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use strict;
use warnings;
use Test::More;
# README: If you set the env var to a number greater than 10,
# we will use that many children
my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
my $num_children = $ENV{DBICTEST_FORK_STRESS};
plan skip_all => 'Set $ENV{DBICTEST_FORK_STRESS} to run this test'
unless $num_children;
plan skip_all => 'Set $ENV{DBICTEST_PG_DSN}, _USER and _PASS to run this test'
. ' (note: creates and drops a table named artist!)' unless ($dsn && $user);
if($num_children !~ /^[0-9]+$/ || $num_children < 10) {
$num_children = 10;
}
plan tests => $num_children + 6;
use lib qw(t/lib);
use_ok('DBICTest::Schema');
my $schema = DBICTest::Schema->connection($dsn, $user, $pass, { AutoCommit => 1 });
my $parent_rs;
eval {
my $dbh = $schema->storage->dbh;
{
local $SIG{__WARN__} = sub {};
eval { $dbh->do("DROP TABLE cd") };
$dbh->do("CREATE TABLE cd (cdid serial PRIMARY KEY, artist INTEGER NOT NULL UNIQUE, title VARCHAR(255) NOT NULL UNIQUE, year VARCHAR(255));");
}
$schema->resultset('CD')->create({ title => 'vacation in antarctica', artist => 123, year => 1901 });
$schema->resultset('CD')->create({ title => 'vacation in antarctica part 2', artist => 456, year => 1901 });
$parent_rs = $schema->resultset('CD')->search({ year => 1901 });
$parent_rs->next;
};
ok(!$@) or diag "Creation eval failed: $@";
{
my $pid = fork;
if(!defined $pid) {
die "fork failed: $!";
}
if (!$pid) {
exit $schema->storage->connected ? 1 : 0;
}
if (waitpid($pid, 0) == $pid) {
my $ex = $? >> 8;
ok($ex == 0, "storage->connected() returns false in child");
exit $ex if $ex; # skip remaining tests
}
}
my @pids;
while(@pids < $num_children) {
my $pid = fork;
if(!defined $pid) {
die "fork failed: $!";
}
elsif($pid) {
push(@pids, $pid);
next;
}
$pid = $$;
my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
my $row = $parent_rs->next;
if($row && $row->get_column('artist') =~ /^(?:123|456)$/) {
$schema->resultset('CD')->create({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
}
sleep(3);
exit;
}
ok(1, "past forking");
waitpid($_,0) for(@pids);
ok(1, "past waiting");
while(@pids) {
my $pid = pop(@pids);
my $rs = $schema->resultset('CD')->search({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
is($rs->next->get_column('artist'), $pid, "Child $pid successful");
}
ok(1, "Made it to the end");
$schema->storage->dbh->do("DROP TABLE cd");
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