tests: make removeemptydirs more portable

The behavior of pwd change from one system (i.e. default shell/sh) from one
system to another so we use fuzzy matching for the output we do not care and we
use narrower command call to highlight what we are trying to test here.

Differential Revision: https://phab.mercurial-scm.org/D11449

tests/test-removeemptydirs.t

@@ -1,284 +1,300 b''
 Tests for experimental.removeemptydirs
 
+  $ cat >> pwd.py << EOF
+  > import os
+  > try:
+  >     print(os.getcwd())
+  > except OSError:
+  >     print("<directory is no longer accessible>")
+  > EOF
+
   $ NO_RM=--config=experimental.removeemptydirs=0
   $ DO_RM=--config=experimental.removeemptydirs=1
   $ isdir() { if [ -d $1 ]; then echo yes; else echo no; fi }
   $ isfile() { if [ -f $1 ]; then echo yes; else echo no; fi }
 
 `hg rm` of the last file in a directory:
   $ hg init hgrm
   $ cd hgrm
   $ mkdir somedir
   $ echo hi > somedir/foo
   $ hg ci -qAm foo
   $ isdir somedir
   yes
   $ hg rm somedir/foo
   $ isdir somedir
   no
   $ hg revert -qa
   $ isdir somedir
   yes
   $ hg $NO_RM rm somedir/foo
   $ isdir somedir
   yes
   $ ls somedir
   $ cd $TESTTMP
 
 `hg mv` of the last file in a directory:
   $ hg init hgmv
   $ cd hgmv
   $ mkdir somedir
   $ mkdir destdir
   $ echo hi > somedir/foo
   $ hg ci -qAm foo
   $ isdir somedir
   yes
   $ hg mv somedir/foo destdir/foo
   $ isdir somedir
   no
   $ hg revert -qa
 (revert doesn't get rid of destdir/foo?)
   $ rm destdir/foo
   $ isdir somedir
   yes
   $ hg $NO_RM mv somedir/foo destdir/foo
   $ isdir somedir
   yes
   $ ls somedir
   $ cd $TESTTMP
 
 Updating to a commit that doesn't have the directory:
   $ hg init hgupdate
   $ cd hgupdate
   $ echo hi > r0
   $ hg ci -qAm r0
   $ mkdir somedir
   $ echo hi > somedir/foo
   $ hg ci -qAm r1
   $ isdir somedir
   yes
   $ hg co -q -r ".^"
   $ isdir somedir
   no
   $ hg co -q tip
   $ isdir somedir
   yes
   $ hg $NO_RM co -q -r ".^"
   $ isdir somedir
   yes
   $ ls somedir
   $ cd $TESTTMP
 
 Rebasing across a commit that doesn't have the directory, from inside the
 directory:
   $ hg init hgrebase
   $ cd hgrebase
   $ echo hi > r0
   $ hg ci -qAm r0
   $ mkdir somedir
   $ echo hi > somedir/foo
   $ hg ci -qAm first_rebase_source
   $ hg $NO_RM co -q -r ".^"
   $ echo hi > somedir/bar
   $ hg ci -qAm first_rebase_dest
   $ hg $NO_RM co -q -r ".^"
   $ echo hi > somedir/baz
   $ hg ci -qAm second_rebase_dest
   $ hg co -qr 'desc(first_rebase_source)'
   $ cd $TESTTMP/hgrebase/somedir
   $ hg --config extensions.rebase= rebase -qr . -d 'desc(first_rebase_dest)'
   current directory was removed (rmcwd !)
   (consider changing to repo root: $TESTTMP/hgrebase) (rmcwd !)
   $ cd $TESTTMP/hgrebase/somedir
 (The current node is the rebased first_rebase_source on top of
 first_rebase_dest)
 This should not output anything about current directory being removed:
   $ hg $NO_RM --config extensions.rebase= rebase -qr . -d 'desc(second_rebase_dest)'
   $ cd $TESTTMP
 
 Histediting across a commit that doesn't have the directory, from inside the
 directory (reordering nodes):
 
 A directory with the right pass exists at the end of the run, but it is a
 different directory than the current one.
 
 Windows is not affected
 
   $ hg init hghistedit
   $ cd hghistedit
   $ echo hi > r0
   $ hg ci -qAm r0
   $ echo hi > r1
   $ hg ci -qAm r1
   $ echo hi > r2
   $ hg ci -qAm r2
   $ mkdir somedir
   $ echo hi > somedir/foo
   $ hg ci -qAm migrating_revision
   $ cat > histedit_commands <<EOF
   > pick 89079fab8aee 0 r0
   > pick e6d271df3142 1 r1
   > pick 89e25aa83f0f 3 migrating_revision
   > pick b550aa12d873 2 r2
   > EOF
   $ cd $TESTTMP/hghistedit/somedir
   $ hg $DO_RM --config extensions.histedit= histedit -q --commands ../histedit_commands
   current directory was removed (no-windows !)
   (consider changing to repo root: $TESTTMP/hghistedit) (no-windows !)
   $ ls -1 $TESTTMP/hghistedit/
   histedit_commands
   r0
   r1
   r2
   somedir
-  $ pwd
+#if windows
+  $ "$PYTHON" "$TESTTMP/pwd.py"
   $TESTTMP/hghistedit/somedir
+#else
+  $ echo ${PWD} # no-pwd-check
+  $TESTTMP/hghistedit/somedir
+  $ "$PYTHON" "$TESTTMP/pwd.py"
+  <directory is no longer accessible>
+#endif
   $ ls -1 $TESTTMP/hghistedit/somedir
   foo
   $ ls -1
   foo (windows !)
 
