function testEmptySizeConfigSavesUnmodifiedVersion()
{
$this->hooks->registerHandler('entity:cover:sizes', 'object', array($this, 'getCoverSizes'));
$service = $this->createService();
$file = new \ElggFile();
$file->owner_guid = 1;
$file->setFilename('600x300.jpg');
$file->mimetype = 'image/jpeg';
$service->saveIconFromElggFile($this->entity, $file, 'cover');
// original file should stay where it is
$this->assertTrue($file->exists());
$this->assertTrue($service->hasIcon($this->entity, 'medium', 'cover'));
$this->assertTrue($service->hasIcon($this->entity, 'original', 'cover'));
$medium = $service->getIcon($this->entity, 'original', 'cover');
$medium_bytes = file_get_contents($medium->getFilenameOnFilestore());
$source_bytes = file_get_contents($file->getFilenameOnFilestore());
// crop with coordinates
$service->saveIconFromElggFile($this->entity, $file, 'cover', ['x1' => 10, 'y1' => 10, 'x2' => 110, 'y2' => 110]);
// source file should stay where it is
$this->assertTrue($file->exists());
$this->assertTrue($service->hasIcon($this->entity, 'medium', 'cover'));
$this->assertTrue($service->hasIcon($this->entity, 'original', 'cover'));
// original should remain the same
$this->assertEquals($source_bytes, file_get_contents($service->getIcon($this->entity, 'original', 'cover')->getFilenameOnFilestore()));
// medium should have been cropped
$this->assertNotEquals($medium_bytes, file_get_contents($service->getIcon($this->entity, 'medium', 'cover')->getFilenameOnFilestore()));
}