view tests/test-histedit-obsolete.t @ 22196:23fe278bde43

largefiles: keep largefiles from colliding with normal one during linear merge

Before this patch, linear merging of modified or newly added largefile
causes unexpected result, if (1) largefile collides with same name
normal one in the target revision and (2) "local" largefile is chosen,
even though branch merging between such revisions doesn't.

Expected result of such linear merging is:

  (1) (not yet recorded) largefile is kept in the working directory
  (2) largefile is marked as (re-)"added"
  (3) colliding normal file is marked as "removed"

But actual result is:

  (1) largefile in the working directory is unlinked
  (2) largefile is marked as "normal" (so treated as "missing")
  (3) the dirstate entry for colliding normal file is just dropped

(1) is very serious, because there is no way to restore temporarily
modified largefiles.

(3) prevents the next commit from adding the manifest with correct
"removal of (normal) file" information for newly created changeset.

The root cause of this problem is putting "lfile" into "actions['r']"
in linear-merging case. At liner merging, "actions['r']" causes:

  - unlinking "target file" in the working directory, but "lfile" as
    "target file" is also largefile itself in this case

  - dropping the dirstate entry for target file

"actions['f']" (= "forget") does only the latter, and this is reason
why this patch doesn't choose putting "lfile" into it instead of
"actions['r']".

This patch newly introduces action "lfmr" (LargeFiles: Mark as
Removed) to mark colliding normal file as "removed" without unlinking
it.

This patch uses "hg debugdirstate" instead of "hg status" in test,
because:

  - choosing "local largefile" hides "removed" status of "remote
    normal file" in "hg status" output, and

  - "hg status" for "large2" in this case has another problem fixed in
    the subsequent patch

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

Enable obsolete

  $ cat > ${TESTTMP}/obs.py << EOF
  > import mercurial.obsolete
  > mercurial.obsolete._enabled = True
  > EOF

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > logtemplate= {rev}:{node|short} {desc|firstline}
  > [phases]
  > publish=False
  > [extensions]'
  > histedit=
  > rebase=
  > 
  > obs=${TESTTMP}/obs.py
  > EOF

  $ hg init base
  $ cd base

  $ for x in a b c d e f ; do
  >     echo $x > $x
  >     hg add $x
  >     hg ci -m $x
  > done

  $ hg log --graph
  @  5:652413bf663e f
  |
  o  4:e860deea161a e
  |
  o  3:055a42cdd887 d
  |
  o  2:177f92b77385 c
  |
  o  1:d2ae7f538514 b
  |
  o  0:cb9a9f314b8b a
  

  $ HGEDITOR=cat hg histedit 1
  pick d2ae7f538514 1 b
  pick 177f92b77385 2 c
  pick 055a42cdd887 3 d
  pick e860deea161a 4 e
  pick 652413bf663e 5 f
  
  # Edit history between d2ae7f538514 and 652413bf663e
  #
  # Commits are listed from least to most recent
  #
  # Commands:
  #  p, pick = use commit
  #  e, edit = use commit, but stop for amending
  #  f, fold = use commit, but combine it with the one above
  #  r, roll = like fold, but discard this commit's description
  #  d, drop = remove commit from history
  #  m, mess = edit message without changing commit content
  #
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg histedit 1 --commands - --verbose <<EOF | grep histedit
  > pick 177f92b77385 2 c
  > drop d2ae7f538514 1 b
  > pick 055a42cdd887 3 d
  > fold e860deea161a 4 e
  > pick 652413bf663e 5 f
  > EOF
  saved backup bundle to $TESTTMP/base/.hg/strip-backup/96e494a2d553-backup.hg (glob)
  $ hg log --graph --hidden
  @  8:cacdfd884a93 f
  |
  o  7:59d9f330561f d
  |
  o  6:b346ab9a313d c
  |
  | x  5:652413bf663e f
  | |
  | x  4:e860deea161a e
  | |
  | x  3:055a42cdd887 d
  | |
  | x  2:177f92b77385 c
  | |
  | x  1:d2ae7f538514 b
  |/
  o  0:cb9a9f314b8b a
  
