prependCSS($attr, 'style:new;');
        $this->assertIdentical(array('style' => 'style:new;'), $attr);
        $attr = array('style' => 'style:original;');
        $t->prependCSS($attr, 'style:new;');
        $this->assertIdentical(array('style' => 'style:new;style:original;'), $attr);
        $attr = array('style' => 'style:original;', 'misc' => 'un-related');
        $t->prependCSS($attr, 'style:new;');
        $this->assertIdentical(array('style' => 'style:new;style:original;', 'misc' => 'un-related'), $attr);
    }
    public function test_confiscateAttr()
    {
        $t = new HTMLPurifier_AttrTransformTestable();
        $attr = array('flavor' => 'sweet');
        $this->assertIdentical('sweet', $t->confiscateAttr($attr, 'flavor'));
        $this->assertIdentical(array(), $attr);
        $attr = array('flavor' => 'sweet');
        $this->assertIdentical(null, $t->confiscateAttr($attr, 'color'));
        $this->assertIdentical(array('flavor' => 'sweet'), $attr);
    }
}
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