// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#![allow(dead_code)]

// ANCHOR: solution
use std::cmp::Ordering;

fn min<T: Ord>(l: T, r: T) -> T {
    match l.cmp(&r) {
        Ordering::Less | Ordering::Equal => l,
        Ordering::Greater => r,
    }
}

// ANCHOR: tests
#[test]
fn integers() {
    assert_eq!(min(0, 10), 0);
    assert_eq!(min(500, 123), 123);
}

#[test]
fn chars() {
    assert_eq!(min('a', 'z'), 'a');
    assert_eq!(min('7', '1'), '1');
}

#[test]
fn strings() {
    assert_eq!(min("hello", "goodbye"), "goodbye");
    assert_eq!(min("bat", "armadillo"), "armadillo");
}
// ANCHOR_END: tests
