[LTP] [PATCH v3] runltp: add -R option for randomize test order

[Zorro Lang]

Generally we write test entries into runtests/${testfile}, then
runltp reads and runs lines sequentially everytime, nearly no one
will change the test order.

Recently we find bugs by change the test order，different test
combination maybe find more bugs. So I add this new option -R to
randomize test order.

Signed-off-by: Zorro Lang <zlang@redhat.com>
---

V2 use 'sort -R' to instead of 'randlines.awk'.
V3 remove change log and someone useless comment

Thanks,
Zorro

 runltp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/runltp b/runltp
index bb2e5d8..33e23ab 100755
--- a/runltp
+++ b/runltp
@@ -153,6 +153,7 @@ usage()
     -p              Human readable format logfiles.
     -q              Print less verbose output to screen.
     -r LTPROOT      Fully qualified path where testsuite is installed.
+    -R              Randomize test order.
     -s PATTERN      Only run test cases which match PATTERN.
     -S SKIPFILE     Skip tests specified in SKIPFILE
     -t DURATION     Execute the testsuite for given duration. Examples:
@@ -213,12 +214,13 @@ main()
     local EMAIL_TO=""
     local TAG_RESTRICT_STRING=""
     local PAN_COMMAND=""
+    local RANDOMRUN=0
     local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%m_%d-%Hh_%Mm_%Ss"`
     local scenfile=
 
     version_date=$(cat "$LTPROOT/Version")
 
-    while getopts a:c:C:T:d:D:f:F:ehi:I:K:g:l:m:M:Nno:pqr:s:S:t:T:w:x:b:B:z:Z: arg
+    while getopts a:c:C:T:d:D:f:F:ehi:I:K:g:l:m:M:Nno:pqr:Rs:S:t:T:w:x:b:B:z:Z: arg
     do  case $arg in
         a)  EMAIL_TO=$OPTARG
             ALT_EMAIL_OUT=1;;
@@ -410,6 +412,8 @@ main()
 
         r)  LTPROOT=$OPTARG;;
 
+        R)  RANDOMRUN=1;;
+
         s)  TAG_RESTRICT_STRING=$OPTARG;;
 
 	S)  case $OPTARG in
@@ -740,6 +744,11 @@ main()
          done
     fi
 
+    if [ "$RANDOMRUN" != "0" ]; then
+        sort -R ${TMP}/alltests > ${TMP}/alltests.temp
+        cat ${TMP}/alltests.temp > ${TMP}/alltests
+    fi
+
     [ ! -z "$QUIET_MODE" ] && { echo "INFO: Test start time: $(date)" ; }
     PAN_COMMAND="${LTPROOT}/bin/ltp-pan $QUIET_MODE -e -S $INSTANCES $DURATION -a $$ \
     -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE $TCONFCMDFILE"
-- 
2.7.4