tests/test-commit-amend.t

test-commit-amend: exhibit an --amend weirdness

The weirdness is --amend let you replace one file with another with same data
and flags if the new file copy record differ from the one in the parent
revision. In theory, there is no problem with this kind of thing, subversion
supports it, but here we see log and status disagree. The reason is log reads
the copy record from the filelog, while status calls copies.pathcopies() which
eventually invokes some expensiveness argument to discard this case (copies.py,
_forwardcopies(), line 132). Since the next patch will side with pathcopies(),
I prefer to call this behaviour a bug.

  $ "$TESTDIR/hghave" execbit || exit 80

  $ hg init

Setup:

  $ echo a >> a
  $ hg ci -Am 'base'
  adding a

Refuse to amend public csets:

  $ hg phase -r . -p
  $ hg ci --amend
  abort: cannot amend public changesets
  [255]
  $ hg phase -r . -f -d

  $ echo a >> a
  $ hg ci -Am 'base1'

Nothing to amend:

  $ hg ci --amend
  nothing changed
  [1]

Amending changeset with changes in working dir:

  $ echo a >> a
  $ hg ci --amend -m 'amend base1'
  saved backup bundle to $TESTTMP/.hg/strip-backup/489edb5b847d-amend-backup.hg
  $ hg diff -c .
  diff -r ad120869acf0 -r 9cd25b479c51 a
  --- a/a	Thu Jan 01 00:00:00 1970 +0000
  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,3 @@
   a
  +a
  +a
  $ hg log
  changeset:   1:9cd25b479c51
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     amend base1
  
  changeset:   0:ad120869acf0
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     base
  

Add new file:

  $ echo b > b
  $ hg ci --amend -Am 'amend base1 new file'
  adding b
  saved backup bundle to $TESTTMP/.hg/strip-backup/9cd25b479c51-amend-backup.hg

Remove file that was added in amended commit:

  $ hg rm b
  $ hg ci --amend -m 'amend base1 remove new file'
  saved backup bundle to $TESTTMP/.hg/strip-backup/e2bb3ecffd2f-amend-backup.hg

  $ hg cat b
  b: no such file in rev 664a9b2d60cd
  [1]

No changes, just a different message:

  $ hg ci -v --amend -m 'no changes, new message'
  amending changeset 664a9b2d60cd
  copying changeset 664a9b2d60cd to ad120869acf0
  a
  stripping amended changeset 664a9b2d60cd
  1 changesets found
  saved backup bundle to $TESTTMP/.hg/strip-backup/664a9b2d60cd-amend-backup.hg
  1 changesets found
  adding branch
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  committed changeset 1:ea6e356ff2ad
  $ hg diff -c .
  diff -r ad120869acf0 -r ea6e356ff2ad a
  --- a/a	Thu Jan 01 00:00:00 1970 +0000
  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,3 @@
   a
  +a
  +a
  $ hg log
  changeset:   1:ea6e356ff2ad
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     no changes, new message
  
  changeset:   0:ad120869acf0
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     base
  

Disable default date on commit so when -d isn't given, the old date is preserved:

  $ echo '[defaults]' >> $HGRCPATH
  $ echo 'commit=' >> $HGRCPATH

Test -u/-d:

  $ hg ci --amend -u foo -d '1 0'
  saved backup bundle to $TESTTMP/.hg/strip-backup/ea6e356ff2ad-amend-backup.hg
  $ echo a >> a
  $ hg ci --amend -u foo -d '1 0'
  saved backup bundle to $TESTTMP/.hg/strip-backup/377b91ce8b56-amend-backup.hg
  $ hg log -r .
  changeset:   1:2c94e4a5756f
  tag:         tip
  user:        foo
  date:        Thu Jan 01 00:00:01 1970 +0000
  summary:     no changes, new message
  

Open editor with old commit message if a message isn't given otherwise:

  $ cat > editor << '__EOF__'
  > #!/bin/sh
  > cat $1
  > echo "another precious commit message" > "$1"
  > __EOF__
  $ chmod +x editor
  $ HGEDITOR="'`pwd`'"/editor hg commit --amend -v
  amending changeset 2c94e4a5756f
  copying changeset 2c94e4a5756f to ad120869acf0
  no changes, new message
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: foo
  HG: branch 'default'
  HG: changed a
  a
  stripping amended changeset 2c94e4a5756f
  1 changesets found
  saved backup bundle to $TESTTMP/.hg/strip-backup/2c94e4a5756f-amend-backup.hg
  1 changesets found
  adding branch
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  committed changeset 1:ffb49186f961

