public function testGetPixelColor($adapter)
{
$expected = new \stdClass();
$expected->red = 100;
$expected->green = 50;
$expected->blue = 25;
$expected->alpha = 0;
$this->assertEquals($expected, $adapter->getPixelColor(1, 0));
$expected->alpha = 12;
$this->assertEquals($expected, $adapter->getPixelColor(1, 1));
$expected->alpha = 63;
$this->assertEquals($expected, $adapter->getPixelColor(1, 2));
$expected->alpha = 114;
$this->assertEquals($expected, $adapter->getPixelColor(1, 3));
$expected->red = 255;
$expected->green = 255;
$expected->blue = 255;
$expected->alpha = 127;
$this->assertEquals($expected, $adapter->getPixelColor(1, 4));
}