  $ hg debugobsolete
  d2ae7f538514cd87c17547b0de4cea71fe1af9fb 0 {'date': '* *', 'user': 'test'} (glob)
  177f92b773850b59254aa5e923436f921b55483b b346ab9a313db8537ecf96fca3ca3ca984ef3bd7 0 {'date': '* *', 'user': 'test'} (glob)
  055a42cdd88768532f9cf79daa407fc8d138de9b 59d9f330561fd6c88b1a6b32f0e45034d88db784 0 {'date': '* *', 'user': 'test'} (glob)
  e860deea161a2f77de56603b340ebbb4536308ae 59d9f330561fd6c88b1a6b32f0e45034d88db784 0 {'date': '* *', 'user': 'test'} (glob)
  652413bf663ef2a641cab26574e46d5f5a64a55a cacdfd884a9321ec4e1de275ef3949fa953a1f83 0 {'date': '* *', 'user': 'test'} (glob)


Ensure hidden revision does not prevent histedit
-------------------------------------------------

create an hidden revision

  $ hg histedit 6 --commands - << EOF
  > pick b346ab9a313d 6 c
  > drop 59d9f330561f 7 d
  > pick cacdfd884a93 8 f
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log --graph
  @  9:c13eb81022ca f
  |
  o  6:b346ab9a313d c
  |
  o  0:cb9a9f314b8b a
  
check hidden revision are ignored (6 have hidden children 7 and 8)

  $ hg histedit 6 --commands - << EOF
  > pick b346ab9a313d 6 c
  > pick c13eb81022ca 8 f
  > EOF
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved



Test that rewriting leaving instability behind is allowed
---------------------------------------------------------------------

  $ hg up '.^'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg log -r 'children(.)'
  9:c13eb81022ca f (no-eol)
  $ hg histedit -r '.' --commands - <<EOF
  > edit b346ab9a313d 6 c
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  adding c
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.
  [1]
  $ echo c >> c
  $ hg histedit --continue
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg log -r 'unstable()'
  9:c13eb81022ca f (no-eol)

stabilise

  $ hg rebase  -r 'unstable()' -d .
  $ hg up tip -q

Test dropping of changeset on the top of the stack
-------------------------------------------------------

Nothing is rewritten below, the working directory parent must be change for the
dropped changeset to be hidden.

  $ cd ..
  $ hg clone base droplast
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd droplast
  $ hg histedit -r '40db8afa467b' --commands - << EOF
  > pick 40db8afa467b 10 c
  > drop b449568bf7fc 11 f
  > EOF
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg log -G
  @  10:40db8afa467b c
  |
  o  0:cb9a9f314b8b a
  

With rewritten ancestors

  $ echo e > e
  $ hg add e
  $ hg commit -m g
  $ echo f > f
  $ hg add f
  $ hg commit -m h
  $ hg histedit -r '40db8afa467b' --commands - << EOF
  > pick 47a8561c0449 12 g
  > pick 40db8afa467b 10 c
  > drop 1b3b05f35ff0 13 h
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  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 -G
  @  15:ee6544123ab8 c
  |
  o  14:269e713e9eae g
  |
  o  0:cb9a9f314b8b a
  
  $ cd ../base



Test phases support
===========================================

Check that histedit respect immutability
-------------------------------------------

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > logtemplate= {rev}:{node|short} ({phase}) {desc|firstline}\n
  > EOF

  $ hg ph -pv '.^'
  phase changed for 2 changesets
  $ hg log -G
  @  11:b449568bf7fc (draft) f
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ hg histedit -r '.~2'
  abort: cannot edit immutable changeset: cb9a9f314b8b
  [255]


Prepare further testing
-------------------------------------------

  $ for x in g h i j k ; do
  >     echo $x > $x
  >     hg add $x
  >     hg ci -m $x
  > done
  $ hg phase --force --secret .~2
  $ hg log -G
  @  16:ee118ab9fa44 (secret) k
  |
  o  15:3a6c53ee7f3d (secret) j
  |
  o  14:b605fb7503f2 (secret) i
  |
  o  13:7395e1ff83bd (draft) h
  |
  o  12:6b70183d2492 (draft) g
  |
  o  11:b449568bf7fc (draft) f
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ cd ..

simple phase conservation
-------------------------------------------

Resulting changeset should conserve the phase of the original one whatever the
phases.new-commit option is.

