-use Class::C3;
+BEGIN { do "./t/lib/ANFANG.pm" or die ( $@ || $! ) }
+use DBIx::Class::Optional::Dependencies -skip_all_without => 'test_rdbms_pg';
+
use strict;
-use Test::More;
use warnings;
+use Test::More;
+use Test::Exception;
+use Time::HiRes qw(time sleep);
+use List::Util 'max';
+
+use DBICTest;
-# This test passes no matter what in most cases. However, prior to the recent
-# fork-related fixes, it would spew lots of warnings. I have not quite gotten
-# it to where it actually fails in those cases.
+my $main_pid = $$;
+
+# README: If you set the env var to a number greater than 5,
+# we will use that many children
+my $num_children = $ENV{DBICTEST_FORK_STRESS} || 1;
+if($num_children !~ /^[0-9]+$/ || $num_children < 5) {
+ $num_children = 5;
+}
my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
+my $schema = DBICTest::Schema->connect($dsn, $user, $pass, { AutoCommit => 1 });
-plan skip_all => 'Set $ENV{DBICTEST_FORK_STRESS} to run this test'
- unless $ENV{DBICTEST_FORK_STRESS};
+my $parent_rs;
-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);
+eval {
+ my $dbh = $schema->storage->dbh;
-plan tests => 15;
+ {
+ 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(100) NOT NULL UNIQUE, year VARCHAR(100) NOT NULL, genreid INTEGER, single_track INTEGER);");
+ }
-use lib qw(t/lib);
+ $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 });
-use_ok('DBICTest::Schema');
+ $parent_rs = $schema->resultset('CD')->search({ year => 1901 });
+ is ($parent_rs->count, 2);
+};
+ok(!$@) or diag "Creation eval failed: $@";
-DBICTest::Schema->compose_connection('PgTest' => $dsn, $user, $pass, { AutoCommit => 1 });
+# basic tests
+{
+ ok ($schema->storage->connected(), 'Parent is connected');
+ is ($parent_rs->next->id, 1, 'Cursor advanced');
-my ($first_rs, $joe_record);
+ my ($parent_in, $child_out);
+ pipe( $parent_in, $child_out ) or die "Pipe open failed: $!";
-eval {
- my $dbh = PgTest->schema->storage->dbh;
+ my $pid = fork;
+ if(!defined $pid) {
+ die "fork failed: $!";
+ }
- $dbh->do("CREATE TABLE cd (cdid serial PRIMARY KEY, artist INTEGER NOT NULL UNIQUE, title VARCHAR(255) NOT NULL UNIQUE, year VARCHAR(255));");
+ if (!$pid) {
+ close $parent_in;
- PgTest->resultset('CD')->create({ title => 'vacation in antarctica', artist => 123, year => 1901 });
- PgTest->resultset('CD')->create({ title => 'vacation in antarctica part 2', artist => 456, year => 1901 });
+ #simulate a subtest to not confuse the parent TAP emission
+ my $tb = Test::More->builder;
+ $tb->reset;
+ for (qw/output failure_output todo_output/) {
+ close $tb->$_;
+ open ($tb->$_, '>&', $child_out);
+ }
- $first_rs = PgTest->resultset('CD')->search({ year => 1901 });
- $joe_record = $first_rs->next;
-};
-ok(!$@) or diag "Creation eval failed: $@";
+ ok(!$schema->storage->connected, "storage->connected() false in child");
+ for (1,2) {
+ throws_ok { $parent_rs->next } qr/\QMulti-process access attempted while cursor in progress (position 1)/;
+ }
+
+ $parent_rs->reset;
+ is($parent_rs->next->id, 1, 'Resetting cursor reprepares it within child environment');
+
+ done_testing;
+ exit 0;
+ }
+
+ close $child_out;
+ while (my $ln = <$parent_in>) {
+ print " $ln";
+ }
+ waitpid( $pid, 0 );
+ ok(!$?, 'Child subtests passed');
+
+ is ($parent_rs->next->id, 2, 'Cursor still intact in parent');
+ is ($parent_rs->next, undef, 'Cursor exhausted');
+}
+
+$parent_rs->reset;
+
+# sleep until this spot so everything starts simultaneously
+# add "until turn of second" for prettier display
+my $t = int( time() ) + 4;
-my $num_children = 10;
my @pids;
while(@pids < $num_children) {
}
elsif($pid) {
push(@pids, $pid);
- next;
+ next;
}
$pid = $$;
- my ($forked_rs, $joe_forked);
- $forked_rs = PgTest->resultset('CD')->search({ year => 1901 });
- $joe_forked = $first_rs->next;
- if($joe_forked && $joe_forked->get_column('artist') =~ /^(?:123|456)$/) {
- PgTest->resultset('CD')->create({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
+ sleep( max( 0.1, $t - time ) );
+ note ("Child process $pid starting work at " . time() );
+
+ my $work = sub {
+ my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
+ my $row = $parent_rs->next;
+ $schema->resultset('CD')->create({ title => "test success $pid", artist => $pid, year => scalar(@pids) })
+ if($row && $row->get_column('artist') =~ /^(?:123|456)$/);
+ };
+
+ # try with and without transactions
+ if ((@pids % 3) == 1) {
+ my $guard = $schema->txn_scope_guard;
+ $work->();
+ $guard->commit;
+ }
+ elsif ((@pids % 3) == 2) {
+ $schema->txn_do ($work);
}
- sleep(3);
- exit;
+ else {
+ $work->();
+ }
+
+ sleep(2);
+ exit 0;
}
ok(1, "past forking");
-waitpid($_,0) for(@pids);
+for (@pids) {
+ waitpid($_,0);
+ ok (! $?, "Child $_ exitted cleanly");
+};
ok(1, "past waiting");
while(@pids) {
my $pid = pop(@pids);
- my $rs = PgTest->resultset('CD')->search({ title => "test success $pid", artist => $pid, year => scalar(@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");
-PgTest->schema->storage->dbh->do("DROP TABLE cd");
+done_testing;
+
+END {
+ $schema->storage->dbh->do("DROP TABLE cd") if ($schema and $main_pid == $$);
+ undef $schema;
+}
projects / dbsrgits/DBIx-Class.git / blobdiff