public function testSystemText()
{
$i = new Gd(__DIR__ . '/../tmp/test.jpg');
$i->text('Hello World', 36, 10, 100);
$this->assertEquals(640, $i->getWidth());
$i = new Gd(__DIR__ . '/../tmp/test.jpg');
$i->text('Hello World', 0, 10, 100);
$this->assertEquals(640, $i->getWidth());
}