ignore extra args when test env

ruby/lib/jam_ruby/tasks/db/migrate.rake

@@ -17,11 +17,14 @@ namespace :db do
 
     desc "Migrate the database"
     task :migrate do
-      version = ARGV[1]
-      if !version.nil?
-        version = version.to_i
+      version = nil
+      if ENV['RAILS_ENV'] != "test"
+        version = ARGV[1]
+        if !version.nil?
+          version = version.to_i
+        end
       end
-
+      
       ActiveRecord::Base.establish_connection(db_config)
       migrate_dir = JamRuby::RakeUtil.migrations_path
       ActiveRecord::Migrator.migrate(migrate_dir, version)