host/start-vm/tests/vm_command-multiple-disks.rs


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// SPDX-License-Identifier: EUPL-1.2+
// SPDX-FileCopyrightText: 2022-2023 Alyssa Ross <hi@alyssa.is>

use std::ffi::{OsStr, OsString};
use std::fs::{create_dir, create_dir_all, File};
use std::os::unix::fs::symlink;

use start_vm::vm_command;
use test_helper::{contains_seq, TempDir};

fn main() -> std::io::Result<()> {
    let tmp_dir = TempDir::new()?;

    let service_dir = tmp_dir.path().join("testvm");
    let vm_config = tmp_dir.path().join("svc/data/testvm");

    create_dir(&service_dir)?;
    create_dir_all(&vm_config)?;
    File::create(vm_config.join("vmlinux"))?;
    create_dir(vm_config.join("blk"))?;
    symlink("/dev/null", vm_config.join("blk/disk1.img"))?;
    symlink("/dev/null", vm_config.join("blk/disk2.img"))?;

    let command = vm_command(service_dir, &tmp_dir.path().join("svc/data")).unwrap();
    let args: Box<[_]> = command.get_args().collect();

    for i in 1..=2 {
        let image_path = tmp_dir
            .path()
            .join(format!("svc/data/testvm/blk/disk{i}.img"));
        let mut expected_disk_arg = OsString::from("path=");
        expected_disk_arg.push(image_path);
        expected_disk_arg.push(",readonly=on");

        let expected_args = [OsStr::new("--disk"), &expected_disk_arg];
        assert!(contains_seq(&args, &expected_args));
    }

    Ok(())
}