[PATCH] test: prevent test-hup to hang forever if the transaction does not start

[pierre-yves.david at ens-lyon.org]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at fb.com>
# Date 1396422081 25200
#      Wed Apr 02 00:01:21 2014 -0700
# Node ID 108f59ec681455498e7fd32410554241f2ec82b5
# Parent  9e9e3a4e9261d31318f0f177538636370c50fe57
test: prevent test-hup to hang forever if the transaction does not start

If the transaction fails to start because of some programing errors, the test
would stay stuck in this while loop forever.

We now added a basic safeguard that abort the loop if nothing happen in 10
seconds. 10 seconds sounds enough to let the server catch up and open a
transaction.

diff --git a/tests/test-hup.t b/tests/test-hup.t
--- a/tests/test-hup.t
+++ b/tests/test-hup.t
@@ -9,11 +9,20 @@ Test hangup signal in the middle of tran
 Do test while holding fifo open
 
   $ (
   > echo lock
   > echo addchangegroup
-  > while [ ! -s .hg/store/journal ]; do sleep 0; done
+  > start=`date +%s`
+  > # 10 second seems much enough to let the server catch up
+  > deadline=`expr $start + 10`
+  > while [ ! -s .hg/store/journal ]; do
+  >     sleep 0;
+  >     if [ `date +%s` -gt $deadline ]; then
+  >         echo "transaction did not started after 10 seconds" >&2;
+  >         exit 1;
+  >     fi
+  > done
   > kill -HUP $P
   > ) > p
 
   $ wait
   $ cat out