annotate tests/test-histedit-edit.t @ 24255:4bfe9f2d9761

revlog: addgroup checks if incoming deltas add censored revs, sets flag bit

A censored revision stored in a revlog should have the censored revlog index
flag bit set. This implies we must know if a revision is censored before we
add it to the revlog. When adding revisions from exchanged deltas, we would
prefer to determine this flag without decoding every single full text.

This change introduces a heuristic based on assumptions around the Mercurial
delta format and filelog metadata. Since deltas which produce a censored
revision must be full-replacement deltas, we can read the delta's first bytes
to check the filelog metadata. Since "censored" is the alphabetically first
filelog metadata key, censored filelog revisions have a well-known prefix we
can look for.

For more on the design and background of the censorship feature, see:
http://mercurial.selenic.com/wiki/CensorPlan

  $ . "$TESTDIR/histedit-helpers.sh"

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > histedit=
  > strip=
  > EOF

  $ initrepo ()
  > {
  >     hg init r
  >     cd r
  >     for x in a b c d e f g; do
  >         echo $x > $x
  >         hg add $x
  >         hg ci -m $x
  >     done
  > }

  $ initrepo

log before edit
  $ hg log --graph
  @  changeset:   6:3c6a8ed2ebe8
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     g
  |
  o  changeset:   5:652413bf663e
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     f
  |
  o  changeset:   4:e860deea161a
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     e
  |
  o  changeset:   3:055a42cdd887
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     d
  |
  o  changeset:   2:177f92b77385
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     c
  |
  o  changeset:   1:d2ae7f538514
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     b
  |
  o  changeset:   0:cb9a9f314b8b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     a
  

edit the history
  $ hg histedit 177f92b77385 --commands - 2>&1 << EOF| fixbundle
  > pick 177f92b77385 c
  > pick 055a42cdd887 d
  > edit e860deea161a e
  > pick 652413bf663e f
  > pick 3c6a8ed2ebe8 g
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.

edit the plan
  $ hg histedit --edit-plan --commands - 2>&1 << EOF
  > edit e860deea161a e
  > pick 652413bf663e f
  > drop 3c6a8ed2ebe8 g
  > EOF

Go at a random point and try to continue

  $ hg id -n
  3+
  $ hg up 0
  abort: histedit in progress
  (use 'hg histedit --continue' or 'hg histedit --abort')
  [255]

Try to delete necessary commit
  $ hg strip -r 652413bf663e
  abort: histedit in progress, can't strip 363532343133
  [255]

commit, then edit the revision
  $ hg ci -m 'wat'
  created new head
  $ echo a > e
  $ HGEDITOR='echo foobaz > ' hg histedit --continue 2>&1 | fixbundle
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg log --graph
  @  changeset:   6:b5f70786f9b0
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     f
  |
  o  changeset:   5:a5e1ba2f7afb
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     foobaz
  |
  o  changeset:   4:1a60820cd1f6
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     wat
  |
  o  changeset:   3:055a42cdd887
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     d
  |
  o  changeset:   2:177f92b77385
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     c
  |
  o  changeset:   1:d2ae7f538514
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     b
  |
  o  changeset:   0:cb9a9f314b8b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     a
  

  $ hg cat e
  a

check histedit_source

  $ hg log --debug --rev 5
  changeset:   5:a5e1ba2f7afb899ef1581cea528fd885d2fca70d
  phase:       draft
  parent:      4:1a60820cd1f6004a362aa622ebc47d59bc48eb34
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    5:5ad3be8791f39117565557781f5464363b918a45
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files:       e
  extra:       branch=default
  extra:       histedit_source=e860deea161a2f77de56603b340ebbb4536308ae
  description:
  foobaz
  
  

  $ hg histedit tip --commands - 2>&1 <<EOF| fixbundle
  > edit b5f70786f9b0 f
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.
  $ hg status
  A f

  $ hg summary
  parent: 5:a5e1ba2f7afb 
   foobaz
  branch: default
  commit: 1 added (new branch head)
  update: 1 new changesets (update)
  hist:   1 remaining (histedit --continue)

(test also that editor is invoked if histedit is continued for
"edit" action)

