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rust-clippy/tests/ui/string_add.rs

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//@aux-build:proc_macros.rs
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//@no-rustfix
extern crate proc_macros;
use proc_macros::external;
#[warn(clippy::string_add)]
#[allow(clippy::string_add_assign, unused)]
fn main() {
// ignores assignment distinction
let mut x = String::new();
for _ in 1..3 {
x = x + ".";
}
let y = String::new();
let z = y + "...";
assert_eq!(&x, &z);
let mut x = 1;
x = x + 1;
assert_eq!(2, x);
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external!({
let y = "".to_owned();
let z = y + "...";
});
}