public function testGetBackupWithFile()
{
$test_filename = 'test.tar.gz';
$test_download_url = 'http://download';
$this->backups->expects($this->once())->method('getBackupByFileName')->with($test_filename)->willReturn($this->backup);
$this->backup->expects($this->once())->method('getUrl')->willReturn($test_download_url);
$output = $this->command->getBackup('mysite.dev', ['file' => $test_filename]);
$this->assertEquals($output, $test_download_url);
}