public function testDepth()
{
$source = fopen("{$this->_files}/image_png.png", 'r');
// this one has 16 bit
$subject = new Imagick($source);
$reduced = fopen('php://temp', 'w+');
$result = $subject->depth(8);
$subject->store($reduced);
$sourceMeta = fstat($source);
$reducedMeta = fstat($reduced);
$this->assertTrue($result);
$this->assertLessThan($sourceMeta['size'], $reducedMeta['size']);
fclose($source);
fclose($reduced);
}
