view tests/test-rebase-scenario-global.t @ 13155:f02d7a562a21

subrepo: avoids empty commit when .hgsubstate is dirty (issue2403)

This patch avoids empty commit when .hgsubstate is dirty. Empty commit
was caused by .hgsubstate being updated back to the state of the
working copy parent when committing, if a user had changed it manually
and not made any changes in subrepositories.

The subrepository state from the working copies parent is compared
with the state calculated as a result of trying to commit the
subrepositories. If the two states are the same, then return None
otherwise the commit is just done.

The line: "committing subrepository x" will be written if there is
nothing committed, but .hgsubstate is dirty for x subrepository.

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > graphlog=
  > rebase=
  > 
  > [alias]
  > tglog = log -G --template "{rev}: '{desc}' {branches}\n"
  > EOF


  $ hg init a
  $ cd a

  $ echo A > A
  $ hg ci -Am A
  adding A

  $ echo B > B
  $ hg ci -Am B
  adding B

  $ hg up -q -C 0

  $ echo C > C
  $ hg ci -Am C
  adding C
  created new head

  $ hg up -q -C 0

  $ echo D > D
  $ hg ci -Am D
  adding D
  created new head

  $ hg merge -r 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ hg ci -m E

  $ hg up -q -C 3

  $ echo F > F
  $ hg ci -Am F
  adding F
  created new head

  $ cd ..


Rebasing
B onto F - simple rebase:

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

  $ hg tglog
  @  5: 'F'
  |
  | o  4: 'E'
  |/|
  o |  3: 'D'
  | |
  | o  2: 'C'
  |/
  | o  1: 'B'
  |/
  o  0: 'A'
  
  $ hg rebase -s 1 -d 5
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @  5: 'B'
  |
  o  4: 'F'
  |
  | o  3: 'E'
  |/|
  o |  2: 'D'
  | |
  | o  1: 'C'
  |/
  o  0: 'A'
  
  $ cd ..


B onto D - intermediate point:

  $ hg clone -q -u . a a2
  $ cd a2

  $ hg rebase -s 1 -d 3
  saved backup bundle to $TESTTMP/a2/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @  5: 'B'
  |
  | o  4: 'F'
  |/
  | o  3: 'E'
  |/|
  o |  2: 'D'
  | |
  | o  1: 'C'
  |/
  o  0: 'A'
  
  $ cd ..


C onto F - skip of E:

  $ hg clone -q -u . a a3
  $ cd a3

  $ hg rebase -s 2 -d 5
  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @  4: 'C'
  |
  o  3: 'F'
  |
  o  2: 'D'
  |
  | o  1: 'B'
  |/
  o  0: 'A'
  
  $ cd ..


D onto C - rebase of a branching point (skip E):

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

  $ hg rebase -s 3 -d 2
  saved backup bundle to $TESTTMP/a4/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @  4: 'F'
  |
  o  3: 'D'
  |
  o  2: 'C'
  |
  | o  1: 'B'
  |/
  o  0: 'A'
  
  $ cd ..


E onto F - merged revision having a parent in ancestors of target:

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

  $ hg rebase -s 4 -d 5
  saved backup bundle to $TESTTMP/a5/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @    5: 'E'
  |\
  | o  4: 'F'
  | |
  | o  3: 'D'
  | |
  o |  2: 'C'
  |/
  | o  1: 'B'
  |/
  o  0: 'A'
  
  $ cd ..


D onto B - E maintains C as parent:

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

  $ hg rebase -s 3 -d 1
  saved backup bundle to $TESTTMP/a6/.hg/strip-backup/*-backup.hg (glob)

  $ hg tglog
  @  5: 'F'
  |
  | o  4: 'E'
  |/|
  o |  3: 'D'
  | |
  | o  2: 'C'
  | |
  o |  1: 'B'
  |/
  o  0: 'A'
  
  $ cd ..


These will fail (using --source):

E onto D - rebase onto an ancestor:

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

  $ hg rebase -s 4 -d 3
  abort: source is descendant of destination
  [255]

D onto E - rebase onto a descendant:

  $ hg rebase -s 3 -d 4
  abort: source is ancestor of destination
  [255]

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

  $ hg rebase -s 4 -d 1
  abort: cannot use revision 4 as base, result would have 3 parents
  [255]


These will abort gracefully (using --base):

E onto E - rebase onto same changeset:

  $ hg rebase -b 4 -d 4
  nothing to rebase
  [1]

E onto D - rebase onto an ancestor:

  $ hg rebase -b 4 -d 3
  nothing to rebase
  [1]

D onto E - rebase onto a descendant:

  $ hg rebase -b 3 -d 4
  nothing to rebase
  [1]