test(helper): add test for helper output

tests/helper-output.t

@@ -0,0 +1,21 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use Test::More;
+use Test::Exception;
+use lib '../lib';
+use SecurityGate::Utils::Helper;
+
+subtest 'Helper output' => sub {
+    my $helper_output = SecurityGate::Utils::Helper->new();
+
+    like($helper_output, qr/Security\ Gate\ v0\.0\.3/x, 'Helper output contains version');
+    like($helper_output, qr/-t,\ --token/x, 'Helper output contains token option');
+    like($helper_output, qr/-r,\ --repo/x, 'Helper output contains repo option');
+    like($helper_output, qr/--dependency-alerts/x, 'Helper output contains dependency alerts option');
+    like($helper_output, qr/--secret-scanning-alerts/x, 'Helper output contains secret scanning alerts option');
+    like($helper_output, qr/--code-scanning-alerts/x, 'Helper output contains code scanning alerts option');
+};
+
+done_testing();