tests: add skip option

As for now the test either fails or succeeds. Add third option: skip.
This is to be used for tests that might not be possible to execute for
example due to missing (software) components or kernel not being
compiled with debugging options.

Signed-off-by: Mateusz Kusiak <[email protected]>

test

@@ -46,12 +46,19 @@ md125=/dev/md125
 mdp0=/dev/md_d0
 mdp1=/dev/md_d1
 
+SKIP=3
+
 die() {
 	echo -e "\n\tERROR: $* \n"
 	save_log fail
 	exit 2
 }
 
+skip() {
+	echo -e "\n\tSKIPPING, REASON: $* \n"
+	exit $SKIP
+}
+
 ctrl_c() {
 	exitonerror=1
 	ctrl_c_error=1
@@ -142,11 +149,18 @@ do_test() {
 			succeed "succeeded\n"
 			_fail=0
 		else
-			print_time_elapsed $start_sec
-			save_log fail
-			_fail=1
-			if [ "$_broken" == "1" ]; then
-				echo "  (KNOWN BROKEN TEST: $_broken_msg)"
+			exit_code=$?  # Capture the exit code from the script
+			if [ $exit_code -eq $SKIP ]; then
+				warn "skipping"
+				save_log
+				_fail=0
+			else
+				print_time_elapsed $start_sec
+				save_log fail
+				_fail=1
+				if [ "$_broken" == "1" ]; then
+					echo "  (KNOWN BROKEN TEST: $_broken_msg)"
+				fi
 			fi
 		fi
 		restore_system_speed_limit