chown: add a test

Add a test for the chown utility. This sets up chown(8) to be capable of being
tested.  As such, only add one test for now as an example.

etc/mtree/BSD.tests.dist

@@ -21,6 +21,8 @@
     ..
     tests
         bin
+            chown
+            ..
             date
             ..
             mv

usr.sbin/chown/Makefile

@@ -1,8 +1,14 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 PROG=	chown
 LINKS=	${BINDIR}/chown /usr/bin/chgrp
 MAN=	chgrp.1 chown.8
 
+.if ${MK_TESTS} != "no"
+SUBDIR+= tests
+.endif
+
 .include <bsd.prog.mk>

usr.sbin/chown/tests/Makefile

@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+.include <bsd.own.mk>
+
+TESTSDIR=	${TESTSBASE}/bin/chown
+
+TAP_TESTS_SH=			chown-f_test
+
+.include <bsd.test.mk>

usr.sbin/chown/tests/chown-f_test.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# $FreeBSD$
+
+base=`basename $0`
+
+echo "1..1"
+
+name="chown -f root:wheel file"
+if [ `id -u` -eq 0 ]; then
+	echo "ok 3 - $name # skip Test must not be uid 0."
+else
+    touch file
+    output=$(chown -f root:wheel file 2>&1)
+    if [ $? -eq 0 -a -z "$output" ]
+    then
+        echo "ok 1 - $name"
+    else
+        echo "not ok 1 - $name"
+    fi
+    rm file
+fi