rust/src/test/run-pass-fulldeps/empty-struct-braces-derive.rs

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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// `#[derive(Trait)]` works for empty structs/variants with braces
#![feature(rustc_private)]
extern crate serialize as rustc_serialize;
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash,
Default, Debug, RustcEncodable, RustcDecodable)]
struct S {}
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash,
Debug, RustcEncodable, RustcDecodable)]
enum E {
V {},
U,
}
fn main() {
let s = S {};
let s1 = s;
let s2 = s.clone();
assert_eq!(s, s1);
assert_eq!(s, s2);
assert!(!(s < s1));
assert_eq!(format!("{:?}", s), "S");
let e = E::V {};
let e1 = e;
let e2 = e.clone();
assert_eq!(e, e1);
assert_eq!(e, e2);
assert!(!(e < e1));
assert_eq!(format!("{:?}", e), "V");
}