| // Copyright 2012 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. |
| |
| // Issue 483 - Assignment expressions result in nil |
| |
| fn test_assign() { |
| let mut x: isize; |
| let y: () = x = 10; |
| assert_eq!(x, 10); |
| assert_eq!(y, ()); |
| let mut z = x = 11; |
| assert_eq!(x, 11); |
| assert_eq!(z, ()); |
| z = x = 12; |
| assert_eq!(x, 12); |
| assert_eq!(z, ()); |
| } |
| |
| fn test_assign_op() { |
| let mut x: isize = 0; |
| let y: () = x += 10; |
| assert_eq!(x, 10); |
| assert_eq!(y, ()); |
| let mut z = x += 11; |
| assert_eq!(x, 21); |
| assert_eq!(z, ()); |
| z = x += 12; |
| assert_eq!(x, 33); |
| assert_eq!(z, ()); |
| } |
| |
| pub fn main() { test_assign(); test_assign_op(); } |
