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);
}
}