rust/tests/ui/nul-characters.rs

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//@ run-pass
pub fn main()
{
let all_nuls1 = "\0\x00\u{0}\u{0}";
let all_nuls2 = "\u{0}\u{0}\x00\0";
let all_nuls3 = "\u{0}\u{0}\x00\0";
let all_nuls4 = "\x00\u{0}\0\u{0}";
// sizes for two should suffice
assert_eq!(all_nuls1.len(), 4);
assert_eq!(all_nuls2.len(), 4);
// string equality should pass between the strings
assert_eq!(all_nuls1, all_nuls2);
assert_eq!(all_nuls2, all_nuls3);
assert_eq!(all_nuls3, all_nuls4);
// all extracted characters in all_nuls are equivalent to each other
for c1 in all_nuls1.chars()
{
for c2 in all_nuls1.chars()
{
assert_eq!(c1,c2);
}
}
// testing equality between explicit character literals
assert_eq!('\0', '\x00');
assert_eq!('\u{0}', '\x00');
assert_eq!('\u{0}', '\u{0}');
// NUL characters should make a difference
assert!("Hello World" != "Hello \0World");
assert!("Hello World" != "Hello World\0");
}