/**
  * @covers SQLBuilder::leftJoin
  */
 public function testLeftJoin()
 {
     $this->sql->select('users', 'u', array('id', 'username', 'email'));
     $this->sql->leftJoin("account", "acc", "acc_id=u_id", array("id"));
     $actual = $this->sql->__toString();
     $excepted = "select u.id u_id,u.username u_username,u.email u_email,acc.id acc_id from users u left join account acc on (acc_id=u_id)";
     $this->assertSame($excepted, $actual);
 }