belajar_rust_crate_lib/
lib.rs

1#[allow(unused_imports)]
2use chrono::{Local, Timelike};
3
4#[cfg(feature = "hello")]
5pub fn say_hello(name: &str) -> String {
6    format!("Hello, {}", name)
7}
8
9#[cfg(feature = "time")]
10pub fn get_timestamp() -> String {
11    let now = Local::now();
12    let formatted_time = now.format("%H:%M");
13    format!("{}", formatted_time)
14}
15
16#[cfg(feature = "greet")]
17pub fn say_greeting() -> String {
18    let hour = Local::now().hour();
19    let greet = match hour {
20        11..=14 => "Afternoon",
21        15..=20 => "Evening",
22        21..=24 => "Night",
23        _ => "Morning",
24    };
25    format!("Good {}", greet)
26}
27
28// #[cfg(test)]
29// mod tests {
30//     use super::*;
31
32//     #[test]
33//     fn test_hello_lib() {
34//         let hello = say_hello("dedy");
35//         assert_eq!(hello, "Hello, dedy");
36//     }
37
38//     #[test]
39//     fn test_get_timestamp() {
40//         let sekarang = Local::now().format("%H:%M");
41//         assert_eq!(format!("{}", sekarang), get_timestamp());
42//     }
43
44//     #[test]
45//     fn test_greet_lib() {
46//         let greet = say_greeting();
47//         assert_ne!(greet, "");
48//     }
49// }
50
51// test #[cfg(test)] will not work when using #[cfg(feature = "xxx")]
52// soo how to test: cargo test --features hello
53//
belajar_rust_crate_lib/lib.rs

belajar_rust_crate_lib/
lib.rs
