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# -*- perl -*-
use strict;
use Set::IntSpan 1.17;
my $N = 1;
sub Not { print "not " }
sub OK { print "ok ", $N++, "\n" }
print "1..4\n";
print "#real_set\n";
my $set = new Set::IntSpan;
my $set_1 = union $set;
my $run_list_1 = run_list $set_1;
print "#real_set: union set -> $run_list_1\n";
empty $set_1 or Not; OK;
my $set_2 = union $set "1-5,8-9";
my $set_3 = union $set $set_2;
my $set_4 = union $set +[1, 5, 2, 8, 9, 1, 3, 4, 9];
my $run_list_2 = run_list $set_2;
my $run_list_3 = run_list $set_3;
my $run_list_4 = run_list $set_4;
print "#real_set: $run_list_2 -> $run_list_3\n";
$set_2->equal($set_3) or Not; OK;
print "#real_set: $run_list_2 -> $run_list_4\n";
$set_2->equal($set_4) or Not; OK;
my $set_5 = union $set "0";
my $run_list_5 = run_list $set_5;
print "#real_set: $run_list_5 -> 0\n";
$run_list_5 eq "0" or Not; OK;
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