t/Cache.t

   1 #!/usr/bin/perl
   2
   3 # Tests Koha::Cache and whichever type of cache is enabled (through Koha::Cache)
   4
   5 use strict;
   6 use warnings;
   7
   8 use Test::More tests => 29;
   9
  10 my $destructorcount = 0;
  11
  12 BEGIN {
  13     use_ok('Koha::Cache');
  14     use_ok('Koha::Cache::Object');
  15     use_ok('C4::Context');
  16 }
  17
  18 SKIP: {
  19     my $cache = Koha::Cache->new();
  20
  21     skip "Cache not enabled", 25
  22       unless ( Koha::Cache->is_cache_active() && defined $cache );
  23
  24     # test fetching an item that isnt in the cache
  25     is( $cache->get_from_cache("not in here"),
  26         undef, "fetching item NOT in cache" );
  27
  28     # test expiry time in cache
  29     $cache->set_in_cache( "timeout", "I AM DATA", 1 ); # expiry time of 1 second
  30     sleep 2;
  31     is( $cache->get_from_cache("timeout"),
  32         undef, "fetching expired item from cache" );
  33
  34     # test fetching a valid, non expired, item from cache
  35     $cache->set_in_cache( "clear_me", "I AM MORE DATA", 1000 )
  36       ;    # overly large expiry time, clear below
  37     $cache->set_in_cache( "dont_clear_me", "I AM MORE DATA22", 1000 )
  38       ;    # overly large expiry time, clear below
  39     is(
  40         $cache->get_from_cache("clear_me"),
  41         "I AM MORE DATA",
  42         "fetching valid item from cache"
  43     );
  44
  45     # test clearing from cache
  46     $cache->clear_from_cache("clear_me");
  47     is( $cache->get_from_cache("clear_me"),
  48         undef, "fetching cleared item from cache" );
  49     is(
  50         $cache->get_from_cache("dont_clear_me"),
  51         "I AM MORE DATA22",
  52         "fetching valid item from cache (after clearing another item)"
  53     );
  54
  55     #test flushing from cache
  56     $cache->set_in_cache( "flush_me", "testing 1 data" );
  57     $cache->flush_all;
  58     is( $cache->get_from_cache("flush_me"),
  59         undef, "fetching flushed item from cache" );
  60     is( $cache->get_from_cache("dont_clear_me"),
  61         undef, "fetching flushed item from cache" );
  62
  63     my $constructorcount = 0;
  64     my $myscalar         = $cache->create_scalar(
  65         {
  66             'key'         => 'myscalar',
  67             'timeout'     => 1,
  68             'allowupdate' => 1,
  69             'unset'       => 1,
  70             'constructor' => sub { return ++$constructorcount; },
  71             'destructor'  => sub { return ++$destructorcount; },
  72         }
  73     );
  74     ok( defined($myscalar), 'Created tied scalar' );
  75     is( $$myscalar, 1, 'Constructor called to first initialize' );
  76     is( $$myscalar, 1, 'Data retrieved from cache' );
  77     sleep 2;
  78     is( $$myscalar, 2, 'Constructor called again when timeout reached' );
  79     $$myscalar = 5;
  80     is( $$myscalar,        5, 'Stored new value to cache' );
  81     is( $constructorcount, 2, 'Constructor not called after storing value' );
  82     undef $myscalar;
  83
  84     is( $cache->get_from_cache("myscalar"),
  85         undef, 'Item removed from cache on destruction' );
  86
  87     my %hash = ( 'key' => 'value' );
  88
  89     my $myhash         = $cache->create_hash(
  90         {
  91             'key'         => 'myhash',
  92             'timeout'     => 1,
  93             'allowupdate' => 1,
  94             'unset'       => 1,
  95             'constructor' => sub { return { %hash }; },
  96         }
  97     );
  98
  99     ok(defined $myhash, 'Created tied hash');
 100
 101     is($myhash->{'key'}, 'value', 'Found expected value in hash');
 102     ok(exists $myhash->{'key'}, 'Exists works');
 103     $myhash->{'key2'} = 'surprise';
 104     is($myhash->{'key2'}, 'surprise', 'Setting hash member worked');
 105     $hash{'key2'} = 'nosurprise';
 106     sleep 2;
 107     is($myhash->{'key2'}, 'nosurprise', 'Cache change caught');
 108
 109
 110     my $foundkeys = 0;
 111     foreach my $key (keys %{$myhash}) {
 112         $foundkeys++;
 113     }
 114
 115     is($foundkeys, 2, 'Found expected 2 keys when iterating through hash');
 116
 117     isnt(scalar %{$myhash}, undef, 'scalar knows the hash is not empty');
 118
 119     $hash{'anotherkey'} = 'anothervalue';
 120
 121     sleep 2;
 122
 123     ok(exists $myhash->{'anotherkey'}, 'Cache reset properly');
 124
 125     delete $hash{'anotherkey'};
 126     delete $myhash->{'anotherkey'};
 127
 128     ok(!exists $myhash->{'anotherkey'}, 'Key successfully deleted');
 129
 130     undef %hash;
 131     %{$myhash} = ();
 132
 133     is(scalar %{$myhash}, 0, 'hash cleared');
 134
 135     $hash{'key'} = 'value';
 136     is($myhash->{'key'}, 'value', 'retrieved value after clearing cache');
 137 }
 138
 139 END {
 140   SKIP: {
 141         skip "Cache not enabled", 1
 142           unless ( Koha::Cache->is_cache_active() );
 143         is( $destructorcount, 1, 'Destructor run exactly once' );
 144     }
 145 }