tests/test-rebase-scenario-global.t

subrepo: lazily update git's local tracking branches

This continues the strategy of separation between hg pull and hg update in
git subrepos by only dealing with git's branches on an update. This behavior
tries to cover the bare essentials of the semantics of git pull in the subrepo
when the parent repo does hg pull and hg update.

  $ 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]