From: Brandon L. Black <blblack@gmail.com>
Date: Thu, 5 Jun 2008 07:21:42 +0000 (+0000)
Subject: remove a line from the threads test that had the potential to mask bugs, and copy... 
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=39fa10f57ca66b1c1e7a555bb07866b11bf54951;p=dbsrgits%2FDBIx-Class-Historic.git

remove a line from the threads test that had the potential to mask bugs, and copy it to a new "threadtxn" test too, which uses a txn_do in each thread to do the same stuff
---

diff --git a/t/51threads.t b/t/51threads.t
index 615fb09..36ea86f 100644
--- a/t/51threads.t
+++ b/t/51threads.t
@@ -60,7 +60,6 @@ while(@children < $num_children) {
 
     my $newthread = async {
         my $tid = threads->tid;
-        my $dbh = $schema->storage->dbh;
 
         my $child_rs = $schema->resultset('CD')->search({ year => 1901 });
         my $row = $parent_rs->next;
diff --git a/t/51threadtxn.t b/t/51threadtxn.t
new file mode 100644
index 0000000..9908b8c
--- /dev/null
+++ b/t/51threadtxn.t
@@ -0,0 +1,95 @@
+use strict;
+use warnings;
+use Test::More;
+use Config;
+
+# README: If you set the env var to a number greater than 10,
+#   we will use that many children
+
+BEGIN {
+    plan skip_all => 'Your perl does not support ithreads'
+        if !$Config{useithreads} || $] < 5.008;
+}
+
+use threads;
+
+my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_PG_${_}" } qw/DSN USER PASS/};
+my $num_children = $ENV{DBICTEST_THREAD_STRESS};
+
+plan skip_all => 'Set $ENV{DBICTEST_THREAD_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 && $user);
+
+diag 'It is normal to see a series of "Scalars leaked: ..." messages during this test';
+
+if($num_children !~ /^[0-9]+$/ || $num_children < 10) {
+   $num_children = 10;
+}
+
+plan tests => $num_children + 5;
+
+use lib qw(t/lib);
+
+use_ok('DBICTest::Schema');
+
+my $schema = DBICTest::Schema->connection($dsn, $user, $pass, { AutoCommit => 1, RaiseError => 1, PrintError => 0 });
+
+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 @children;
+while(@children < $num_children) {
+
+    my $newthread = async {
+        my $tid = threads->tid;
+        # my $dbh = $schema->storage->dbh;
+
+        $schema->txn_do(sub {
+            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 $tid", artist => $tid, year => scalar(@children) });
+            }
+        });
+        sleep(3);
+    };
+    die "Thread creation failed: $! $@" if !defined $newthread;
+    push(@children, $newthread);
+}
+
+ok(1, "past spawning");
+
+{
+    $_->join for(@children);
+}
+
+ok(1, "past joining");
+
+while(@children) {
+    my $child = pop(@children);
+    my $tid = $child->tid;
+    my $rs = $schema->resultset('CD')->search({ title => "test success $tid", artist => $tid, year => scalar(@children) });
+    is($rs->next->get_column('artist'), $tid, "Child $tid successful");
+}
+
+ok(1, "Made it to the end");
+
+$schema->storage->dbh->do("DROP TABLE cd");