added dmail test

db/migrate/20100219230537_create_dmails.rb

@@ -0,0 +1,26 @@
+class CreateDmails < ActiveRecord::Migration
+  def self.up
+    create_table :dmails do |t|
+      t.column :owner_id, :integer, :null => false
+      t.column :from_id, :integer, :null => false
+      t.column :to_id, :integer, :null => false
+      t.column :parent_id, :integer
+      t.column :title, :string, :null => false
+      t.column :body, :text, :null => false
+      t.column :message_index, "tsvector", :null => false
+      t.column :is_read, :boolean, :null => false, :default => false
+      t.column :is_deleted, :boolean, :null => false, :default => false
+      t.timestamps
+    end
+    
+    add_index :dmails, :owner_id
+    add_index :dmails, :parent_id
+    
+    execute "CREATE INDEX index_dmails_on_message_index ON dmails USING GIN (message_index)"
+    execute "CREATE TRIGGER trigger_dmails_on_update BEFORE INSERT OR UPDATE ON dmails FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger('message_index', 'pg_catalog.english', 'title', 'body')"
+  end
+
+  def self.down
+    drop_table :dmails
+  end
+end