view tests/test-rebase-scenario-global.t @ 42619:20d0e59be79b

tests: show the files fields of changelogs for many merges

I don't think there's coverage for many of the subtle cases, and I
found it hard to understand what the code is doing by reading it.  The
test takes 40s to run on a laptop, or 9s with --chg.

I have yet to find a description of what the files field is supposed
to be for merges. I thought it could be one of:
1. the files added/modified/removed relative to p1 (wouldn't seem
  useful, but `hg diff -c -r mergerev` has this behavior)
2. the files with filelog nodes not in either parent (i.e., what is
needed to create a bundle out of a commit)
3. the files added/removed/modified files by merge itself [1]

It's clearly not 1, because file contents merges are symmetric. It's
clearly not 2 because removed files and exec bit changes are
listed. It's also not 3 but I think it's intended to be 3 and the
differences are bugs.

Assuming 3, the test shows that, for merges, the list of files both
overapproximates and underapproximates. All the cases involve file
changes not in the filelog but in the manifest (existence of file
at revision, exec bit and file vs symlink).

I didn't look at all underapproximations, but they looked minor. The
two overapproximations are problematic though because they both cause
potentially long lists of files when merging cleanly.


[1] even what it means for the merge commit itself to change a file is
not completely trivial. A file in the merge being the same as in one
of the parent is too lax as it would consider that merges change
nothing when they revert all the changes done on one side. The
criteria used in the test and in the next commit for "merge didn't
touch a file" is:
- the parents and the merge all have the same file
- or, one parent didn't touch the file and the other parent contains
  the same file as the merge

Differential Revision: https://phab.mercurial-scm.org/D6612

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > drawdag=$TESTDIR/drawdag.py
  > 
  > [phases]
  > publish=False
  > 
  > [alias]
  > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n"
  > EOF


  $ hg init a
  $ cd a
  $ hg unbundle "$TESTDIR/bundles/rebase.hg"
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  new changesets cd010b8cd998:02de42196ebe (8 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg up tip
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ..


Rebasing
D onto H - simple rebase:
(this also tests that editor is invoked if '--edit' is specified, and that we
can abort or warn for colliding untracked files)

  $ hg clone -q -u . a a1
  $ cd a1

  $ hg tglog
  @  7: 02de42196ebe 'H'
  |
  | o  6: eea13746799a 'G'
  |/|
  o |  5: 24b6387c8c8c 'F'
  | |
  | o  4: 9520eea781bc 'E'
  |/
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  

  $ hg status --rev "3^1" --rev 3
  A D
  $ echo collide > D
  $ HGEDITOR=cat hg rebase -s 3 -d 7 --edit --config merge.checkunknown=warn
  rebasing 3:32af7686d403 "D"
  D: replacing untracked file
  D
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: Nicolas Dumazet <[e-mail]>
  HG: branch 'default'
  HG: added D
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/32af7686d403-6f7dface-rebase.hg
  $ cat D.orig
  collide
  $ rm D.orig

  $ hg tglog
  o  7: 1619f02ff7dd 'D'
  |
  @  6: 02de42196ebe 'H'
  |
  | o  5: eea13746799a 'G'
  |/|
  o |  4: 24b6387c8c8c 'F'
  | |
  | o  3: 9520eea781bc 'E'
  |/
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


D onto F - intermediate point:
(this also tests that editor is not invoked if '--edit' is not specified, and
that we can ignore for colliding untracked files)

  $ hg clone -q -u . a a2
  $ cd a2
  $ echo collide > D

  $ HGEDITOR=cat hg rebase -s 3 -d 5 --config merge.checkunknown=ignore
  rebasing 3:32af7686d403 "D"
  saved backup bundle to $TESTTMP/a2/.hg/strip-backup/32af7686d403-6f7dface-rebase.hg
  $ cat D.orig
  collide
  $ rm D.orig

