From: Brandon L. Black <blblack@gmail.com>
Date: Fri, 17 Feb 2006 13:15:45 +0000 (+0000)
Subject: added optional test for fork stressing - not a very good test at the moment, but... 
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=474ab91c448ffd9758cdd6a1f7b266e9610dcbfd;p=dbsrgits%2FDBIx-Class-Historic.git

added optional test for fork stressing - not a very good test at the moment, but it is something
---

diff --git a/t/50fork.t b/t/50fork.t
new file mode 100644
index 0000000..0e40c6a
--- /dev/null
+++ b/t/50fork.t
@@ -0,0 +1,80 @@
+use Class::C3;
+use strict;
+use Test::More;
+use warnings;
+
+# 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 ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
+
+plan skip_all => 'Set $ENV{DBICTEST_FORK_STRESS} to run this test'
+    unless $ENV{DBICTEST_FORK_STRESS};
+
+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);
+
+plan tests => 15;
+
+use lib qw(t/lib);
+
+use_ok('DBICTest::Schema');
+
+DBICTest::Schema->compose_connection('PgTest' => $dsn, $user, $pass, { AutoCommit => 1 });
+
+my ($first_rs, $joe_record);
+
+eval {
+    my $dbh = PgTest->schema->storage->dbh;
+
+    $dbh->do("CREATE TABLE cd (cdid serial PRIMARY KEY, artist INTEGER NOT NULL UNIQUE, title VARCHAR(255) NOT NULL UNIQUE, year VARCHAR(255));");
+
+    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 });
+
+    $first_rs = PgTest->resultset('CD')->search({ year => 1901 });
+    $joe_record = $first_rs->next;
+};
+ok(!$@) or diag "Creation eval failed: $@";
+
+my $num_children = 10;
+my @pids;
+while(@pids < $num_children) {
+
+    my $pid = fork;
+    if(!defined $pid) {
+        die "fork failed: $!";
+    }
+    elsif($pid) {
+        push(@pids, $pid);
+	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 => $pid, year => scalar(@pids) });
+    }
+    sleep(3);
+    exit;
+}
+
+ok(1, "past forking");
+
+waitpid($_,0) for(@pids);
+
+ok(1, "past waiting");
+
+while(@pids) {
+    my $pid = pop(@pids);
+    my $rs = PgTest->resultset('CD')->search({ title => "test success $pid", artist => $pid, year => scalar(@pids) });
+    is($rs->next->get_column('artist'), $pid, "Child $pid successful");
+}
+
+ok(1, "Made it to the end");
+
+PgTest->schema->storage->dbh->do("DROP TABLE cd");