Initial

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 33 insertions, 0 deletions

diff --git a/activerecord/test/thread_safety_test.rb b/activerecord/test/thread_safety_test.rb
new file mode 100644
index 0000000000..635240c6af
--- /dev/null
+++ b/activerecord/test/thread_safety_test.rb
@@ -0,0 +1,33 @@
+require 'abstract_unit'
+require 'fixtures/topic'
+
+class ThreadSafetyTest < Test::Unit::TestCase
+  def setup
+    @topics  = create_fixtures "topics"
+    @threads = []
+  end
+  
+  def test_threading_on_transactions
+    # SQLite breaks down under thread banging
+    # Jamis Buck (author of SQLite-ruby): "I know that sqlite itself is not designed for concurrent access"
+    if ActiveRecord::ConnectionAdapters.const_defined? :SQLiteAdapter
+      return true if ActiveRecord::Base.connection.instance_of?(ActiveRecord::ConnectionAdapters::SQLiteAdapter)
+    end
+
+    5.times do |thread_number|
+      @threads << Thread.new(thread_number) do |thread_number|
+        first, second = Topic.find(1, 2)
+        Topic.transaction(first, second) do
+          Topic.logger.info "started #{thread_number}"
+          first.approved  = 1
+          second.approved = 0
+          first.save
+          second.save
+          Topic.logger.info "ended #{thread_number}"
+        end
+      end
+    end
+    
+    @threads.each { |t| t.join }
+  end
+end