1  diff --git a/src/payment.rs b/src/payment.rs
2  index 1111111..2222222 100644
3  --- a/src/payment.rs
4  +++ b/src/payment.rs
5  @@ -1,5 +1,6 @@
6   pub fn authorize(amount: i64) -> bool {
7  +    println!("authorizing amount: {}", amount);
8       amount > 0
9   }