  $ hg tglog
  o  7: 2107530e74ab 'D'
  |
  | @  6: 02de42196ebe 'H'
  |/
  | o  5: eea13746799a 'G'
  |/|
  o |  4: 24b6387c8c8c 'F'
  | |
  | o  3: 9520eea781bc 'E'
  |/
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


E onto H - skip of G:
(this also tests that we can overwrite untracked files and don't create backups
if they have the same contents)

  $ hg clone -q -u . a a3
  $ cd a3
  $ hg cat -r 4 E | tee E
  E

  $ hg rebase -s 4 -d 7
  rebasing 4:9520eea781bc "E"
  rebasing 6:eea13746799a "G"
  note: not rebasing 6:eea13746799a "G", its destination already has all its changes
  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/9520eea781bc-fcd8edd4-rebase.hg
  $ f E.orig
  E.orig: file not found

  $ hg tglog
  o  6: 9f8b8ec77260 'E'
  |
  @  5: 02de42196ebe 'H'
  |
  o  4: 24b6387c8c8c 'F'
  |
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


F onto E - rebase of a branching point (skip G):

  $ hg clone -q -u . a a4
  $ cd a4

  $ hg rebase -s 5 -d 4
  rebasing 5:24b6387c8c8c "F"
  rebasing 6:eea13746799a "G"
  note: not rebasing 6:eea13746799a "G", its destination already has all its changes
  rebasing 7:02de42196ebe "H" (tip)
  saved backup bundle to $TESTTMP/a4/.hg/strip-backup/24b6387c8c8c-c3fe765d-rebase.hg

  $ hg tglog
  @  6: e9240aeaa6ad 'H'
  |
  o  5: 5d0ccadb6e3e 'F'
  |
  o  4: 9520eea781bc 'E'
  |
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


G onto H - merged revision having a parent in ancestors of target:

  $ hg clone -q -u . a a5
  $ cd a5

  $ hg rebase -s 6 -d 7
  rebasing 6:eea13746799a "G"
  saved backup bundle to $TESTTMP/a5/.hg/strip-backup/eea13746799a-883828ed-rebase.hg

  $ hg tglog
  o    7: 397834907a90 'G'
  |\
  | @  6: 02de42196ebe 'H'
  | |
  | o  5: 24b6387c8c8c 'F'
  | |
  o |  4: 9520eea781bc 'E'
  |/
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


F onto B - G maintains E as parent:

  $ hg clone -q -u . a a6
  $ cd a6

  $ hg rebase -s 5 -d 1
  rebasing 5:24b6387c8c8c "F"
  rebasing 6:eea13746799a "G"
  rebasing 7:02de42196ebe "H" (tip)
  saved backup bundle to $TESTTMP/a6/.hg/strip-backup/24b6387c8c8c-c3fe765d-rebase.hg

  $ hg tglog
  @  7: c87be72f9641 'H'
  |
  | o  6: 17badd73d4f1 'G'
  |/|
  o |  5: 74fb9ed646c4 'F'
  | |
  | o  4: 9520eea781bc 'E'
  | |
  | | o  3: 32af7686d403 'D'
  | | |
  +---o  2: 5fddd98957c8 'C'
  | |
  o |  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
  $ cd ..


These will fail (using --source):

G onto F - rebase onto an ancestor:

  $ hg clone -q -u . a a7
  $ cd a7

  $ hg rebase -s 6 -d 5
  nothing to rebase
  [1]

F onto G - rebase onto a descendant:

  $ hg rebase -s 5 -d 6
  abort: source and destination form a cycle
  [255]

G onto B - merge revision with both parents not in ancestors of target:

  $ hg rebase -s 6 -d 1
  rebasing 6:eea13746799a "G"
  abort: cannot rebase 6:eea13746799a without moving at least one of its parents
  [255]
  $ hg rebase --abort
  rebase aborted

These will abort gracefully (using --base):

G onto G - rebase onto same changeset:

