tests: refactor code to use require_proc_pid_status_

* tests/tail-2/tail-n0f: Read the process status using the test-lib.sh
require_proc_pid_status_ function.

diff --git a/tests/tail-2/tail-n0f b/tests/tail-2/tail-n0f
index 322fddc..fce7ed1 100755 (executable)
--- a/tests/tail-2/tail-n0f
+++ b/tests/tail-2/tail-n0f
@@ -40,9 +40,7 @@ for file in empty nonempty; do
     tail --sleep=4 -${c_or_n} 0 -f $file &
     pid=$!
     sleep .5
-    set _ `sed -n '/^State:[    ]*\([^  ]\)/s//\1/p' /proc/$pid/status`
-    shift # Remove the leading `_'.
-    state=$1
+    state=$(get_process_status_ $pid)
     case $state in
       S*) ;;
       *) echo $0: process in unexpected state: $state 1>&2; fail=1 ;;