$ cat <<EOF > merge

  > import sys, os

  > 

  > try:

  >     import msvcrt

  >     msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)

  >     msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)

  > except ImportError:

  >     pass

  > 

  > print "merging for", os.path.basename(sys.argv[1])

  > EOF

  $ HGMERGE="python ../merge"; export HGMERGE

  $ hg init t

  $ cd t

  $ echo This is file a1 > a

  $ hg add a

  $ hg commit -m "commit #0"

  $ echo This is file b1 > b

  $ hg add b

  $ hg commit -m "commit #1"

  $ hg update 0

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

Test interrupted updates by exploiting our non-handling of directory collisions

  $ mkdir b

  $ hg up

  abort: *: '$TESTTMP/t/b' (glob)

  [255]

  $ hg ci

  abort: last update was interrupted

  (use 'hg update' to get a consistent checkout)

  [255]

  $ hg sum

  parent: 0:538afb845929 

   commit #0

  branch: default

  commit: (interrupted update)

  update: 1 new changesets (update)

  phases: 2 draft

  $ rmdir b

  $ hg up

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg sum

  parent: 1:b8bb4a988f25 tip

   commit #1

  branch: default

  commit: (clean)

  update: (current)

  phases: 2 draft

Prepare a basic merge

  $ hg up 0

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo This is file c1 > c

  $ hg add c

  $ hg commit -m "commit #2"

  created new head

  $ echo This is file b1 > b

no merges expected

  $ hg merge -P 1

  changeset:   1:b8bb4a988f25

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     commit #1

  $ hg merge 1

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg diff --nodates

  diff -r 49035e18a8e6 b

  --- /dev/null

  +++ b/b

  @@ -0,0 +1,1 @@

  +This is file b1

  $ hg status

  M b

  $ cd ..; rm -r t

  $ hg init t

  $ cd t

  $ echo This is file a1 > a

  $ hg add a

  $ hg commit -m "commit #0"

  $ echo This is file b1 > b

  $ hg add b

  $ hg commit -m "commit #1"

  $ hg update 0

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ echo This is file c1 > c

  $ hg add c

  $ hg commit -m "commit #2"

  created new head

  $ echo This is file b2 > b

merge should fail

  $ hg merge 1

  b: untracked file differs

  abort: untracked files in working directory differ from files in requested revision

  [255]

#if symlink

symlinks to directories should be treated as regular files (issue5027)

  $ rm b

  $ ln -s 'This is file b2' b

  $ hg merge 1

  b: untracked file differs

  abort: untracked files in working directory differ from files in requested revision

  [255]

symlinks shouldn't be followed

  $ rm b

  $ echo This is file b1 > .hg/b

  $ ln -s .hg/b b

  $ hg merge 1

  b: untracked file differs

  abort: untracked files in working directory differ from files in requested revision

  [255]

  $ rm b

  $ echo This is file b2 > b

#endif

bad config

  $ hg merge 1 --config merge.checkunknown=x

  abort: merge.checkunknown not valid ('x' is none of 'abort', 'ignore', 'warn')

  [255]

this merge should fail

  $ hg merge 1 --config merge.checkunknown=abort

  b: untracked file differs

  abort: untracked files in working directory differ from files in requested revision

  [255]

this merge should warn

  $ hg merge 1 --config merge.checkunknown=warn

  b: replacing untracked file

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ cat b.orig

  This is file b2

  $ hg up --clean 2

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ mv b.orig b

this merge should silently ignore

  $ cat b

  This is file b2

  $ hg merge 1 --config merge.checkunknown=ignore

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ cat b.orig

  This is file b2

  $ hg up --clean 2

  $ mv b.orig b

this merge of b should work

  $ cat b

  This is file b2

  $ hg merge -f 1

  merging b

  merging for b

  0 files updated, 1 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg diff --nodates

  diff -r 49035e18a8e6 b

  --- /dev/null

  +++ b/b

  @@ -0,0 +1,1 @@

  +This is file b2

  $ hg status

  M b

  $ cd ..; rm -r t

  $ hg init t

  $ cd t

  $ echo This is file a1 > a

  $ hg add a

  $ hg commit -m "commit #0"

