4 # Do the override as early as possible so that CORE::bless doesn't get compiled away
5 # We will replace $bless_override only if we are in author mode
8 $bless_override = sub {
9 CORE::bless( $_[0], (@_ > 1) ? $_[1] : caller() );
11 *CORE::GLOBAL::bless = sub { goto $bless_override };
15 use Scalar::Util qw/refaddr reftype weaken/;
16 use Carp qw/longmess/;
20 use DBICTest::RunMode;
24 require DBIx::Class::Optional::Dependencies;
25 $have_test_cycle = DBIx::Class::Optional::Dependencies->req_ok_for ('test_leaks')
26 and import Test::Memory::Cycle;
29 # this is what holds all weakened refs to be checked for leakage
30 my $weak_registry = {};
32 # Skip the heavy-duty leak tracing when just doing an install
33 unless (DBICTest::RunMode->is_plain) {
35 # Some modules are known to install singletons on-load
36 # Load them before we swap out $bless_override
40 require Class::Struct;
44 no warnings qw/redefine once/;
47 # redefine the bless override so that we can catch each and every object created
48 $bless_override = sub {
50 my $obj = CORE::bless(
51 $_[0], (@_ > 1) ? $_[1] : do {
52 my ($class, $fn, $line) = caller();
53 fail ("bless() of $_[0] into $class without explicit class specification at $fn line $line")
54 if $class =~ /^ (?: DBIx\:\:Class | DBICTest ) /x;
59 my $slot = (sprintf '%s=%s(0x%x)', # so we don't trigger stringification
65 # weaken immediately to avoid weird side effects
66 $weak_registry->{$slot} = { weakref => $obj, strace => longmess() };
67 weaken $weak_registry->{$slot}{weakref};
72 for my $func (qw/try catch finally/) {
73 my $orig = \&{"Try::Tiny::$func"};
74 *{"Try::Tiny::$func"} = sub (&;@) {
76 my $slot = sprintf ('CODE(0x%x)', refaddr $_[0]);
78 $weak_registry->{$slot} = { weakref => $_[0], strace => longmess() };
79 weaken $weak_registry->{$slot}{weakref};
89 my $schema = DBICTest->init_schema;
90 my $rs = $schema->resultset ('Artist');
91 my $storage = $schema->storage;
93 ok ($storage->connected, 'we are connected');
95 my $row_obj = $rs->next;
96 ok ($row_obj, 'row from db');
98 my ($mc_row_obj, $pager, $pager_explicit_count) = $schema->txn_do (sub {
100 my $artist = $rs->create ({
101 name => 'foo artist',
108 my $pg = $rs->search({}, { rows => 1})->page(2)->pager;
110 my $pg_wcount = $rs->page(4)->pager->total_entries (66);
112 return ($artist, $pg, $pg_wcount);
115 is ($pager->next_page, 3, 'There is one more page available');
117 # based on 66 per 10 pages
118 is ($pager_explicit_count->last_page, 7, 'Correct last page');
120 my $base_collection = {
126 row_object => $row_obj,
128 result_source => $rs->result_source,
130 fresh_pager => $rs->page(5)->pager,
132 pager_explicit_count => $pager_explicit_count,
134 sql_maker => $storage->sql_maker,
135 dbh => $storage->_dbh
138 memory_cycle_ok ($base_collection, 'No cycles in the object collection')
141 for (keys %$base_collection) {
142 $weak_registry->{"basic $_"} = { weakref => $base_collection->{$_} };
143 weaken $weak_registry->{"basic $_"}{weakref};
148 memory_cycle_ok($weak_registry, 'No cycles in the weakened object collection')
151 # Naturally we have some exceptions
153 for my $slot (keys %$weak_registry) {
154 if ($slot =~ /^SQL\:\:Translator/) {
155 # SQLT is a piece of shit, leaks all over
156 delete $weak_registry->{$slot};
158 elsif ($slot =~ /^Hash\:\:Merge/) {
159 # only clear one object - more would indicate trouble
160 delete $weak_registry->{$slot}
161 unless $cleared->{hash_merge_singleton}{$weak_registry->{$slot}{weakref}{behavior}}++;
167 # For reasons I can not yet fully understand the table() god-method (located in
168 # ::ResultSourceProxy::Table) attaches an actual source instance to each class
169 # as virtually *immortal* class-data.
170 # For now just blow away these instances manually but there got to be a saner way
171 $_->result_source_instance(undef) for (
172 'DBICTest::BaseResult',
173 map { DBICTest::Schema->class ($_) } DBICTest::Schema->sources
177 # same problem goes for the schema - its classdata contains live result source
178 # objects, which to add insult to the injury are *different* instances from the
179 # ones we destroyed above
180 DBICTest::Schema->source_registrations(undef);
182 my $tb = Test::More->builder;
183 for my $slot (keys %$weak_registry) {
185 ok (! defined $weak_registry->{$slot}{weakref}, "No leaks of $slot") or do {
188 $diag .= Devel::FindRef::track ($weak_registry->{$slot}{weakref}, 20) . "\n"
189 if ( $ENV{TEST_VERBOSE} && try { require Devel::FindRef });
191 if (my $stack = $weak_registry->{$slot}{strace}) {
192 $diag .= " Reference first seen$stack";