pub fn handify(input: &str) -> String {
    let input = input.to_uppercase();
    let input = input.trim().to_owned();
    let mut input = input.replace(" ", " 👏 ");
    if !input.is_empty() {
        input = format!("👏 {} 👏", input);
    }
    input
}

#[test]
fn handify_test_no_trailing_spaces() {
    let input = "hello world";
    assert_eq!(handify(input), "👏 HELLO 👏 WORLD 👏");
}

#[test]
fn handify_test_with_trailing_spaces() {
    let input = " hello world ";
    assert_eq!(handify(input), "👏 HELLO 👏 WORLD 👏")
}

#[test]
fn handify_test_empty_string() {
    let input = "";
    assert_eq!(handify(input), "");
}