src/test/run-pass/nul-characters.rs

   1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12 pub fn main()
  13 {
  14     let all_nuls1 = "\0\x00\u{0}\u{0}";
  15     let all_nuls2 = "\u{0}\u{0}\x00\0";
  16     let all_nuls3 = "\u{0}\u{0}\x00\0";
  17     let all_nuls4 = "\x00\u{0}\0\u{0}";
  18
  19     // sizes for two should suffice
  20     assert_eq!(all_nuls1.len(), 4);
  21     assert_eq!(all_nuls2.len(), 4);
  22
  23     // string equality should pass between the strings
  24     assert_eq!(all_nuls1, all_nuls2);
  25     assert_eq!(all_nuls2, all_nuls3);
  26     assert_eq!(all_nuls3, all_nuls4);
  27
  28     // all extracted characters in all_nuls are equivalent to each other
  29     for c1 in all_nuls1.chars()
  30     {
  31         for c2 in all_nuls1.chars()
  32         {
  33             assert_eq!(c1,c2);
  34         }
  35     }
  36
  37     // testing equality between explicit character literals
  38     assert_eq!('\0', '\x00');
  39     assert_eq!('\u{0}', '\x00');
  40     assert_eq!('\u{0}', '\u{0}');
  41
  42     // NUL characters should make a difference
  43     assert!("Hello World" != "Hello \0World");
  44     assert!("Hello World" != "Hello World\0");
  45 }