clap/clap_derive/tests/default_value.rs

20 lines
399 B
Rust
Raw Normal View History

use clap::Clap;
mod utils;
use utils::*;
#[test]
fn auto_default_value() {
#[derive(Clap, PartialEq, Debug)]
struct Opt {
#[clap(default_value)]
arg: i32,
}
assert_eq!(Opt { arg: 0 }, Opt::parse_from(&["test"]));
assert_eq!(Opt { arg: 1 }, Opt::parse_from(&["test", "1"]));
let help = get_long_help::<Opt>();
assert!(help.contains("[default: 0]"));
}