  $ hg rebase -b 6 -d 6
  nothing to rebase - eea13746799a is both "base" and destination
  [1]

G onto F - rebase onto an ancestor:

  $ hg rebase -b 6 -d 5
  nothing to rebase
  [1]

F onto G - rebase onto a descendant:

  $ hg rebase -b 5 -d 6
  nothing to rebase - "base" 24b6387c8c8c is already an ancestor of destination eea13746799a
  [1]

C onto A - rebase onto an ancestor:

  $ hg rebase -d 0 -s 2
  rebasing 2:5fddd98957c8 "C"
  rebasing 3:32af7686d403 "D"
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/5fddd98957c8-f9244fa1-rebase.hg
  $ hg tglog
  o  7: c9659aac0000 'D'
  |
  o  6: e1c4361dd923 'C'
  |
  | @  5: 02de42196ebe 'H'
  | |
  | | o  4: eea13746799a 'G'
  | |/|
  | o |  3: 24b6387c8c8c 'F'
  |/ /
  | o  2: 9520eea781bc 'E'
  |/
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  

Check rebasing public changeset

  $ hg pull --config phases.publish=True -q -r 6 . # update phase of 6
  $ hg rebase -d 0 -b 6
  nothing to rebase
  [1]
  $ hg rebase -d 5 -b 6
  abort: can't rebase public changeset e1c4361dd923
  (see 'hg help phases' for details)
  [255]
  $ hg rebase -d 5 -r '1 + (6::)'
  abort: can't rebase public changeset e1c4361dd923
  (see 'hg help phases' for details)
  [255]

  $ hg rebase -d 5 -b 6 --keep
  rebasing 6:e1c4361dd923 "C"
  rebasing 7:c9659aac0000 "D" (tip)

Check rebasing mutable changeset
Source phase greater or equal to destination phase: new changeset get the phase of source:
  $ hg id -n
  5
  $ hg rebase -s9 -d0
  rebasing 9:2b23e52411f4 "D" (tip)
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2b23e52411f4-f942decf-rebase.hg
  $ hg id -n # check we updated back to parent
  5
  $ hg log --template "{phase}\n" -r 9
  draft
  $ hg rebase -s9 -d1
  rebasing 9:2cb10d0cfc6c "D" (tip)
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2cb10d0cfc6c-ddb0f256-rebase.hg
  $ hg log --template "{phase}\n" -r 9
  draft
  $ hg phase --force --secret 9
  $ hg rebase -s9 -d0
  rebasing 9:c5b12b67163a "D" (tip)
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/c5b12b67163a-4e372053-rebase.hg
  $ hg log --template "{phase}\n" -r 9
  secret
  $ hg rebase -s9 -d1
  rebasing 9:2a0524f868ac "D" (tip)
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2a0524f868ac-cefd8574-rebase.hg
  $ hg log --template "{phase}\n" -r 9
  secret
Source phase lower than destination phase: new changeset get the phase of destination:
  $ hg rebase -s8 -d9
  rebasing 8:6d4f22462821 "C"
  saved backup bundle to $TESTTMP/a7/.hg/strip-backup/6d4f22462821-3441f70b-rebase.hg
  $ hg log --template "{phase}\n" -r 'rev(9)'
  secret

  $ cd ..

Check that temporary bundle doesn't lose phase when not using generaldelta

  $ hg --config format.usegeneraldelta=no init issue5678
  $ cd issue5678
  $ grep generaldelta .hg/requires
  [1]
  $ echo a > a
  $ hg ci -Aqm a
  $ echo b > b
  $ hg ci -Aqm b
  $ hg co -q '.^'
  $ echo c > c
  $ hg ci -Aqm c
  $ hg phase --public
  $ hg log -G -T '{rev}:{node|shortest} {phase} {desc}\n'
  @  2:d36c public c
  |
  | o  1:d2ae draft b
  |/
  o  0:cb9a public a
  
  $ hg rebase -s 1 -d 2
  rebasing 1:d2ae7f538514 "b"
  saved backup bundle to $TESTTMP/issue5678/.hg/strip-backup/d2ae7f538514-2953539b-rebase.hg
  $ hg log -G -T '{rev}:{node|shortest} {phase} {desc}\n'
  o  2:c882 draft b
  |
  @  1:d36c public c
  |
  o  0:cb9a public a
  
  $ cd ..

