposedly unsupported on Windows, so we
wrap it in the no-windows check. Also test `hg patch` of the .patch file
produced by `hg shelve`.
#if no-windows
  $ echo hi > 'my filename '
  $ hg add 'my filename '
  warning: filename ends with ' ', which is not allowed on Windows: 'my filename '
  $ hg shelve
  shelved as default-01
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ cp .hg/shelved/default-01.patch test_patch.patch
  $ hg unshelve
  unshelving change 'default-01'
  $ cat 'my filename '
  hi
  $ hg update -q --clean .
  $ hg patch -p1 test_patch.patch
  applying test_patch.patch

  $ hg strip -q -r .
#endif

Check the comment of the last commit for consistency

  $ hg log -r . --template '{desc}\n'
  add C to bars

-- if phasebased, shelve works without patch and bundle

  $ hg update -q --clean .
  $ rm -r .hg/shelve*
  $ echo import antigravity >> somefile.py
  $ hg add somefile.py
  $ hg shelve -q
#if phasebased
  $ rm .hg/shelved/default.hg
  $ rm .hg/shelved/default.patch
#endif

shelve --list --patch should work even with no patch file.

  $ hg shelve --list --patch
  default         (*s ago) * changes to: add C to bars (glob)
  
  diff --git a/somefile.py b/somefile.py
  new file mode 100644
  --- /dev/null
  +++ b/somefile.py
  @@ -0,0 +1,1 @@
  +import antigravity

  $ hg unshelve
  unshelving change 'default'

#if phasebased
  $ ls .hg/shelve-backup
  default.shelve
#endif

#if stripbased
  $ ls .hg/shelve-backup
  default.hg
  default.patch
  default.shelve
#endif


-- allow for phase-based shelves to be disabled

  $ hg update -q --clean .
  $ hg strip -q --hidden -r 0
  $ rm -r .hg/shelve*

#if phasebased
  $ cp $HGRCPATH $TESTTMP/hgrc-saved
  $ cat <<EOF >> $HGRCPATH
  > [shelve]
  > store = strip
  > EOF
#endif

  $ echo import this >> somefile.py
  $ hg add somefile.py
  $ hg shelve -q
  $ hg log --hidden
  $ ls .hg/shelved
  default.hg
  default.patch
  default.shelve
  $ hg unshelve -q

Override the disabling, re-enabling phase-based shelves

  $ hg shelve --config shelve.store=internal -q

#if phasebased
  $ hg log --hidden --template '{user}\n'
  shelve@localhost
#endif

#if stripbased
  $ hg log --hidden --template '{user}\n'
#endif

clean up

#if phasebased
  $ mv $TESTTMP/hgrc-saved $HGRCPATH
#endif

changed files should be reachable in all shelves

create an extension that emits changed files

  $ cat > shelve-changed-files.py << EOF
  > """Command to emit changed files for a shelf"""
  > 
  > from mercurial import registrar, shelve
  > 
  > cmdtable = {}
  > command = registrar.command(cmdtable)
  > 
  > 
  > @command(b'shelve-changed-files')
  > def shelve_changed_files(ui, repo, name):
  >     shelf = shelve.ShelfDir(repo).get(name)
  >     for file in shelf.changed_files(ui, repo):
  >         ui.write(file + b'\n')
  > EOF

  $ hg --config extensions.shelve-changed-files=shelve-changed-files.py shelve-changed-files default
  somefile.py