Same, but with changes in working dir (different code path):

  $ echo a >> a
  $ HGEDITOR="'`pwd`'"/editor hg commit --amend -v
  amending changeset ffb49186f961
  another precious commit message
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: foo
  HG: branch 'default'
  HG: changed a
  a
  copying changeset 27f3aacd3011 to ad120869acf0
  a
  stripping intermediate changeset 27f3aacd3011
  stripping amended changeset ffb49186f961
  2 changesets found
  saved backup bundle to $TESTTMP/.hg/strip-backup/ffb49186f961-amend-backup.hg
  1 changesets found
  adding branch
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  committed changeset 1:fb6cca43446f

  $ rm editor
  $ hg log -r .
  changeset:   1:fb6cca43446f
  tag:         tip
  user:        foo
  date:        Thu Jan 01 00:00:01 1970 +0000
  summary:     another precious commit message
  

Moving bookmarks, preserve active bookmark:

  $ hg book book1
  $ hg book book2
  $ hg ci --amend -m 'move bookmarks'
  saved backup bundle to $TESTTMP/.hg/strip-backup/fb6cca43446f-amend-backup.hg
  $ hg book
     book1                     1:0cf1c7a51bcf
   * book2                     1:0cf1c7a51bcf
  $ echo a >> a
  $ hg ci --amend -m 'move bookmarks'
  saved backup bundle to $TESTTMP/.hg/strip-backup/0cf1c7a51bcf-amend-backup.hg
  $ hg book
     book1                     1:7344472bd951
   * book2                     1:7344472bd951

  $ echo '[defaults]' >> $HGRCPATH
  $ echo "commit=-d '0 0'" >> $HGRCPATH

Moving branches:

  $ hg branch foo
  marked working directory as branch foo
  (branches are permanent and global, did you want a bookmark?)
  $ echo a >> a
  $ hg ci -m 'branch foo'
  $ hg branch default -f
  marked working directory as branch default
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci --amend -m 'back to default'
  saved backup bundle to $TESTTMP/.hg/strip-backup/1661ca36a2db-amend-backup.hg
  $ hg branches
  default                        2:f24ee5961967

Close branch:

  $ hg up -q 0
  $ echo b >> b
  $ hg branch foo
  marked working directory as branch foo
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci -Am 'fork'
  adding b
  $ echo b >> b
  $ hg ci -mb
  $ hg ci --amend --close-branch -m 'closing branch foo'
  saved backup bundle to $TESTTMP/.hg/strip-backup/c962248fa264-amend-backup.hg

Same thing, different code path:

  $ echo b >> b
  $ hg ci -m 'reopen branch'
  reopening closed branch head 4
  $ echo b >> b
  $ hg ci --amend --close-branch
  saved backup bundle to $TESTTMP/.hg/strip-backup/5e302dcc12b8-amend-backup.hg
  $ hg branches
  default                        2:f24ee5961967

Refuse to amend merges:

  $ hg up -q default
  $ hg merge foo
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci --amend
  abort: cannot amend while merging
  [255]
  $ hg ci -m 'merge'
  $ hg ci --amend
  abort: cannot amend merge changesets
  [255]

Follow copies/renames:

  $ hg mv b c
  $ hg ci -m 'b -> c'
  $ hg mv c d
  $ hg ci --amend -m 'b -> d'
  saved backup bundle to $TESTTMP/.hg/strip-backup/9c207120aa98-amend-backup.hg
  $ hg st --rev '.^' --copies d
  A d
    b
  $ hg cp d e
  $ hg ci -m 'e = d'
  $ hg cp e f
  $ hg ci --amend -m 'f = d'
  saved backup bundle to $TESTTMP/.hg/strip-backup/fda2b3b27b22-amend-backup.hg
  $ hg st --rev '.^' --copies f
  A f
    d

  $ mv f f.orig
  $ hg rm -A f
  $ hg ci -m removef
  $ hg cp a f
  $ mv f.orig f
  $ hg ci --amend -m replacef
  saved backup bundle to $TESTTMP/.hg/strip-backup/0ce2c92dc50d-amend-backup.hg
  $ hg st --change . --copies
  M f
  $ hg log -r . --template "{file_copies}\n"
  f (a)

Can't rollback an amend:

  $ hg rollback
  no rollback information available
  [1]