Test for revset

We need a bit different graph
All destination are B

  $ hg init ah
  $ cd ah
  $ hg unbundle "$TESTDIR/bundles/rebase-revset.hg"
  adding changesets
  adding manifests
  adding file changes
  added 9 changesets with 9 changes to 9 files (+2 heads)
  new changesets 9ae2ed22e576:479ddb54a924 (9 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg tglog
  o  8: 479ddb54a924 'I'
  |
  o  7: 72434a4e60b0 'H'
  |
  o  6: 3d8a618087a7 'G'
  |
  | o  5: 41bfcc75ed73 'F'
  | |
  | o  4: c01897464e7f 'E'
  |/
  o  3: ffd453c31098 'D'
  |
  o  2: c9e50f6cdc55 'C'
  |
  | o  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  
  $ cd ..


Simple case with keep:

Source on have two descendant heads but ask for one

  $ hg clone -q -u . ah ah1
  $ cd ah1
  $ hg rebase -r '2::8' -d 1
  abort: can't remove original changesets with unrebased descendants
  (use --keep to keep original changesets)
  [255]
  $ hg rebase -r '2::8' -d 1 -k
  rebasing 2:c9e50f6cdc55 "C"
  rebasing 3:ffd453c31098 "D"
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  rebasing 8:479ddb54a924 "I" (tip)
  $ hg tglog
  o  13: 9bf1d9358a90 'I'
  |
  o  12: 274623a778d4 'H'
  |
  o  11: ab8c8617c8e8 'G'
  |
  o  10: c8cbf59f70da 'D'
  |
  o  9: 563e4faab485 'C'
  |
  | o  8: 479ddb54a924 'I'
  | |
  | o  7: 72434a4e60b0 'H'
  | |
  | o  6: 3d8a618087a7 'G'
  | |
  | | o  5: 41bfcc75ed73 'F'
  | | |
  | | o  4: c01897464e7f 'E'
  | |/
  | o  3: ffd453c31098 'D'
  | |
  | o  2: c9e50f6cdc55 'C'
  | |
  o |  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  

  $ cd ..

Base on have one descendant heads we ask for but common ancestor have two

  $ hg clone -q -u . ah ah2
  $ cd ah2
  $ hg rebase -r '3::8' -d 1
  abort: can't remove original changesets with unrebased descendants
  (use --keep to keep original changesets)
  [255]
  $ hg rebase -r '3::8' -d 1 --keep
  rebasing 3:ffd453c31098 "D"
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  rebasing 8:479ddb54a924 "I" (tip)
  $ hg tglog
  o  12: 9d7da0053b1c 'I'
  |
  o  11: 8fbd00952cbc 'H'
  |
  o  10: 51d434a615ee 'G'
  |
  o  9: a9c125634b0b 'D'
  |
  | o  8: 479ddb54a924 'I'
  | |
  | o  7: 72434a4e60b0 'H'
  | |
  | o  6: 3d8a618087a7 'G'
  | |
  | | o  5: 41bfcc75ed73 'F'
  | | |
  | | o  4: c01897464e7f 'E'
  | |/
  | o  3: ffd453c31098 'D'
  | |
  | o  2: c9e50f6cdc55 'C'
  | |
  o |  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  

  $ cd ..

