1use strict;
2use warnings;
3use Test::More;
4
5# README: If you set the env var to a number greater than 10,
6#   we will use that many children
7
8my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
9my $num_children = $ENV{DBICTEST_FORK_STRESS};
10
11plan skip_all => 'Set $ENV{DBICTEST_FORK_STRESS} to run this test'
12    unless $num_children;
13
14plan skip_all => 'Set $ENV{DBICTEST_PG_DSN}, _USER and _PASS to run this test'
15      . ' (note: creates and drops a table named artist!)' unless ($dsn && $user);
16
17if($num_children !~ /^[0-9]+$/ || $num_children < 10) {
18   $num_children = 10;
19}
20
21plan tests => $num_children + 6;
22
23use lib qw(t/lib);
24
25use_ok('DBICTest::Schema');
26
27my $schema = DBICTest::Schema->connection($dsn, $user, $pass, { AutoCommit => 1 });
28
29my $parent_rs;
30
31eval {
32    my $dbh = $schema->storage->dbh;
33
34    {
35        local $SIG{__WARN__} = sub {};
36        eval { $dbh->do("DROP TABLE cd") };
37        $dbh->do("CREATE TABLE cd (cdid serial PRIMARY KEY, artist INTEGER NOT NULL UNIQUE, title VARCHAR(100) NOT NULL UNIQUE, year VARCHAR(100) NOT NULL, genreid INTEGER, single_track INTEGER);");
38    }
39
40    $schema->resultset('CD')->create({ title => 'vacation in antarctica', artist => 123, year => 1901 });
41    $schema->resultset('CD')->create({ title => 'vacation in antarctica part 2', artist => 456, year => 1901 });
42
43    $parent_rs = $schema->resultset('CD')->search({ year => 1901 });
44    $parent_rs->next;
45};
46ok(!$@) or diag "Creation eval failed: $@";
47
48{
49    my $pid = fork;
50    if(!defined $pid) {
51        die "fork failed: $!";
52    }
53
54    if (!$pid) {
55        exit $schema->storage->connected ? 1 : 0;
56    }
57
58    if (waitpid($pid, 0) == $pid) {
59        my $ex = $? >> 8;
60        ok($ex == 0, "storage->connected() returns false in child");
61        exit $ex if $ex; # skip remaining tests
62    }
63}
64
65my @pids;
66while(@pids < $num_children) {
67
68    my $pid = fork;
69    if(!defined $pid) {
70        die "fork failed: $!";
71    }
72    elsif($pid) {
73        push(@pids, $pid);
74        next;
75    }
76
77    $pid = $$;
78
79    my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
80    my $row = $parent_rs->next;
81    if($row && $row->get_column('artist') =~ /^(?:123|456)$/) {
82        $schema->resultset('CD')->create({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
83    }
84    sleep(3);
85    exit;
86}
87
88ok(1, "past forking");
89
90waitpid($_,0) for(@pids);
91
92ok(1, "past waiting");
93
94while(@pids) {
95    my $pid = pop(@pids);
96    my $rs = $schema->resultset('CD')->search({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
97    is($rs->next->get_column('artist'), $pid, "Child $pid successful");
98}
99
100ok(1, "Made it to the end");
101
102$schema->storage->dbh->do("DROP TABLE cd");
103