def = new HTMLPurifier_AttrDef_CSS_AlphaValue();
        $this->assertDef('0');
        $this->assertDef('1');
        $this->assertDef('.2');
        // clamping to [0.0, 1,0]
        $this->assertDef('1.2', '1');
        $this->assertDef('-3', '0');
        $this->assertDef('0.0', '0');
        $this->assertDef('1.0', '1');
        $this->assertDef('000', '0');
        $this->assertDef('asdf', false);
    }
}
// vim: et sw=4 sts=4