rebase subset

  $ hg clone -q -u . ah ah3
  $ cd ah3
  $ hg rebase -r '3::7' -d 1
  abort: can't remove original changesets with unrebased descendants
  (use --keep to keep original changesets)
  [255]
  $ hg rebase -r '3::7' -d 1 --keep
  rebasing 3:ffd453c31098 "D"
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  $ hg tglog
  o  11: 8fbd00952cbc 'H'
  |
  o  10: 51d434a615ee 'G'
  |
  o  9: a9c125634b0b 'D'
  |
  | o  8: 479ddb54a924 'I'
  | |
  | o  7: 72434a4e60b0 'H'
  | |
  | o  6: 3d8a618087a7 'G'
  | |
  | | o  5: 41bfcc75ed73 'F'
  | | |
  | | o  4: c01897464e7f 'E'
  | |/
  | o  3: ffd453c31098 'D'
  | |
  | o  2: c9e50f6cdc55 'C'
  | |
  o |  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  

  $ cd ..

rebase subset with multiple head

  $ hg clone -q -u . ah ah4
  $ cd ah4
  $ hg rebase -r '3::(7+5)' -d 1
  abort: can't remove original changesets with unrebased descendants
  (use --keep to keep original changesets)
  [255]
  $ hg rebase -r '3::(7+5)' -d 1 --keep
  rebasing 3:ffd453c31098 "D"
  rebasing 4:c01897464e7f "E"
  rebasing 5:41bfcc75ed73 "F"
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  $ hg tglog
  o  13: 8fbd00952cbc 'H'
  |
  o  12: 51d434a615ee 'G'
  |
  | o  11: df23d8bda0b7 'F'
  | |
  | o  10: 47b7889448ff 'E'
  |/
  o  9: a9c125634b0b 'D'
  |
  | o  8: 479ddb54a924 'I'
  | |
  | o  7: 72434a4e60b0 'H'
  | |
  | o  6: 3d8a618087a7 'G'
  | |
  | | o  5: 41bfcc75ed73 'F'
  | | |
  | | o  4: c01897464e7f 'E'
  | |/
  | o  3: ffd453c31098 'D'
  | |
  | o  2: c9e50f6cdc55 'C'
  | |
  o |  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  

  $ cd ..

More advanced tests

rebase on ancestor with revset

  $ hg clone -q -u . ah ah5
  $ cd ah5
  $ hg rebase -r '6::' -d 2
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  rebasing 8:479ddb54a924 "I" (tip)
  saved backup bundle to $TESTTMP/ah5/.hg/strip-backup/3d8a618087a7-b4f73f31-rebase.hg
  $ hg tglog
  o  8: fcb52e68a694 'I'
  |
  o  7: 77bd65cd7600 'H'
  |
  o  6: 12d0e738fb18 'G'
  |
  | o  5: 41bfcc75ed73 'F'
  | |
  | o  4: c01897464e7f 'E'
  | |
  | o  3: ffd453c31098 'D'
  |/
  o  2: c9e50f6cdc55 'C'
  |
  | o  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  
  $ cd ..


rebase with multiple root.
We rebase E and G on B
We would expect heads are I, F if it was supported

  $ hg clone -q -u . ah ah6
  $ cd ah6
  $ hg rebase -r '(4+6)::' -d 1
  rebasing 4:c01897464e7f "E"
  rebasing 5:41bfcc75ed73 "F"
  rebasing 6:3d8a618087a7 "G"
  rebasing 7:72434a4e60b0 "H"
  rebasing 8:479ddb54a924 "I" (tip)
  saved backup bundle to $TESTTMP/ah6/.hg/strip-backup/3d8a618087a7-aae93a24-rebase.hg
  $ hg tglog
  o  8: 9136df9a87cf 'I'
  |
  o  7: 23e8f30da832 'H'
  |
  o  6: b0efe8534e8b 'G'
  |
  | o  5: 6eb5b496ab79 'F'
  | |
  | o  4: d15eade9b0b1 'E'
  |/
  | o  3: ffd453c31098 'D'
  | |
  | o  2: c9e50f6cdc55 'C'
  | |
  o |  1: 8fd0f7e49f53 'B'
  |/
  o  0: 9ae2ed22e576 'A'
  
  $ cd ..

