#[path = "../../../os-vfs-paths/src/lib.rs"]
mod os_vfs_paths;
#[path = "../../../os-vfs-symlink/src/lib.rs"]
mod symlink;

fn namespace() -> os_vfs_paths::MountNamespace {
    let resolver = os_vfs_paths::PathState::new();
    let root = resolver.resolve(b"/sandbox").unwrap();
    let first = os_vfs_paths::Mount::new(
        resolver.resolve(b"/sandbox/veri").unwrap(), 1).unwrap();
    let second = os_vfs_paths::Mount::new(
        resolver.resolve(b"/sandbox/ara").unwrap(), 2).unwrap();
    os_vfs_paths::MountNamespace::new(root, first, second).unwrap()
}

#[test]
fn os_vfs_paths_symlink_positive() {
    let namespace = namespace();
    let before = namespace;
    let first = symlink::Link::new(&namespace, b"/veri/kisa", b"/ara/ikinci").unwrap();
    let second = symlink::Link::new(&namespace, b"/ara/ikinci", b"/ara/dosya").unwrap();
    let table = symlink::SymlinkTable::new(first, second).unwrap();
    let resolution = table.resolve(&namespace, b"/veri/kisa").unwrap();
    assert_eq!(resolution.hops, 2);
    assert_eq!(resolution.route.volume, 2);
    assert_eq!(resolution.route.relative_depth, 1);
    assert_eq!(resolution.route.path.component(2), Some("dosya"));
    assert_eq!(namespace, before);
}

#[test]
fn os_vfs_paths_symlink_negative() {
    let namespace = namespace();
    let before = namespace;
    let first = symlink::Link::new(&namespace, b"/veri/dongu", b"/veri/dongu").unwrap();
    let second = symlink::Link::new(&namespace, b"/ara/ikinci", b"/ara/dosya").unwrap();
    let table = symlink::SymlinkTable::new(first, second).unwrap();
    assert_eq!(table.resolve(&namespace, b"/veri/dongu"),
        Err(symlink::Error::Eloop(symlink::MAX_SYMLINK_HOPS)));
    assert_eq!(namespace, before);
    assert_eq!(symlink::Link::new(&namespace, b"/veri/kisa", b"/../../../disari"),
        Err(symlink::Error::Path(os_vfs_paths::Error::AboveRoot)));
    assert_eq!(namespace, before);
    assert_eq!(table.resolve(&namespace, b"/ara/dosya").unwrap().hops, 0);
}