// Write a function `rev_str` that takes a `&str` as a parameter, and returns a string with its words reversed.
use reverse_string::rev_str;

#[allow(dead_code)]
fn main() {
	println!("{}", rev_str("Hello, world!"));
	println!("{}", rev_str("Hello, my name is Roman"));
	println!("{}", rev_str("I have a nice car!"));
	println!("{}", rev_str("How old are You"));
	println!("{}", rev_str("ex: this is an example água"));
}


#[allow(dead_code)]
fn test_reverse(input: &str, expected: &str) {
	assert_eq!(&rev_str(input), expected);
}

#[test]
// testing just one word
fn test_simple_word() {
	test_reverse("robot", "tobor");
	test_reverse("Ramen", "nemaR");
	test_reverse("I'm hungry!", "!yrgnuh m'I");
	test_reverse("racecar", "racecar");
	test_reverse("drawer", "reward");
	test_reverse("子猫", "猫子");
	test_reverse("", "");
}

#[test]
// testing two or more words
fn test_more_than_one() {
	test_reverse("Hello, world!", "!dlrow ,olleH");
	test_reverse("Hello, my name is Roman", "namoR si eman ym ,olleH");
	test_reverse("I have a nice car!", "!rac ecin a evah I");
	test_reverse("How old are You", "uoY era dlo woH");
	test_reverse("ex: this is an example água", "augá elpmaxe na si siht :xe");
}