Unit tests

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 tmp.json
+*.bak

t/20_client_sim-data_up_to_date.t

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+#!/usr/bin/env perl
+
+use strict;
+use Test::More tests => 2;
+
+
+my $outdated=`find include/client_sim.data -mtime 14d`;
+ok($outdated eq "","include/client_sim.data should be no older then 14 days, run utils/update_client_sim_data.pl to correct"); 
+my $newer=`find utils/update_client_sim_data.pl -newer include/client_sim.data`;
+ok($newer eq "","utils/update_client_sim_data.pl should not be newer then include/client_sim.data, run utils/update_client_sim_data.pl to correct");
+done_testing;