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#!/usr/bin/perl
use strict;
use warnings;
use Test::More;
use ok 'Cache::Ref::FIFO';
{
my $c = Cache::Ref::FIFO->new( size => 3 );
isa_ok( $c, "Cache::Ref" );
$c->set( foo => "blah" );
is( $c->get("foo"), "blah", "foo in cache" );
$c->set( bar => "lala" );
is( $c->get("foo"), "blah", "foo still in cache" );
is( $c->get("bar"), "lala", "bar in cache" );
$c->set( baz => "blob" );
is( $c->get("foo"), "blah", "foo still in cache" );
is( $c->get("bar"), "lala", "bar still in cache" );
is( $c->get("baz"), "blob", "baz in cache" );
$c->set( zot => "quxx" );
is( $c->get("foo"), undef, "foo no longer in cache" );
is( $c->get("bar"), "lala", "bar still in cache" );
is( $c->get("baz"), "blob", "baz still in cache" );
is( $c->get("zot"), "quxx", "zot in cache" );
$c->set( baz => "jsd" );
$c->set( quxx => "dancing" );
is( $c->get("foo"), undef, "foo no longer in cache" );
is( $c->get("bar"), undef, "bar no longer in cache" );
is( $c->get("baz"), "jsd", "baz still in cache" );
is( $c->get("zot"), "quxx", "zot still in cache" );
is( $c->get("quxx"), "dancing", "quxx in cache" );
$c->remove("quxx");
is( $c->get("foo"), undef, "foo no longer in cache" );
is( $c->get("bar"), undef, "bar no longer in cache" );
is( $c->get("baz"), "jsd", "baz still in cache" );
is( $c->get("zot"), "quxx", "zot still in cache" );
is( $c->get("quxx"), undef, "quxx removed from cache" );
is_deeply( [ $c->get(qw(baz zot nothere)) ], [ qw(jsd quxx), undef ], "mget" );
is( $c->_index_size, 2, "two elements in cache" );
$c->remove("bar");
$c->set( $_ => $_ ) for 1 .. 3;
is( $c->get($_), $_, "get $_" ) for 1 .. 3;
is( $c->_index_size, 3, "refilled" );
$c->expire(2);
is( $c->_index_size, 1, "expired" );
$c->clear;
is( $c->_index_size, 0, "no elements in cache" );
}
{
my $c = Cache::Ref::FIFO->new( size => 5 );
my ( $hit, $miss ) = ( 0, 0 );
for ( 1 .. 2000 ) {
my $key = 1 + int rand 8;
if ( $c->get($key) ) {
$hit++;
} else {
$miss++;
$c->set($key => $key);
}
}
cmp_ok( $hit, '>=', $miss, "more cache hits than misses during random access of small sigma ($hit >= $miss)" );
( $hit, $miss ) = ( 0, 0 );
for ( 1 .. 100 ) {
foreach my $key ( 1 .. 10 ) {
if ( $c->get($key) ) {
$hit++;
} else {
$miss++;
$c->set($key => $key);
}
}
}
cmp_ok( $hit, '<=', $c->size * 3, "no significant hits during linear scans ($hit)" );
}
done_testing;
# ex: set sw=4 et:
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