/**
  * @covers SQLBuilder::__toString
  */
 public function test__toStringWhere()
 {
     $this->sql->select('users', 'u', array('id', 'username', 'email'));
     $this->sql->filter("id > 11");
     $actual = $this->sql->__toString();
     $excepted = "select u.id u_id,u.username u_username,u.email u_email from users u where (id > 11)";
     $this->assertSame($excepted, $actual);
 }