assertTrue( $accumulator->add('id1'));
        $this->assertTrue( $accumulator->add('id2'));
        $this->assertFalse($accumulator->add('id1')); // repeated id
        // you can also access the properties (they're public)
        $this->assertTrue( isset($accumulator->ids['id2']) );
    }
    public function testLoad()
    {
        $accumulator = new HTMLPurifier_IDAccumulator();
        $accumulator->load(array('id1', 'id2', 'id3'));
        $this->assertFalse($accumulator->add('id1')); // repeated id
        $this->assertTrue($accumulator->add('id4'));
    }
    public function testBuild()
    {
        $this->config->set('Attr.IDBlacklist', array('foo'));
        $accumulator = HTMLPurifier_IDAccumulator::build($this->config, $this->context);
        $this->assertTrue( isset($accumulator->ids['foo']) );
    }
}
// vim: et sw=4 sts=4