tests/test-graft.t

graft: don't drop the second parent on unsuccessful merge (issue3498)

This replicates the strategy of rebase, which postpones setparents and
duplicatecopies after checking the merge stats.

Without the second parent, resolve cannot redo merge.

Create a repo with some stuff in it:

  $ hg init a
  $ cd a
  $ echo a > a
  $ echo a > d
  $ echo a > e
  $ hg ci -qAm0
  $ echo b > a
  $ hg ci -m1 -u bar
  $ hg mv a b
  $ hg ci -m2
  $ hg cp b c
  $ hg ci -m3 -u baz
  $ echo b > d
  $ echo f > e
  $ hg ci -m4
  $ hg up -q 3
  $ echo b > e
  $ hg branch -q stable
  $ hg ci -m5
  $ hg merge -q default --tool internal:local
  $ hg branch -q default
  $ hg ci -m6
  $ hg phase --public 3
  $ hg phase --force --secret 6

  $ hg --config extensions.graphlog= log -G --template '{author}@{rev}.{phase}: {desc}\n'
  @    [e-mail]: 6
  |\
  | o  [e-mail]: 5
  | |
  o |  [e-mail]: 4
  |/
  o  [e-mail]: 3
  |
  o  [e-mail]: 2
  |
  o  [e-mail]: 1
  |
  o  [e-mail]: 0
  

Need to specify a rev:

  $ hg graft
  abort: no revisions specified
  [255]

Can't graft ancestor:

  $ hg graft 1 2
  skipping ancestor revision 1
  skipping ancestor revision 2
  [255]

Can't graft with dirty wd:

  $ hg up -q 0
  $ echo foo > a
  $ hg graft 1
  abort: outstanding uncommitted changes
  [255]
  $ hg revert a

Graft a rename:

  $ hg graft 2 -u foo
  grafting revision 2
  merging a and b to b
  $ hg export tip --git
  # HG changeset patch
  # User foo
  # Date 0 0
  # Node ID d2e44c99fd3f31c176ea4efb9eca9f6306c81756
  # Parent  68795b066622ca79a25816a662041d8f78f3cd9e
  2
  
  diff --git a/a b/b
  rename from a
  rename to b
  --- a/a
  +++ b/b
  @@ -1,1 +1,1 @@
  -a
  +b

Look for extra:source

  $ hg log --debug -r tip
  changeset:   7:d2e44c99fd3f31c176ea4efb9eca9f6306c81756
  tag:         tip
  phase:       draft
  parent:      0:68795b066622ca79a25816a662041d8f78f3cd9e
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    7:5d59766436fd8fbcd38e7bebef0f6eaf3eebe637
  user:        foo
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      b
  files-:      a
  extra:       branch=default
  extra:       source=5c095ad7e90f871700f02dd1fa5012cb4498a2d4
  description:
  2
  
  

Graft out of order, skipping a merge and a duplicate

  $ hg graft 1 5 4 3 'merge()' 2 -n
  skipping ungraftable merge revision 6
  skipping already grafted revision 2
  grafting revision 1
  grafting revision 5
  grafting revision 4
  grafting revision 3

  $ hg graft 1 5 4 3 'merge()' 2 --debug
  skipping ungraftable merge revision 6
  scanning for duplicate grafts
  skipping already grafted revision 2
  grafting revision 1
    searching for copies back to rev 1
    unmatched files in local:
     b
    all copies found (* = to merge, ! = divergent):
     b -> a *
    checking for directory renames
  resolving manifests
   overwrite: False, partial: False
   ancestor: 68795b066622, local: d2e44c99fd3f+, remote: 5d205f8b35b6
   b: local copied/moved to a -> m
  preserving b for resolve of b
  updating: b 1/1 files (100.00%)
  grafting revision 5
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 4c60f11aa304, local: d2e44c99fd3f+, remote: 97f8bfe72746
   e: remote is newer -> g
  updating: e 1/1 files (100.00%)
  getting e
  e
  grafting revision 4
    searching for copies back to rev 1
  resolving manifests
   overwrite: False, partial: False
   ancestor: 4c60f11aa304, local: 839a7e8fcf80+, remote: 9c233e8e184d
   e: versions differ -> m
   d: remote is newer -> g
  preserving e for resolve of e
  updating: d 1/2 files (50.00%)
  getting d
  updating: e 2/2 files (100.00%)
  picked tool 'internal:merge' for e (binary False symlink False)
  merging e
  my e@839a7e8fcf80+ other e@9c233e8e184d ancestor e@68795b066622
  warning: conflicts during merge.
  merging e incomplete! (edit conflicts, then use 'hg resolve --mark')
  abort: unresolved conflicts, can't continue
  (use hg resolve and hg graft --continue)
  [255]

