use day8::combination;

#[test]
fn example1() {
    assert_eq!(
        combination("23"),
        vec!["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"]
    );
}

#[test]
fn example2() {
    assert_eq!(combination(""), vec![] as Vec<String>);
}

#[test]
fn example3() {
    assert_eq!(combination("2"), vec!["a", "b", "c"]);
}