1 // run-pass
2 
main()3 pub fn main()
4 {
5     let all_nuls1 = "\0\x00\u{0}\u{0}";
6     let all_nuls2 = "\u{0}\u{0}\x00\0";
7     let all_nuls3 = "\u{0}\u{0}\x00\0";
8     let all_nuls4 = "\x00\u{0}\0\u{0}";
9 
10     // sizes for two should suffice
11     assert_eq!(all_nuls1.len(), 4);
12     assert_eq!(all_nuls2.len(), 4);
13 
14     // string equality should pass between the strings
15     assert_eq!(all_nuls1, all_nuls2);
16     assert_eq!(all_nuls2, all_nuls3);
17     assert_eq!(all_nuls3, all_nuls4);
18 
19     // all extracted characters in all_nuls are equivalent to each other
20     for c1 in all_nuls1.chars()
21     {
22         for c2 in all_nuls1.chars()
23         {
24             assert_eq!(c1,c2);
25         }
26     }
27 
28     // testing equality between explicit character literals
29     assert_eq!('\0', '\x00');
30     assert_eq!('\u{0}', '\x00');
31     assert_eq!('\u{0}', '\u{0}');
32 
33     // NUL characters should make a difference
34     assert!("Hello World" != "Hello \0World");
35     assert!("Hello World" != "Hello World\0");
36 }
37