Test jdbc adapters by default on jruby

activerecord/Rakefile

@@ -30,7 +30,9 @@ desc 'Run mysql, sqlite, and postgresql tests by default'
 task :default => :test
 
 desc 'Run mysql, sqlite, and postgresql tests'
-task :test => %w(test_mysql test_sqlite3 test_postgresql)
+task :test => defined?(JRUBY_VERSION) ?
+  %w(test_jdbcmysql test_jdbcsqlite3 test_jdbcpostgresql) :
+  %w(test_mysql test_sqlite3 test_postgresql)
 
 for adapter in %w( mysql postgresql sqlite sqlite3 firebird db2 oracle sybase openbase frontbase jdbcmysql jdbcpostgresql jdbcsqlite3 jdbcderby jdbch2 jdbchsqldb )
   Rake::TestTask.new("test_#{adapter}") { |t|