More complex rebase with multiple roots
each root have a different common ancestor with the destination and this is a detach

(setup)

  $ hg clone -q -u . a a8
  $ cd a8
  $ echo I > I
  $ hg add I
  $ hg commit -m I
  $ hg up 4
  1 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ echo I > J
  $ hg add J
  $ hg commit -m J
  created new head
  $ echo I > K
  $ hg add K
  $ hg commit -m K
  $ hg tglog
  @  10: 23a4ace37988 'K'
  |
  o  9: 1301922eeb0c 'J'
  |
  | o  8: e7ec4e813ba6 'I'
  | |
  | o  7: 02de42196ebe 'H'
  | |
  +---o  6: eea13746799a 'G'
  | |/
  | o  5: 24b6387c8c8c 'F'
  | |
  o |  4: 9520eea781bc 'E'
  |/
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  
(actual test)

  $ hg rebase --dest 'desc(G)' --rev 'desc(K) + desc(I)'
  rebasing 8:e7ec4e813ba6 "I"
  rebasing 10:23a4ace37988 "K" (tip)
  saved backup bundle to $TESTTMP/a8/.hg/strip-backup/23a4ace37988-b06984b3-rebase.hg
  $ hg log --rev 'children(desc(G))'
  changeset:   9:adb617877056
  parent:      6:eea13746799a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     I
  
  changeset:   10:882431a34a0e
  tag:         tip
  parent:      6:eea13746799a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     K
  
  $ hg tglog
  @  10: 882431a34a0e 'K'
  |
  | o  9: adb617877056 'I'
  |/
  | o  8: 1301922eeb0c 'J'
  | |
  | | o  7: 02de42196ebe 'H'
  | | |
  o---+  6: eea13746799a 'G'
  |/ /
  | o  5: 24b6387c8c8c 'F'
  | |
  o |  4: 9520eea781bc 'E'
  |/
  | o  3: 32af7686d403 'D'
  | |
  | o  2: 5fddd98957c8 'C'
  | |
  | o  1: 42ccdea3bb16 'B'
  |/
  o  0: cd010b8cd998 'A'
  

Test that rebase is not confused by $CWD disappearing during rebase (issue4121)

  $ cd ..
  $ hg init cwd-vanish
  $ cd cwd-vanish
  $ touch initial-file
  $ hg add initial-file
  $ hg commit -m 'initial commit'
  $ touch dest-file
  $ hg add dest-file
  $ hg commit -m 'dest commit'
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ touch other-file
  $ hg add other-file
  $ hg commit -m 'first source commit'
  created new head
  $ mkdir subdir
  $ cd subdir
  $ touch subfile
  $ hg add subfile
  $ hg commit -m 'second source with subdir'

  $ hg rebase -b . -d 1 --traceback
  rebasing 2:779a07b1b7a0 "first source commit"
  current directory was removed (rmcwd !)
  (consider changing to repo root: $TESTTMP/cwd-vanish) (rmcwd !)
  rebasing 3:a7d6f3a00bf3 "second source with subdir" (tip)
  saved backup bundle to $TESTTMP/cwd-vanish/.hg/strip-backup/779a07b1b7a0-853e0073-rebase.hg

Get back to the root of cwd-vanish. Note that even though `cd ..`
works on most systems, it does not work on FreeBSD 10, so we use an
absolute path to get back to the repository.
  $ cd $TESTTMP

Test that rebase is done in topo order (issue5370)

  $ hg init order
  $ cd order
  $ touch a && hg add a && hg ci -m A
  $ touch b && hg add b && hg ci -m B
  $ touch c && hg add c && hg ci -m C
  $ hg up 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ touch d && hg add d && hg ci -m D
  created new head
  $ hg up 2
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ touch e && hg add e && hg ci -m E
  $ hg up 3
  1 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ touch f && hg add f && hg ci -m F
  $ hg up 0
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ touch g && hg add g && hg ci -m G
  created new head

