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

#[test]
fn os_vfs_paths_components_positive() {
    let mut state = paths::PathState::new();
    let absolute = state.chdir("/veri/çalışma/".as_bytes()).unwrap();
    assert_eq!(absolute.depth(), 2);
    assert_eq!(absolute.component(0), Some("veri"));
    assert_eq!(absolute.component(1), Some("çalışma"));
    assert_eq!(absolute.component(2), None);
    assert_eq!(state.generation, 1);
    let relative = state.chdir("../örnek/./belge".as_bytes()).unwrap();
    assert_eq!(relative.depth(), 3);
    assert_eq!(relative.component(0), Some("veri"));
    assert_eq!(relative.component(1), Some("örnek"));
    assert_eq!(relative.component(2), Some("belge"));
    assert_eq!(state.cwd, relative);
    assert_eq!(state.generation, 2);
    let root = state.resolve(b"/").unwrap();
    assert_eq!(root.depth(), 0);
    assert_eq!(state.cwd, relative);
}

#[test]
fn os_vfs_paths_components_negative() {
    let mut state = paths::PathState::new();
    state.chdir("/sağlam".as_bytes()).unwrap();
    let before = state;
    assert_eq!(state.chdir(&[b'/', 0xff]), Err(paths::Error::InvalidUtf8));
    assert_eq!(state, before);
    let deep = format!("/{}", vec!["x"; paths::MAX_COMPONENTS + 1].join("/"));
    assert_eq!(state.chdir(deep.as_bytes()), Err(paths::Error::TooDeep));
    assert_eq!(state, before);
    assert_eq!(state.chdir(b"/../no"), Err(paths::Error::AboveRoot));
    assert_eq!(state, before);
    assert_eq!(state.chdir(b"/bad\0name"), Err(paths::Error::InvalidComponent));
    assert_eq!(state, before);
    assert_eq!(state.chdir(&[]), Err(paths::Error::EmptyInput));
    assert_eq!(state, before);
    let long_component = format!("/{}", "x".repeat(paths::MAX_COMPONENT_BYTES + 1));
    assert_eq!(state.chdir(long_component.as_bytes()), Err(paths::Error::TooLong));
    assert_eq!(state, before);
    let long_path = vec![b'x'; paths::MAX_PATH_BYTES + 1];
    assert_eq!(state.chdir(&long_path), Err(paths::Error::TooLong));
    assert_eq!(state, before);
}