annotate tests/test-amend.t @ 3660:f018656ca3bf

amend: add a new flag `--patch` to `hg amend`

This patch adds a new flag `--patch` to `hg amend` which pops up an editor with
the patch of working directory parent which you can change, and when you exit
the editor the patch with changes is applied to current working directory with
old changeset being obsoleted in favour of new one created by the applied patch.

If supplied filenames, only those filenames are present in the popped editor and
rest files stay the same way in the commit as they were.

The extension of the file which opens up in editor is '.diff', we cannot have it
as '.patch' as there will be develwarns related to that. We need to change to
patch core and undo some change to achieve this.

The implementation does not use any core API rather it has picked chunks from
API which are required. One main reason to not use core import API is that we
have to change wdir parent before using patch.patch() which I will like to avoid
to make sure we handle merge cases too. While writing this patch I have spend
lot of time try to use internal API's to work for this but none of them served
the purpose well. If I have time in future and work on similar problem again, I
am going to write better high-level API's which uses patchstore to achieve this.

A new test file test-amend-patch.t which contains a lot of testing of the
feature.

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ glog() {
  >   hg log -G --template '{rev}@{branch}({phase}) {desc|firstline}\n' "$@"
  > }

  $ hg init repo --traceback
  $ cd repo
  $ echo a > a
  $ hg ci -Am adda
  adding a

Test that amend captures branches

  $ hg branch foo
  marked working directory as branch foo
  (branches are permanent and global, did you want a bookmark?)
  $ hg amend -d '0 0' -n "this a note on the obsmarker and supported for hg>=4.4"
  $ hg debugobsolete
  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 (*) {'ef1': '*', 'user': 'test'} (glob)
  $ hg obslog
  @  6a022cbb61d5 (1) adda
  |
  x  07f494440405 (0) adda
       rewritten(branch) as 6a022cbb61d5 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
         note: this a note on the obsmarker and supported for hg>=4.4
  
  $ hg branch
  foo
  $ hg branches
  foo                            1:6a022cbb61d5
  $ glog
  @  1@foo(draft) adda
  
Test no-op

  $ hg amend -d '0 0'
  nothing changed
  [1]
  $ glog
  @  1@foo(draft) adda
  

Test forcing the message to the same value, no intermediate revision.

  $ hg amend -d '0 0' -m 'adda'
  nothing changed
  [1]
  $ glog
  @  1@foo(draft) adda
  

Test collapsing into an existing revision, no intermediate revision.

  $ echo a >> a
  $ hg ci -m changea
  $ echo a > a
  $ hg status
  M a
  $ hg pstatus
  $ hg diff
  diff -r f7a50201fe3a a
  --- a/a	Thu Jan 01 00:00:00 1970 +0000
  +++ b/a	* +0000 (glob)
  @@ -1,2 +1,1 @@
   a
  -a
  $ hg pdiff
  $ hg ci -m reseta
  $ hg debugobsolete
  07f4944404050f47db2e5c5071e0e84e7a27bba9 6a022cbb61d5ba0f03f98ff2d36319dfea1034ae 0 (*) {'ef1': '*', 'user': 'test'} (glob)
  $ hg phase 2
  2: draft
  $ glog
  @  3@foo(draft) reseta
  |
  o  2@foo(draft) changea
  |
  o  1@foo(draft) adda
  
Specify precise commit date with -d
  $ hg amend -d '2001-02-03 04:05:06 +0700'
  $ hg parents --template '{rev}  {date|date}\n'
  4  Sat Feb 03 04:05:06 2001 +0700

Specify "now" as commit date with -D
  $ before=`date +%s`
  $ hg amend -D
  $ commit=`hg parents --template '{date|hgdate} rev{rev}\n'`
  $ after=`date +%s`
  $ (echo $before ; echo $commit; echo $after) | sort -k1 -n -s
  \d+ (re)
  \d+ 0 rev5 (re)
  \d+ (re)

Specify current user as committer with -U
  $ HGUSER=newbie hg amend -U
  $ hg parents --template '{rev}  {author}\n'
  6  newbie

Check that --logfile works
  $ echo "logfile message" > logfile.txt
  $ hg amend -l logfile.txt
  $ hg log -r . -T "{desc}\n"
  logfile message

# Make sure we don't get reparented to -1 with no username (issue4211)
  $ HGUSER=
  $ hg amend -e --config ui.username= -m "empty user"
  abort: no username supplied
  (use 'hg config --edit' to set your username)
  [255]
  $ hg sum
  parent: 7:* tip (glob)
   logfile message
  branch: foo
  commit: 1 unknown (clean)
  update: (current)
  phases: 3 draft

Check the help
  $ hg amend -h
  hg amend [OPTION]... [FILE]...
  
  aliases: refresh
  
  combine a changeset with updates and replace it with a new one
  
      Commits a new changeset incorporating both the changes to the given files
      and all the changes from the current parent changeset into the repository.
  
      See 'hg commit' for details about committing changes.
  
      If you don't specify -m, the parent's message will be reused.
  
      If --extract is specified, the behavior of 'hg amend' is reversed: Changes
      to selected files in the checked out revision appear again as uncommitted
      changed in the working directory.
  
      Returns 0 on success, 1 if nothing changed.
  
  options ([+] can be repeated):
  
   -A --addremove           mark new/missing files as added/removed before
                            committing
   -a --all                 match all files
   -e --edit                invoke editor on commit messages
      --extract             extract changes from the commit to the working copy
      --patch               make changes to wdir parent by editing patch
      --close-branch        mark a branch as closed, hiding it from the branch
                            list
   -s --secret              use the secret phase for committing
   -n --note VALUE          store a note on amend
   -I --include PATTERN [+] include names matching the given patterns
   -X --exclude PATTERN [+] exclude names matching the given patterns
   -m --message TEXT        use text as commit message
   -l --logfile FILE        read commit message from file
   -d --date DATE           record the specified date as commit date
   -u --user USER           record the specified user as committer
   -D --current-date        record the current date as commit date
   -U --current-user        record the current user as committer
   -i --interactive         use interactive mode
  
  (some details hidden, use --verbose to show complete help)