Add two Numbers

// a Rust program for adding  two numbers
fn main() {
    let  num1 = 5;
    let  num2 = 80;
    println!("The sum of {} and {} is {}", num1, num2, sum(num1,num2));
}
fn sum(num1: i32, num2: i32) -> i32{
    num1 + num2
}

#[test]
fn test_sum(){
    assert_eq!(sum(1,3), 4);
    assert_eq!(sum(150, 25), 175);
    assert_ne!(sum(2,7),10);
}