rebase: provides test case for (issue5610) stable

rebase: provides test case for (issue5610)

The 4.2 release introduces a regression regarding the behavior of rebase with
some hook failures. We add the tests from the bug report from Henrik Stuart to
our test base to prevent further regression on this.

--- a/tests/test-rebase-interruptions.t	Tue Jun 27 17:40:24 2017 +0200
+++ b/tests/test-rebase-interruptions.t	Tue Jun 27 17:45:58 2017 +0200
@@ -271,4 +271,56 @@
   |/
   o  0:public 'A'
   
+
+Test rebase interrupted by hooks (pretxncommit)
+
+  $ hg up 2
+  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  $ echo F > F
+  $ hg add F
+  $ hg ci -m F
+  $ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.pretxncommit=hg log -r $HG_NODE | grep "summary:     C"'
+  rebasing 2:965c486023db "C"
+  summary:     C
+  rebasing 6:a0b2430ebfb8 "F" (tip)
+  transaction abort!
+  rollback completed
+  abort: pretxncommit hook exited with status 1
+  [255]
+  $ hg tglogp
+  @  7:secret 'C'
+  |
+  | @  6:secret 'F'
+  | |
+  o |  5:public 'B'
+  | |
+  o |  4:public 'E'
+  | |
+  o |  3:public 'D'
+  | |
+  | o  2:secret 'C'
+  | |
+  | o  1:public 'B'
+  |/
+  o  0:public 'A'
+  
+  $ hg rebase --continue
+  already rebased 2:965c486023db "C" as 401ccec5e39f
+  rebasing 6:a0b2430ebfb8 "F"
+  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/965c486023db-aa6250e7-backup.hg (glob)
+  $ hg tglogp
+  @  6:secret 'F'
+  |
+  o  5:secret 'C'
+  |
+  o  4:public 'B'
+  |
+  o  3:public 'E'
+  |
+  o  2:public 'D'
+  |
+  | o  1:public 'B'
+  |/
+  o  0:public 'A'
+  
   $ cd ..