run "$bp -I $in -O $tmp"
assert_no_diff $tmp $out.1
-rm $tmp
+clean
run "$bp -I $in -k CUSTOM_KEY -O $tmp"
assert_no_diff $tmp $out.2
-rm $tmp
+clean
run "$bp -I $in -p PREFIX -O $tmp"
assert_no_diff $tmp $out.3
-rm $tmp
+clean
+
+run "$bp -I $in -o 5 -O $tmp"
+assert_no_diff $tmp $out.4
+clean