New-commit as draft (default)

  $ cp -r base simple-draft
  $ cd simple-draft
  $ hg histedit -r 'b449568bf7fc' --commands - << EOF
  > edit b449568bf7fc 11 f
  > pick 6b70183d2492 12 g
  > pick 7395e1ff83bd 13 h
  > pick b605fb7503f2 14 i
  > pick 3a6c53ee7f3d 15 j
  > pick ee118ab9fa44 16 k
  > EOF
  0 files updated, 0 files merged, 6 files removed, 0 files unresolved
  adding f
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.
  [1]
  $ echo f >> f
  $ hg histedit --continue
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  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 -G
  @  22:12e89af74238 (secret) k
  |
  o  21:636a8687b22e (secret) j
  |
  o  20:ccaf0a38653f (secret) i
  |
  o  19:11a89d1c2613 (draft) h
  |
  o  18:c1dec7ca82ea (draft) g
  |
  o  17:087281e68428 (draft) f
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ cd ..


New-commit as draft (default)

  $ cp -r base simple-secret
  $ cd simple-secret
  $ cat >> .hg/hgrc << EOF
  > [phases]
  > new-commit=secret
  > EOF
  $ hg histedit -r 'b449568bf7fc' --commands - << EOF
  > edit b449568bf7fc 11 f
  > pick 6b70183d2492 12 g
  > pick 7395e1ff83bd 13 h
  > pick b605fb7503f2 14 i
  > pick 3a6c53ee7f3d 15 j
  > pick ee118ab9fa44 16 k
  > EOF
  0 files updated, 0 files merged, 6 files removed, 0 files unresolved
  adding f
  Make changes as needed, you may commit or record as needed now.
  When you are finished, run hg histedit --continue to resume.
  [1]
  $ echo f >> f
  $ hg histedit --continue
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  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 -G
  @  22:12e89af74238 (secret) k
  |
  o  21:636a8687b22e (secret) j
  |
  o  20:ccaf0a38653f (secret) i
  |
  o  19:11a89d1c2613 (draft) h
  |
  o  18:c1dec7ca82ea (draft) g
  |
  o  17:087281e68428 (draft) f
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ cd ..


Changeset reordering
-------------------------------------------

If a secret changeset is put before a draft one, all descendant should be secret.
It seems more important to present the secret phase.

  $ cp -r base reorder
  $ cd reorder
  $ hg histedit -r 'b449568bf7fc' --commands - << EOF
  > pick b449568bf7fc 11 f
  > pick 3a6c53ee7f3d 15 j
  > pick 6b70183d2492 12 g
  > pick b605fb7503f2 14 i
  > pick 7395e1ff83bd 13 h
  > pick ee118ab9fa44 16 k
  > EOF
  0 files updated, 0 files merged, 5 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  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 -G
  @  21:558246857888 (secret) k
  |
  o  20:28bd44768535 (secret) h
  |
  o  19:d5395202aeb9 (secret) i
  |
  o  18:21edda8e341b (secret) g
  |
  o  17:5ab64f3a4832 (secret) j
  |
  o  11:b449568bf7fc (draft) f
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ cd ..

Changeset folding
-------------------------------------------

Folding a secret changeset with a draft one turn the result secret (again,
better safe than sorry). Folding between same phase changeset still works

Note that there is a few reordering in this series for more extensive test

  $ cp -r base folding
  $ cd folding
  $ cat >> .hg/hgrc << EOF
  > [phases]
  > new-commit=secret
  > EOF
  $ hg histedit -r 'b449568bf7fc' --commands - << EOF
  > pick 7395e1ff83bd 13 h
  > fold b449568bf7fc 11 f
  > pick 6b70183d2492 12 g
  > fold 3a6c53ee7f3d 15 j
  > pick b605fb7503f2 14 i
  > fold ee118ab9fa44 16 k
  > EOF
  0 files updated, 0 files merged, 6 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/58019c66f35f-backup.hg (glob)
  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/83d1858e070b-backup.hg (glob)
  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/859969f5ed7e-backup.hg (glob)
  $ hg log -G
  @  19:f9daec13fb98 (secret) i
  |
  o  18:49807617f46a (secret) g
  |
  o  17:050280826e04 (draft) h
  |
  o  10:40db8afa467b (public) c
  |
  o  0:cb9a9f314b8b (public) a
  
  $ hg co 18
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo wat >> wat
  $ hg add wat
  $ hg ci -m 'add wat'
  created new head
  $ hg merge 19
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'merge'
  $ echo not wat > wat
  $ hg ci -m 'modify wat'
  $ hg histedit 17
  abort: cannot edit history that contains merges
  [255]
  $ cd ..