runtests: ensure all list cases are not cleared before testing

Shell read command will be cleared in the vm test, ensure all the test TODO list
are not cleared before testing, improve the TODO list way.

Signed-off-by: Pengfei Xu <[email protected]>

runtests

@@ -10,6 +10,8 @@ TESTS_CLIENT="tests-client"
 TESTS_SERVER="tests-server"
 TEST_FILES=""
 SUB_FOLDERS=""
+TEST_LIST_FILE="/tmp/tests"
+OLD_IFS=""
 
 usage() {
   cat << _EOF
@@ -100,20 +102,23 @@ runcmdfile() {
   local logfile=$2
   local subfolder=""
   local file_type=""
+  local lines=""
+  local line=""
 
   if [[ "$cmdfile" == *"/"* ]]; then
     subfolder=${cmdfile%/*}
   else
     echo "cmdfile:$cmdfile(no '/') is not in a subfolder!"
   fi
 
-  while read -r line; do
-    if grep -Eq "^#.*" <<< "$line" || grep -Eq "^$" <<< "$line"; then
-      continue
-    fi
-
+  grep -v "^#.*" "$cmdfile" | grep -v "^$" > "$TEST_LIST_FILE"
+  lines=$(cat $TEST_LIST_FILE)
+  OLD_IFS="$IFS"
+  IFS=$'\n'
+  for line in $lines; do
     runtest "$line" "$logfile" "$subfolder"
-  done < "$cmdfile"
+  done
+  IFS="$OLD_IFS"
 }
 
 prepare_files_list() {