From: Tomi Ollila <tomi.ollila@iki.fi>
Date: Sun, 29 Mar 2015 15:30:36 +0000 (+0300)
Subject: test/thread-order: more robust loop exit in case of broken input
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=3d1483df12050dec8a2df95249576162a0e79302;p=notmuch.git

test/thread-order: more robust loop exit in case of broken input

When creating $THREADS data it may end of not having 'None' at all
or the numbers in line output yields a loop.

To avoid loop the value in current array index is set to 'None'
so that if the same item is reached again the loop will end.

Also empty string as next array index will end the loop.
---

diff --git a/test/T260-thread-order.sh b/test/T260-thread-order.sh
index 99f58336..5239bd44 100755
--- a/test/T260-thread-order.sh
+++ b/test/T260-thread-order.sh
@@ -45,9 +45,12 @@ for ((n = 0; n < 4; n++)); do
     while read -a parents; do
         references=""
         parent=${parents[$n]}
-        while [[ $parent != None ]]; do
+        while [[ ${parent:-None} != None ]]; do
             references="<m$parent@t$thread> $references"
+            pp=$parent
             parent=${parents[$parent]}
+            # Avoid looping over broken input (if ever)
+            parents[$pp]="None"
         done
 
         generate_message \