public function testBackupIsFinished()
{
$backup = $this->_getBackup(['size' => 12345, 'finish_time' => 123456]);
$this->assertTrue($backup->backupIsFinished());
$backup = $this->_getBackup(['size' => 12345, 'timestamp' => 123456]);
$this->assertTrue($backup->backupIsFinished());
$backup = $this->_getBackup(['size' => 12345]);
$this->assertFalse($backup->backupIsFinished());
$backup = $this->_getBackup(['finish_time' => 12345]);
$this->assertFalse($backup->backupIsFinished());
$backup = $this->_getBackup(['timestamp' => 12345]);
$this->assertFalse($backup->backupIsFinished());
}