test_nmount.rs - mozsearch

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use crate::*;

use nix::{

    errno::Errno,

    mount::{unmount, MntFlags, Nmount},

};

use std::{ffi::CString, fs::File, path::Path};

use tempfile::tempdir;

#[test]

fn ok() {

    require_mount!("nullfs");

    let mountpoint = tempdir().unwrap();

    let target = tempdir().unwrap();

    let _sentry = File::create(target.path().join("sentry")).unwrap();

    let fstype = CString::new("fstype").unwrap();

    let nullfs = CString::new("nullfs").unwrap();

    Nmount::new()

        .str_opt(&fstype, &nullfs)

        .str_opt_owned("fspath", mountpoint.path().to_str().unwrap())

        .str_opt_owned("target", target.path().to_str().unwrap())

        .nmount(MntFlags::empty())

        .unwrap();

    // Now check that the sentry is visible through the mountpoint

    let exists = Path::exists(&mountpoint.path().join("sentry"));

    // Cleanup the mountpoint before asserting

    unmount(mountpoint.path(), MntFlags::empty()).unwrap();

    assert!(exists);

#[test]

fn bad_fstype() {

    let mountpoint = tempdir().unwrap();

    let target = tempdir().unwrap();

    let _sentry = File::create(target.path().join("sentry")).unwrap();

    let e = Nmount::new()

        .str_opt_owned("fspath", mountpoint.path().to_str().unwrap())

        .str_opt_owned("target", target.path().to_str().unwrap())

        .nmount(MntFlags::empty())

        .unwrap_err();

    assert_eq!(e.error(), Errno::EINVAL);

    assert_eq!(e.errmsg(), Some("Invalid fstype"));