  $ echo This is file b1 > b

  $ hg add b

  $ hg commit -m "commit #1"

  $ echo This is file b22 > b

  $ hg commit -m "commit #2"

  $ hg update 1

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo This is file c1 > c

  $ hg add c

  $ hg commit -m "commit #3"

  created new head

Contents of b should be "this is file b1"

  $ cat b

  This is file b1

  $ echo This is file b22 > b

merge fails

  $ hg merge 2

  abort: uncommitted changes

  (use 'hg status' to list changes)

  [255]

merge expected!

  $ hg merge -f 2

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg diff --nodates

  diff -r 85de557015a8 b

  --- a/b

  +++ b/b

  @@ -1,1 +1,1 @@

  -This is file b1

  +This is file b22

  $ hg status

  M b

  $ cd ..; rm -r t

  $ hg init t

  $ cd t

  $ echo This is file a1 > a

  $ hg add a

  $ hg commit -m "commit #0"

  $ echo This is file b1 > b

  $ hg add b

  $ hg commit -m "commit #1"

  $ echo This is file b22 > b

  $ hg commit -m "commit #2"

  $ hg update 1

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo This is file c1 > c

  $ hg add c

  $ hg commit -m "commit #3"

  created new head

  $ echo This is file b33 > b

merge of b should fail

  $ hg merge 2

  abort: uncommitted changes

  (use 'hg status' to list changes)

  [255]

merge of b expected

  $ hg merge -f 2

  merging b

  merging for b

  0 files updated, 1 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg diff --nodates

  diff -r 85de557015a8 b

  --- a/b

  +++ b/b

  @@ -1,1 +1,1 @@

  -This is file b1

  +This is file b33

  $ hg status

  M b

Test for issue2364

  $ hg up -qC .

  $ hg rm b

  $ hg ci -md

  $ hg revert -r -2 b

  $ hg up -q -- -2

Test that updated files are treated as "modified", when

'merge.update()' is aborted before 'merge.recordupdates()' (= parents

aren't changed), even if none of mode, size and timestamp of them

isn't changed on the filesystem (see also issue4583).

  $ cat > $TESTTMP/abort.py <<EOF

  > # emulate aborting before "recordupdates()". in this case, files

  > # are changed without updating dirstate

  > from mercurial import extensions, merge, error

  > def applyupdates(orig, *args, **kwargs):

  >     orig(*args, **kwargs)

  >     raise error.Abort('intentional aborting')

  > def extsetup(ui):

  >     extensions.wrapfunction(merge, "applyupdates", applyupdates)

  > EOF

  $ cat >> .hg/hgrc <<EOF

  > [fakedirstatewritetime]

  > # emulate invoking dirstate.write() via repo.status()

  > # at 2000-01-01 00:00

  > fakenow = 200001010000

  > EOF

(file gotten from other revision)

  $ hg update -q -C 2

  $ echo 'THIS IS FILE B5' > b

  $ hg commit -m 'commit #5'

  $ hg update -q -C 3

  $ cat b

  This is file b1

  $ touch -t 200001010000 b

  $ hg debugrebuildstate

  $ cat >> .hg/hgrc <<EOF

  > [extensions]

  > fakedirstatewritetime = $TESTDIR/fakedirstatewritetime.py

  > abort = $TESTTMP/abort.py

  > EOF

  $ hg merge 5

  abort: intentional aborting

  [255]

  $ cat >> .hg/hgrc <<EOF

  > [extensions]

  > fakedirstatewritetime = !

  > abort = !

  > EOF

  $ cat b

  THIS IS FILE B5

  $ touch -t 200001010000 b