rust-clippy/tests/ui/unnecessary_owned_empty_strings.rs

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#![warn(clippy::unnecessary_owned_empty_strings)]
fn ref_str_argument(_value: &str) {}
#[allow(clippy::ptr_arg)]
fn ref_string_argument(_value: &String) {}
fn main() {
// should be linted
ref_str_argument(&String::new());
// should be linted
#[allow(clippy::manual_string_new)]
ref_str_argument(&String::from(""));
// should not be linted
ref_str_argument("");
// should not be linted
ref_string_argument(&String::new());
}