use strict;
use warnings;
-use Test::More tests => 1;
+use Test::More tests => 17;
BEGIN { use_ok('IndexData::Utils::PersistentCounter') };
+
+my $file = "/tmp/id-u-pc-$$";
+my $counter = new IndexData::Utils::PersistentCounter($file);
+ok(!defined $counter, "can't open non-existent counter");
+
+$counter = new IndexData::Utils::PersistentCounter("/x/$file", 1);
+ok(!defined $counter, "can't create counter in silly place");
+
+$counter = new IndexData::Utils::PersistentCounter($file, 1);
+my $detail = defined $counter ? '' : ": $!@";
+ok(defined $counter, "created new counter$detail");
+
+foreach my $i (1..5) {
+ my $n = $counter->next();
+ ok(defined $n, "n is defined");
+ ok($n == $i, "n has correct value $i");
+}
+
+# Three processes making five accesses each
+for (my $i = 0; $i < 3; $i ++) {
+ my $pid = fork();
+ if ($pid == 0) {
+ # child
+ foreach my $j (1..5) {
+ my $n = $counter->next();
+ print "# child ", $i+1, ", access ", $j+1, ": value is $n\n";
+ }
+ exit 0;
+ } else {
+ print "# process $pid started\n";
+ }
+}
+
+while ((my $pid = wait()) > 0) {
+ print "# process $pid completed\n";
+}
+
+my $n = $counter->next();
+ok($n == 21, "n == 21 on 21 total access (n=$n)");
+
+my $ok = $counter->delete();
+ok($ok, "deleted counter file");
+$counter = new IndexData::Utils::PersistentCounter($file);
+ok(!defined $counter, "can't open deleted counter");