 Get out of the doomed directory
 
   $ cd $TESTTMP/hghistedit
+  chdir: error retrieving current directory: getcwd: cannot access parent directories: $ENOENT$ (?)
   $ hg files --rev . | grep somedir/
   somedir/foo
 
 
   $ cat > histedit_commands <<EOF
   > pick 89079fab8aee 0 r0
   > pick 7c7a22c6009f 3 migrating_revision
   > pick e6d271df3142 1 r1
   > pick 40a53c2d4276 2 r2
   > EOF
   $ cd $TESTTMP/hghistedit/somedir
   $ hg $NO_RM --config extensions.histedit= histedit -q --commands ../histedit_commands
 Regardless of system, we should always get a 'yes' here.
   $ isfile foo
   yes
   $ cd $TESTTMP
 
 This is essentially the exact test from issue5826, just cleaned up a little:
 
   $ hg init issue5826_withrm
   $ cd issue5826_withrm
 
 Let's only turn this on for this repo so that we don't contaminate later tests.
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > histedit =
   > EOF
 Commit three revisions that each create a directory:
 
   $ mkdir foo
   $ touch foo/bar
   $ hg commit -qAm "add foo"
 
   $ mkdir bar
   $ touch bar/bar
   $ hg commit -qAm "add bar"
 
   $ mkdir baz
   $ touch baz/bar
   $ hg commit -qAm "add baz"
 
 Enter the first directory:
 
   $ cd foo
 
 Histedit doing 'pick, pick, fold':
 
 #if rmcwd
 
   $ hg histedit --commands - <<EOF
   > pick 6274c77c93c3 1 add bar
   > pick ff70a87b588f 0 add foo
   > fold 9992bb0ac0db 2 add baz
   > EOF
   current directory was removed
   (consider changing to repo root: $TESTTMP/issue5826_withrm)
   abort: $ENOENT$
   [255]
 
 Go back to the repo root after losing it as part of that operation:
   $ cd $TESTTMP/issue5826_withrm
 
 Note the lack of a non-zero exit code from this function - it exits
 successfully, but doesn't really do anything.
   $ hg histedit --continue
   9992bb0ac0db: cannot fold - working copy is not a descendant of previous commit 5c806432464a
   saved backup bundle to $TESTTMP/issue5826_withrm/.hg/strip-backup/ff70a87b588f-e94f9789-histedit.hg
 
   $ hg log -T '{rev}:{node|short} {desc}\n'
   2:94e3f9fae1d6 fold-temp-revision 9992bb0ac0db
   1:5c806432464a add foo
   0:d17db4b0303a add bar
 
 #else
 
   $ cd $TESTTMP/issue5826_withrm
 
   $ hg histedit --commands - <<EOF
   > pick 6274c77c93c3 1 add bar
   > pick ff70a87b588f 0 add foo
   > fold 9992bb0ac0db 2 add baz
   > EOF
   saved backup bundle to $TESTTMP/issue5826_withrm/.hg/strip-backup/5c806432464a-cd4c8d86-histedit.hg
 
   $ hg log -T '{rev}:{node|short} {desc}\n'
   1:b9eddaa97cbc add foo
   ***
   add baz
   0:d17db4b0303a add bar
 
 #endif
 
 Now test that again with experimental.removeemptydirs=false:
   $ hg init issue5826_norm
   $ cd issue5826_norm
 
 Let's only turn this on for this repo so that we don't contaminate later tests.
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > histedit =
   > [experimental]
   > removeemptydirs = false
   > EOF
 Commit three revisions that each create a directory:
 
   $ mkdir foo
   $ touch foo/bar
   $ hg commit -qAm "add foo"
 
   $ mkdir bar
   $ touch bar/bar
   $ hg commit -qAm "add bar"
 
   $ mkdir baz
   $ touch baz/bar
   $ hg commit -qAm "add baz"
 
 Enter the first directory:
 
   $ cd foo
 
 Histedit doing 'pick, pick, fold':
 
   $ hg histedit --commands - <<EOF
   > pick 6274c77c93c3 1 add bar
   > pick ff70a87b588f 0 add foo
   > fold 9992bb0ac0db 2 add baz
   > EOF
   saved backup bundle to $TESTTMP/issue5826_withrm/issue5826_norm/.hg/strip-backup/5c806432464a-cd4c8d86-histedit.hg
 
 Note the lack of a 'cd' being necessary here, and we don't need to 'histedit
 --continue'
 
   $ hg log -T '{rev}:{node|short} {desc}\n'
   1:b9eddaa97cbc add foo
   ***
   add baz
   0:d17db4b0303a add bar
 
   $ cd $TESTTMP