  $ HGEDITOR='cat' hg histedit --continue
  f
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: test
  HG: branch 'default'
  HG: added f
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/r/.hg/strip-backup/b5f70786f9b0-c28d9c86-backup.hg (glob)

  $ hg status

log after edit
  $ hg log --limit 1
  changeset:   6:a107ee126658
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     f
  

say we'll change the message, but don't.
  $ cat > ../edit.sh <<EOF
  > cat "\$1" | sed s/pick/mess/ > tmp
  > mv tmp "\$1"
  > EOF
  $ HGEDITOR="sh ../edit.sh" hg histedit tip 2>&1 | fixbundle
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg status
  $ hg log --limit 1
  changeset:   6:1fd3b2fe7754
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     f
  

modify the message

check saving last-message.txt, at first

  $ cat > $TESTTMP/commitfailure.py <<EOF
  > from mercurial import util
  > def reposetup(ui, repo):
  >     class commitfailure(repo.__class__):
  >         def commit(self, *args, **kwargs):
  >             raise util.Abort('emulating unexpected abort')
  >     repo.__class__ = commitfailure
  > EOF
  $ cat >> .hg/hgrc <<EOF
  > [extensions]
  > # this failure occurs before editor invocation
  > commitfailure = $TESTTMP/commitfailure.py
  > EOF

  $ cat > $TESTTMP/editor.sh <<EOF
  > echo "==== before editing"
  > cat \$1
  > echo "===="
  > echo "check saving last-message.txt" >> \$1
  > EOF

(test that editor is not invoked before transaction starting)

  $ rm -f .hg/last-message.txt
  $ HGEDITOR="sh $TESTTMP/editor.sh" hg histedit tip --commands - 2>&1 << EOF | fixbundle
  > mess 1fd3b2fe7754 f
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  abort: emulating unexpected abort
  $ test -f .hg/last-message.txt
  [1]

  $ cat >> .hg/hgrc <<EOF
  > [extensions]
  > commitfailure = !
  > EOF
  $ hg histedit --abort -q

(test that editor is invoked and commit message is saved into
"last-message.txt")

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > # this failure occurs after editor invocation
  > pretxncommit.unexpectedabort = false
  > EOF

  $ hg status --rev '1fd3b2fe7754^1' --rev 1fd3b2fe7754
  A f

  $ rm -f .hg/last-message.txt
  $ HGEDITOR="sh $TESTTMP/editor.sh" hg histedit tip --commands - 2>&1 << EOF
  > mess 1fd3b2fe7754 f
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  adding f
  ==== before editing
  f
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: test
  HG: branch 'default'
  HG: added f
  ====
  transaction abort!
  rollback completed
  note: commit message saved in .hg/last-message.txt
  abort: pretxncommit.unexpectedabort hook exited with status 1
  [255]
  $ cat .hg/last-message.txt
  f
  
  
  check saving last-message.txt

(test also that editor is invoked if histedit is continued for "message"
action)

  $ HGEDITOR=cat hg histedit --continue
  f
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: test
  HG: branch 'default'
  HG: added f
  transaction abort!
  rollback completed
  note: commit message saved in .hg/last-message.txt
  abort: pretxncommit.unexpectedabort hook exited with status 1
  [255]

  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > pretxncommit.unexpectedabort =
  > EOF
  $ hg histedit --abort -q

then, check "modify the message" itself

  $ hg histedit tip --commands - 2>&1 << EOF | fixbundle
  > mess 1fd3b2fe7754 f
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg status
  $ hg log --limit 1
  changeset:   6:62feedb1200e
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     f
  

rollback should not work after a histedit
  $ hg rollback
  no rollback information available
  [1]

  $ cd ..
  $ hg clone -qr0 r r0
  $ cd r0
  $ hg phase -fdr0
  $ hg histedit --commands - 0 2>&1 << EOF
  > edit cb9a9f314b8b a > $EDITED
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  adding a
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.
  [1]
  $ HGEDITOR=true hg histedit --continue
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/r0/.hg/strip-backup/cb9a9f314b8b-cc5ccb0b-backup.hg (glob)