Function with_default_file

block/src/qcow/mod.rs:2437–2445

(file_size: u64, direct: bool, mut testfn: F)

    }

    fn with_default_file<F>(file_size: u64, direct: bool, mut testfn: F)
    where
        F: FnMut(QcowFile),
    {
        let tmp: RawFile = RawFile::new(TempFile::new().unwrap().into_file(), direct);
        let qcow_file = QcowFile::new(tmp, 3, file_size, true).unwrap();

        testfn(qcow_file); // File closed when the function exits.
    }

    #[test]
    fn write_read_start_backing_v2() {