/**
*/
public function testUpdate()
{
$style1 = new FillStyle();
$style2 = new FillStyle('green', 0.6);
$style1->update($style2);
$this->assertSame(0.6, $style1->getOpacity());
$this->assertNotNull($style1->getColor());
$this->assertSame('green', $style1->getColor()->__toString());
// test independence of style1 and style2
$style1->setOpacity(0.3);
$this->assertSame(0.3, $style1->getOpacity());
$this->assertSame(0.6, $style2->getOpacity());
}