Continue without resolve should fail:

  $ hg graft -c
  grafting revision 4
  abort: unresolved merge conflicts (see hg help resolve)
  [255]

Fix up:

  $ echo b > e
  $ hg resolve -m e

Continue with a revision should fail:

  $ hg graft -c 6
  abort: can't specify --continue and revisions
  [255]

Continue for real, clobber usernames

  $ hg graft -c -U
  grafting revision 4
  grafting revision 3

Compare with original:

  $ hg diff -r 6
  $ hg status --rev 0:. -C
  M d
  M e
  A b
    a
  A c
    a
  R a

View graph:

  $ hg --config extensions.graphlog= log -G --template '{author}@{rev}.{phase}: {desc}\n'
  @  [e-mail]: 3
  |
  o  [e-mail]: 4
  |
  o  [e-mail]: 5
  |
  o  [e-mail]: 2
  |
  | o    [e-mail]: 6
  | |\
  | | o  [e-mail]: 5
  | | |
  | o |  [e-mail]: 4
  | |/
  | o  [e-mail]: 3
  | |
  | o  [e-mail]: 2
  | |
  | o  [e-mail]: 1
  |/
  o  [e-mail]: 0
  
Graft again onto another branch should preserve the original source
  $ hg up -q 0
  $ echo 'g'>g
  $ hg add g
  $ hg ci -m 7
  created new head
  $ hg graft 7
  grafting revision 7

  $ hg log -r 7 --template '{rev}:{node}\n'
  7:d2e44c99fd3f31c176ea4efb9eca9f6306c81756
  $ hg log -r 2 --template '{rev}:{node}\n'
  2:5c095ad7e90f871700f02dd1fa5012cb4498a2d4

  $ hg log --debug -r tip
  changeset:   12:95adbe5de6b10f376b699ece9ed5a57cd7b4b0f6
  tag:         tip
  phase:       draft
  parent:      11:b592ea63bb0c19a6c5c44685ee29a2284f9f1b8f
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    12:9944044f82a462bbaccc9bdf7e0ac5b811db7d1b
  user:        foo
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      b
  files-:      a
  extra:       branch=default
  extra:       source=5c095ad7e90f871700f02dd1fa5012cb4498a2d4
  description:
  2
  
  
Disallow grafting an already grafted cset onto its original branch
  $ hg up -q 6
  $ hg graft 7
  skipping already grafted revision 7 (was grafted from 2)
  [255]

Disallow grafting already grafted csets with the same origin onto each other
  $ hg up -q 12
  $ hg graft 2
  skipping already grafted revision 2
  [255]
  $ hg graft 7
  skipping already grafted revision 7 (same origin 2)
  [255]

  $ hg up -q 7
  $ hg graft 2
  skipping already grafted revision 2
  [255]
  $ hg graft tip
  skipping already grafted revision 12 (same origin 2)
  [255]

Resolve conflicted graft
  $ hg up -q 0
  $ echo b > a
  $ hg ci -m 8
  created new head
  $ echo a > a
  $ hg ci -m 9
  $ hg graft 1 --tool internal:fail
  grafting revision 1
  abort: unresolved conflicts, can't continue
  (use hg resolve and hg graft --continue)
  [255]
  $ hg resolve --all
  merging a
  $ hg graft -c
  grafting revision 1
  $ hg export tip --git
  # HG changeset patch
  # User bar
  # Date 0 0
  # Node ID 64ecd9071ce83c6e62f538d8ce7709d53f32ebf7
  # Parent  4bdb9a9d0b84ffee1d30f0dfc7744cade17aa19c
  1
  
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -a
  +b

Resolve conflicted graft with rename
  $ echo c > a
  $ hg ci -m 10
  $ hg graft 2 --tool internal:fail
  grafting revision 2
  abort: unresolved conflicts, can't continue
  (use hg resolve and hg graft --continue)
  [255]
  $ hg resolve --all
  merging a and b to b
  $ hg graft -c
  grafting revision 2
  $ hg export tip --git
  # HG changeset patch
  # User test
  # Date 0 0
  # Node ID 2e80e1351d6ed50302fe1e05f8bd1d4d412b6e11
  # Parent  e5a51ae854a8bbaaf25cc5c6a57ff46042dadbb4
  2
  
  diff --git a/a b/b
  rename from a
  rename to b