public function test_multiple_status_dont_clash()
 {
     $status1 = $this->status;
     $status2 = new Backup_Status('status2');
     $status1->start('darth', 'vadar');
     $status2->start('master', 'yoda');
     $this->assertNotEquals($status1->get_status_filepath(), $status2->get_status_filepath());
     $this->assertEquals('darth', $status1->get_backup_filename());
     $this->assertEquals('vadar', $status1->get_status());
     $this->assertEquals('master', $status2->get_backup_filename());
     $this->assertEquals('yoda', $status2->get_status());
 }