tests: conditionalize an error message about unlinking a non empty directory

The message on Windows comes from win32.unlink().  It looks like os.unlink() on
posix platforms is a simple call to unlink(3), which turns into unlinkat(2).
Since there's a comment in one of the tests that the message should be improved,
I don't think it's worth adding a check in win32.unlink() to see if it's empty,
if that function is always going to fail on a directory.  (It seems like the
POSIX spec allows unlinking directories though.)

tests/test-merge1.t

@@ -1,431 +1,432 b''
   $ cat <<EOF > merge
   > from __future__ import print_function
   > 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 having a non-empty dir with the same name as one
 of the files in a commit we're updating to
 
   $ mkdir b && touch b/nonempty
   $ hg up
-  abort: Directory not empty: '$TESTTMP/t/b'
+  abort: Unlinking directory not permitted: '$TESTTMP/t/b' (windows !)
+  abort: Directory not empty: '$TESTTMP/t/b' (no-windows !)
   [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: 1 unknown (interrupted update)
   update: 1 new changesets (update)
   phases: 2 draft
 
   $ rm b/nonempty
 
   $ 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)
 
 merge.checkignored
   $ hg up --clean 1
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ cat >> .hgignore << EOF
   > remoteignored
   > EOF
   $ echo This is file localignored3 > localignored
   $ echo This is file remoteignored3 > remoteignored
   $ hg add .hgignore localignored remoteignored
   $ hg commit -m "commit #3"
 
   $ hg up 2
   1 files updated, 0 files merged, 4 files removed, 0 files unresolved
   $ cat >> .hgignore << EOF
   > localignored
   > EOF
   $ hg add .hgignore
   $ hg commit -m "commit #4"
 
 remote .hgignore shouldn't be used for determining whether a file is ignored
   $ echo This is file remoteignored4 > remoteignored
   $ hg merge 3 --config merge.checkignored=ignore --config merge.checkunknown=abort
   remoteignored: untracked file differs
   abort: untracked files in working directory differ from files in requested revision
   [255]
   $ hg merge 3 --config merge.checkignored=abort --config merge.checkunknown=ignore
   merging .hgignore
   merging for .hgignore
   3 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ cat remoteignored
   This is file remoteignored3
   $ cat remoteignored.orig
   This is file remoteignored4
   $ rm remoteignored.orig
 
 local .hgignore should be used for that
   $ hg up --clean 4
   1 files updated, 0 files merged, 3 files removed, 0 files unresolved
   $ echo This is file localignored4 > localignored
 also test other conflicting files to see we output the full set of warnings
   $ echo This is file b2 > b
   $ hg merge 3 --config merge.checkignored=abort --config merge.checkunknown=abort
   b: untracked file differs
   localignored: untracked file differs
   abort: untracked files in working directory differ from files in requested revision
   [255]
   $ hg merge 3 --config merge.checkignored=abort --config merge.checkunknown=ignore
   localignored: untracked file differs
   abort: untracked files in working directory differ from files in requested revision
   [255]
   $ hg merge 3 --config merge.checkignored=warn --config merge.checkunknown=abort
   b: untracked file differs
   abort: untracked files in working directory differ from files in requested revision
   [255]
   $ hg merge 3 --config merge.checkignored=warn --config merge.checkunknown=warn
   b: replacing untracked file
   localignored: replacing untracked file
   merging .hgignore
   merging for .hgignore
   3 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ cat localignored
   This is file localignored3
   $ cat localignored.orig
   This is file localignored4
   $ rm localignored.orig
 
   $ cat b.orig
   This is file b2
   $ hg up --clean 2
   0 files updated, 0 files merged, 4 files removed, 0 files unresolved
   $ 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
   > from __future__ import absolute_import
   > # emulate aborting before "recordupdates()". in this case, files
   > # are changed without updating dirstate
   > from mercurial import (
   >   error,
   >   extensions,
   >   merge,
   > )
   > 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
   $ hg status -A b
   M b
 
 (file merged from other revision)
 
   $ hg update -q -C 3
   $ echo 'this is file b6' > b
   $ hg commit -m 'commit #6'
   created new head
 
   $ cat b
   this is file b6
   $ touch -t 200001010000 b
   $ hg debugrebuildstate
 
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > fakedirstatewritetime = $TESTDIR/fakedirstatewritetime.py
   > abort = $TESTTMP/abort.py
   > EOF
   $ hg merge --tool internal:other 5
   abort: intentional aborting
   [255]
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > fakedirstatewritetime = !
   > abort = !
   > EOF
 
   $ cat b
   THIS IS FILE B5
   $ touch -t 200001010000 b
   $ hg status -A b
   M b
 
   $ cd ..

tests/test-update-names.t

@@ -1,92 +1,93 b''
 Test update logic when there are renames or weird same-name cases between dirs
 and files
 
 Update with local changes across a file rename
 
   $ hg init r1 && cd r1
 
   $ echo a > a
   $ hg add a
   $ hg ci -m a
 
   $ hg mv a b
   $ hg ci -m rename
 
   $ echo b > b
   $ hg ci -m change
 
   $ hg up -q 0
 
   $ echo c > a
 
   $ hg up
   merging a and b to b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges
   [1]
 
 Test update when local untracked directory exists with the same name as a
 tracked file in a commit we are updating to
   $ hg init r2 && cd r2
   $ echo root > root && hg ci -Am root  # rev 0
   adding root
   $ echo text > name && hg ci -Am "name is a file"  # rev 1
   adding name
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ mkdir name
   $ hg up 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Test update when local untracked directory exists with some files in it and has
 the same name a tracked file in a commit we are updating to. In future this
 should be updated to give an friendlier error message, but now we should just
 make sure that this does not erase untracked data
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ mkdir name
   $ echo text > name/file
   $ hg st
   ? name/file
   $ hg up 1
-  abort: Directory not empty: '$TESTTMP/r1/r2/name'
+  abort: Unlinking directory not permitted: '$TESTTMP/r1/r2/name' (windows !)
+  abort: Directory not empty: '$TESTTMP/r1/r2/name' (no-windows !)
   [255]
   $ cat name/file
   text
   $ cd ..
 
 #if symlink
 
 Test update when two commits have symlinks that point to different folders
   $ hg init r3 && cd r3
   $ echo root > root && hg ci -Am root
   adding root
   $ mkdir folder1 && mkdir folder2
   $ ln -s folder1 folder
   $ hg ci -Am "symlink to folder1"
   adding folder
   $ rm folder
   $ ln -s folder2 folder
   $ hg ci -Am "symlink to folder2"
   $ hg up 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd ..
 
 #endif
 
 #if rmcwd
 
 Test that warning is printed if cwd is deleted during update
   $ hg init r4 && cd r4
   $ mkdir dir
   $ cd dir
   $ echo a > a
   $ echo b > b
   $ hg add a b
   $ hg ci -m "file and dir"
   $ hg up -q null
   current directory was removed
   (consider changing to repo root: $TESTTMP/r1/r4)
 
 #endif