clap/tests/app_from_crate.rs
2021-11-17 14:27:26 -06:00

30 lines
694 B
Rust

#![cfg(feature = "cargo")]
use clap::{app_from_crate, ErrorKind};
static EVERYTHING: &str = "clap {{version}}
Kevin K. <kbknapp@gmail.com>:Clap Maintainers
A simple to use, efficient, and full-featured Command Line Argument Parser
USAGE:
clap
OPTIONS:
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn app_from_crate() {
let res = app_from_crate!().try_get_matches_from(vec!["clap", "--help"]);
assert!(res.is_err());
let err = res.unwrap_err();
assert_eq!(err.kind, ErrorKind::DisplayHelp);
assert_eq!(
err.to_string(),
EVERYTHING.replace("{{version}}", env!("CARGO_PKG_VERSION"))
);
}