rust/tests/mut_mut_macro.rs

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#![feature(plugin)]
#![plugin(clippy, regex_macros)]
#[macro_use]
extern crate lazy_static;
extern crate regex;
use std::collections::HashMap;
#[test]
#[deny(mut_mut)]
fn test_regex() {
let pattern = regex!(r"^(?P<level>[#]+)\s(?P<title>.+)$");
assert!(pattern.is_match("# headline"));
}
#[test]
#[deny(mut_mut)]
#[allow(unused_variables, unused_mut)]
fn test_lazy_static() {
lazy_static! {
static ref MUT_MAP : HashMap<usize, &'static str> = {
let mut m = HashMap::new();
let mut zero = &mut &mut "zero";
m.insert(0, "zero");
m
};
static ref MUT_COUNT : usize = MUT_MAP.len();
}
assert!(*MUT_COUNT == 1);
}