use super::*;
#[test]
fn concat_both_provided() {
let output = concat("1::2", "3");
assert_eq!(output, "1::2::3");
}
#[test]
fn concat_parent_provided() {
let output = concat("1::2", "");
assert_eq!(output, "1::2");
}
#[test]
fn concat_current_provided() {
let output = concat("", "3::4");
assert_eq!(output, "3::4");
}