more tests

ci/test-12-option-type.pl

@@ -0,0 +1,10 @@
+#!/usr/bin/perl -w
+
+use Test::Command tests => 33;
+
+for my $arg (qw(i B c C H i O p Q r t)) {
+    my $cmd = Test::Command->new(cmd => "fping -$arg xxx");
+    $cmd->exit_is_num(1);
+    $cmd->stdout_is_eq("");
+    $cmd->stderr_like(qr{Usage:});
+}

src/fping.c

@@ -392,7 +392,8 @@ int main( int argc, char **argv )
             break;
         
         case 'r':
-            retry = ( unsigned int )atoi( optarg );
+            if(!(retry = ( unsigned int )atoi( optarg )))
+                usage(1);
             break;
         
         case 'i':
@@ -550,6 +551,9 @@ int main( int argc, char **argv )
                     perror("setting type of service octet IP_TOS");
                 }
             }
+            else {
+                usage(1);
+            }
             break;
         default:
             fprintf(stderr, "see 'fping -h' for usage information\n");