  $ hg tglog
  @  6: 124bb27b6f28 'G'
  |
  | o  5: 412b391de760 'F'
  | |
  | | o  4: 82ae8dc7a9b7 'E'
  | | |
  | o |  3: ab709c9f7171 'D'
  | | |
  | | o  2: d84f5cfaaf14 'C'
  | |/
  | o  1: 76035bbd54bd 'B'
  |/
  o  0: 216878401574 'A'
  

  $ hg rebase -s 1 -d 6
  rebasing 1:76035bbd54bd "B"
  rebasing 2:d84f5cfaaf14 "C"
  rebasing 4:82ae8dc7a9b7 "E"
  rebasing 3:ab709c9f7171 "D"
  rebasing 5:412b391de760 "F"
  saved backup bundle to $TESTTMP/order/.hg/strip-backup/76035bbd54bd-e341bc99-rebase.hg

  $ hg tglog
  o  6: 31884cfb735e 'F'
  |
  o  5: 6d89fa5b0909 'D'
  |
  | o  4: de64d97c697b 'E'
  | |
  | o  3: b18e4d2d0aa1 'C'
  |/
  o  2: 0983daf9ff6a 'B'
  |
  @  1: 124bb27b6f28 'G'
  |
  o  0: 216878401574 'A'
  

Test experimental revset
========================

  $ cd ../cwd-vanish

Make the repo a bit more interesting

  $ hg up 1
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo aaa > aaa
  $ hg add aaa
  $ hg commit -m aaa
  created new head
  $ hg log -G
  @  changeset:   4:5f7bc9025ed2
  |  tag:         tip
  |  parent:      1:58d79cc1cf43
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     aaa
  |
  | o  changeset:   3:1910d5ff34ea
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     second source with subdir
  | |
  | o  changeset:   2:82901330b6ef
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     first source commit
  |
  o  changeset:   1:58d79cc1cf43
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     dest commit
  |
  o  changeset:   0:e94b687f7da3
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     initial commit
  

Testing from lower head

  $ hg up 3
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg log -r '_destrebase()'
  changeset:   4:5f7bc9025ed2
  tag:         tip
  parent:      1:58d79cc1cf43
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     aaa
  

Testing from upper head

  $ hg log -r '_destrebase(4)'
  changeset:   3:1910d5ff34ea
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     second source with subdir
  
  $ hg up 4
  1 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg log -r '_destrebase()'
  changeset:   3:1910d5ff34ea
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     second source with subdir
  
Testing rebase being called inside another transaction

  $ cd $TESTTMP
  $ hg init tr-state
  $ cd tr-state
  $ cat > $TESTTMP/wraprebase.py <<EOF
  > from __future__ import absolute_import
  > from mercurial import extensions
  > def _rebase(orig, ui, repo, *args, **kwargs):
  >     with repo.wlock():
  >         with repo.lock():
  >             with repo.transaction(b'wrappedrebase'):
  >                 return orig(ui, repo, *args, **kwargs)
  > def wraprebase(loaded):
  >     assert loaded
  >     rebasemod = extensions.find(b'rebase')
  >     extensions.wrapcommand(rebasemod.cmdtable, b'rebase', _rebase)
  > def extsetup(ui):
  >     extensions.afterloaded(b'rebase', wraprebase)
  > EOF

  $ cat >> .hg/hgrc <<EOF
  > [extensions]
  > wraprebase=$TESTTMP/wraprebase.py
  > [experimental]
  > evolution=true
  > EOF

  $ hg debugdrawdag <<'EOS'
  > B C
  > |/
  > A
  > EOS

  $ hg rebase -s C -d B
  rebasing 2:dc0947a82db8 "C" (C tip)

  $ [ -f .hg/rebasestate ] && echo 'WRONG: rebasestate should not exist'
  [1]