test-contrib: add a test for shrink-revlog

We only verify the extension runs and that verify passes at the end as
constructing a test repository that would result in a shrink would be
nontrivial.

tests/test-contrib.t

@@ -1,279 +1,302 b''
 Set vars:
 
   $ CONTRIBDIR=$TESTDIR/../contrib
 
 Prepare repo-a:
 
   $ hg init repo-a
   $ cd repo-a
 
   $ echo this is file a > a
   $ hg add a
   $ hg commit -m first
 
   $ echo adding to file a >> a
   $ hg commit -m second
 
   $ echo adding more to file a >> a
   $ hg commit -m third
 
   $ hg verify
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   1 files, 3 changesets, 3 total revisions
 
 Dumping revlog of file a to stdout:
 
   $ python $CONTRIBDIR/dumprevlog .hg/store/data/a.i
   file: .hg/store/data/a.i
   node: 183d2312b35066fb6b3b449b84efc370d50993d0
   linkrev: 0
   parents: 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
   length: 15
   -start-
   this is file a
   
   -end-
   node: b1047953b6e6b633c0d8197eaa5116fbdfd3095b
   linkrev: 1
   parents: 183d2312b35066fb6b3b449b84efc370d50993d0 0000000000000000000000000000000000000000
   length: 32
   -start-
   this is file a
   adding to file a
   
   -end-
   node: 8c4fd1f7129b8cdec6c7f58bf48fb5237a4030c1
   linkrev: 2
   parents: b1047953b6e6b633c0d8197eaa5116fbdfd3095b 0000000000000000000000000000000000000000
   length: 54
   -start-
   this is file a
   adding to file a
   adding more to file a
   
   -end-
 
 Dump all revlogs to file repo.dump:
 
   $ find .hg/store -name "*.i" | sort | xargs python $CONTRIBDIR/dumprevlog > ../repo.dump
   $ cd ..
 
 Undumping into repo-b:
 
   $ hg init repo-b
   $ cd repo-b
   $ python $CONTRIBDIR/undumprevlog < ../repo.dump
   .hg/store/00changelog.i
   .hg/store/00manifest.i
   .hg/store/data/a.i
   $ cd ..
 
 Rebuild fncache with clone --pull:
 
   $ hg clone --pull -U repo-b repo-c
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 1 files
 
 Verify:
 
   $ hg -R repo-c verify
   checking changesets
   checking manifests
   crosschecking files in changesets and manifests
   checking files
   1 files, 3 changesets, 3 total revisions
 
 Compare repos:
 
   $ hg -R repo-c incoming repo-a
   comparing with repo-a
   searching for changes
   no changes found
   [1]
 
   $ hg -R repo-a incoming repo-c
   comparing with repo-c
   searching for changes
   no changes found
   [1]
 
 
+Test shrink-revlog:
+  $ cd repo-a
+  $ hg --config extensions.shrink=$CONTRIBDIR/shrink-revlog.py shrink
+  shrinking $TESTTMP/repo-a/.hg/store/00manifest.i
+  reading revs
+  sorting revs
+  writing revs
+  old file size:          324 bytes (   0.0 MiB)
+  new file size:          324 bytes (   0.0 MiB)
+  shrinkage: 0.0% (1.0x)
+  note: old revlog saved in:
+    $TESTTMP/repo-a/.hg/store/00manifest.i.old
+    $TESTTMP/repo-a/.hg/store/00manifest.d.old
+  (You can delete those files when you are satisfied that your
+  repository is still sane.  Running 'hg verify' is strongly recommended.)
+  $ hg verify
+  checking changesets
+  checking manifests
+  crosschecking files in changesets and manifests
+  checking files
+  1 files, 3 changesets, 3 total revisions
+  $ cd ..
+
 Test simplemerge command:
 
