copy() public method

Use $acfFileUrl instead of the provided $fileUrl
public copy ( string $originUrl, string $fileUrl, string $fileName, boolean $progress = true, array $options = [] ) : boolean
$originUrl string The origin URL
$fileUrl string The file URL (ignored)
$fileName string the local filename
$progress boolean Display the progression
$options array Additional context options
return boolean true
 public function testCopyUsesAcfFileUrl()
 {
     $acfFileUrl = 'file://' . __FILE__;
     $rfs = new RemoteFilesystem($acfFileUrl, $this->io);
     $file = tempnam(sys_get_temp_dir(), 'pb');
     $this->assertTrue($rfs->copy('http://example.org', 'does-not-exist', $file));
     $this->assertFileExists($file);
     unlink($file);
 }