narrow: show repo corruption when commiting empty files

Differential Revision: https://phab.mercurial-scm.org/D11399

tests/test-narrow-commit.t

@@ -1,106 +1,118 b''
 #testcases flat tree
 
   $ . "$TESTDIR/narrow-library.sh"
 
 #if tree
   $ cat << EOF >> $HGRCPATH
   > [experimental]
   > treemanifest = 1
   > EOF
 #endif
 
 create full repo
 
   $ hg init master
   $ cd master
 
   $ mkdir inside
   $ echo inside > inside/f1
   $ mkdir outside
   $ echo outside > outside/f1
   $ hg ci -Aqm 'initial'
 
   $ echo modified > inside/f1
   $ hg ci -qm 'modify inside'
 
   $ echo modified > outside/f1
   $ hg ci -qm 'modify outside'
 
   $ cd ..
 
 (The lfs extension does nothing here, but this test ensures that its hook that
 determines whether to add the lfs requirement, respects the narrow boundaries.)
 
   $ hg --config extensions.lfs= clone --narrow ssh://user@dummy/master narrow \
   >    --include inside
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 2 changes to 1 files
   new changesets *:* (glob)
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd narrow
 
   $ hg update -q 0
 
 Can not modify dirstate outside
 
   $ mkdir outside
   $ touch outside/f1
   $ hg debugwalk -v -I 'relglob:f1'
   * matcher:
   <includematcher includes='(?:|.*/)f1(?:/|$)'>
   f  inside/f1  inside/f1
   $ hg add .
   $ hg add outside/f1
   abort: cannot track 'outside/f1' - it is outside the narrow clone
   [255]
   $ touch outside/f3
   $ hg add outside/f3
   abort: cannot track 'outside/f3' - it is outside the narrow clone
   [255]
 
 But adding a truly excluded file shouldn't count
 
   $ hg add outside/f3 -X outside/f3
 
   $ rm -r outside
 
 Can modify dirstate inside
 
   $ echo modified > inside/f1
   $ touch inside/f3
   $ hg add inside/f3
   $ hg status
   M inside/f1
   A inside/f3
   $ hg revert -qC .
   $ rm inside/f3
 
 Can commit changes inside. Leaves outside unchanged.
 
   $ hg update -q 'desc("initial")'
   $ echo modified2 > inside/f1
   $ hg manifest --debug
   4d6a634d5ba06331a60c29ee0db8412490a54fcd 644   inside/f1
   7fb3bb6356d28d4dc352c5ba52d7350a81b6bd46 644   outside/f1 (flat !)
   d0f2f706468ab0e8bec7af87446835fb1b13511b 755 d outside/ (tree !)
   $ hg commit -m 'modify inside/f1'
   created new head
   $ hg files -r .
   inside/f1
   $ hg manifest --debug
   3f4197b4a11b9016e77ebc47fe566944885fd11b 644   inside/f1
   7fb3bb6356d28d4dc352c5ba52d7350a81b6bd46 644   outside/f1 (flat !)
   d0f2f706468ab0e8bec7af87446835fb1b13511b 755 d outside/ (tree !)
 Some filesystems (notably FAT/exFAT only store timestamps with 2
 seconds of precision, so by sleeping for 3 seconds, we can ensure that
 the timestamps of files stored by dirstate will appear older than the
 dirstate file, and therefore we'll be able to get stable output from
 debugdirstate. If we don't do this, the test can be slightly flaky.
   $ sleep 3
   $ hg status
   $ hg debugdirstate --no-dates
   n 644         10 set                 inside/f1
+
+Can't commit empty files
+
+  $ touch inside/c; hg add inside/c; hg commit -qm _; hg verify -q
+   warning: revlog 'data/inside/c.i' not in fncache!
+   4: empty or missing inside/c
+   inside/c@4: manifest refers to unknown revision 000000000000
+  1 warnings encountered!
+  hint: run "hg debugrebuildfncache" to recover from corrupt fncache
+  2 integrity errors encountered!
+  (first damaged changeset appears to be 4)
+  [1]