   $ cp "$CONTRIBDIR/simplemerge" .
   $ echo base > base
   $ echo local > local
   $ cat base >> local
   $ cp local orig
   $ cat base > other
   $ echo other >> other
 
 changing local directly
 
   $ python simplemerge local base other && echo "merge succeeded"
   merge succeeded
   $ cat local
   local
   base
   other
   $ cp orig local
 
 printing to stdout
 
   $ python simplemerge -p local base other
   local
   base
   other
 
 local:
 
   $ cat local
   local
   base
 
 conflicts
 
   $ cp base conflict-local
   $ cp other conflict-other
   $ echo not other >> conflict-local
   $ echo end >> conflict-local
   $ echo end >> conflict-other
   $ python simplemerge -p conflict-local base conflict-other
   base
   <<<<<<< conflict-local
   not other
   =======
   other
   >>>>>>> conflict-other
   end
   warning: conflicts during merge.
   [1]
 
 --no-minimal
 
   $ python simplemerge -p --no-minimal conflict-local base conflict-other
   base
   <<<<<<< conflict-local
   not other
   end
   =======
   other
   end
   >>>>>>> conflict-other
   warning: conflicts during merge.
   [1]
 
 1 label
 
   $ python simplemerge -p -L foo conflict-local base conflict-other
   base
   <<<<<<< foo
   not other
   =======
   other
   >>>>>>> conflict-other
   end
   warning: conflicts during merge.
   [1]
 
 2 labels
 
   $ python simplemerge -p -L foo -L bar conflict-local base conflict-other
   base
   <<<<<<< foo
   not other
   =======
   other
   >>>>>>> bar
   end
   warning: conflicts during merge.
   [1]
 
 too many labels
 
   $ python simplemerge -p -L foo -L bar -L baz conflict-local base conflict-other
   abort: can only specify two labels.
   [255]
 
 binary file
 
   $ python -c "f = file('binary-local', 'w'); f.write('\x00'); f.close()"
   $ cat orig >> binary-local
   $ python simplemerge -p binary-local base other
   abort: binary-local looks like a binary file.
   [255]
 
 binary file --text
 
   $ python simplemerge -a -p binary-local base other 2>&1
   warning: binary-local looks like a binary file.
   \x00local (esc)
   base
   other
 
 help
 
   $ python simplemerge --help
   simplemerge [OPTS] LOCAL BASE OTHER
   
       Simple three-way file merge utility with a minimal feature set.
   
       Apply to LOCAL the changes necessary to go from BASE to OTHER.
   
       By default, LOCAL is overwritten with the results of this operation.
   
   options:
    -L --label       labels to use on conflict markers
    -a --text        treat all files as text
    -p --print       print results instead of overwriting LOCAL
       --no-minimal  do not try to minimize conflict regions
    -h --help        display help and exit
    -q --quiet       suppress output
 
 wrong number of arguments
 
   $ python simplemerge
   simplemerge: wrong number of arguments
   simplemerge [OPTS] LOCAL BASE OTHER
   
       Simple three-way file merge utility with a minimal feature set.
   
       Apply to LOCAL the changes necessary to go from BASE to OTHER.
   
       By default, LOCAL is overwritten with the results of this operation.
   
   options:
    -L --label       labels to use on conflict markers
    -a --text        treat all files as text
    -p --print       print results instead of overwriting LOCAL
       --no-minimal  do not try to minimize conflict regions
    -h --help        display help and exit
    -q --quiet       suppress output
   [1]
 
 bad option
 
   $ python simplemerge --foo -p local base other
   simplemerge: option --foo not recognized
   simplemerge [OPTS] LOCAL BASE OTHER
   
       Simple three-way file merge utility with a minimal feature set.
   
       Apply to LOCAL the changes necessary to go from BASE to OTHER.
   
       By default, LOCAL is overwritten with the results of this operation.
   
   options:
    -L --label       labels to use on conflict markers
    -a --text        treat all files as text
    -p --print       print results instead of overwriting LOCAL
       --no-minimal  do not try to minimize conflict regions
    -h --help        display help and exit
    -q --quiet       suppress output
   [1]