#[path = "../../../os-turkfs-namespace/src/lib.rs"]
mod namespace;
use namespace::{Error, Kind, Namespace};

#[test]
fn os_turkfs_namespace_create_positive() {
    let mut ns = Namespace::<4>::new(4).unwrap();
    let dir = ns.create(1, b"docs", Kind::Directory).unwrap();
    let file = ns.create(dir, b"readme", Kind::File).unwrap();
    assert_eq!((dir, file), (2, 3));
    assert_eq!(ns.lookup(1, b"docs").unwrap().kind, Kind::Directory);
    assert_eq!(ns.lookup(dir, b"readme").unwrap().inode, file);
    assert_eq!(ns.lookup(1, b"readme"), None);
    assert_eq!(ns.used(), 2);
    assert_eq!(ns.allocated_bits(), 0b1111);
    let root_file = ns.create(1, b"readme", Kind::File).unwrap();
    assert_ne!(root_file, file);
    assert_eq!(ns.used(), 3);
}

#[test]
fn os_turkfs_namespace_create_negative() {
    let mut ns = Namespace::<4>::new(1).unwrap();
    let dir = ns.create(1, b"docs", Kind::Directory).unwrap();
    let before = ns;
    assert_eq!(ns.create(1, b"docs", Kind::File), Err(Error::Exists));
    assert_eq!(ns, before);
    assert_eq!(ns.create(dir, b"hidden", Kind::File), Err(Error::Quota));
    assert_eq!(ns, before);
    assert_eq!(ns.lookup(dir, b"hidden"), None);
    assert_eq!(ns.allocated_bits(), 7);
    assert_eq!(ns.create(55, b"orphan", Kind::File), Err(Error::ParentMissing));
    for name in [b"".as_slice(), b".", b"..", b"a/b", b"nul\0", b"01234567890123456", &[0xff]] {
        assert_eq!(ns.create(1, name, Kind::File), Err(Error::InvalidName));
        assert_eq!(ns, before);
    }
    let mut full = Namespace::<1>::new(1).unwrap();
    let file = full.create(1, b"file", Kind::File).unwrap();
    let before_full = full;
    assert_eq!(full.create(file, b"child", Kind::File), Err(Error::NotDirectory));
    assert_eq!(full.create(1, b"extra", Kind::Directory), Err(Error::NoSpace));
    assert_eq!(full, before_full);
}