clap/tests/app_from_crate.rs
2020-02-02 08:50:40 +01:00

26 lines
645 B
Rust

use clap::{app_from_crate, ErrorKind};
static EVERYTHING: &str = "clap {{version}}
Kevin K. <kbknapp@gmail.com>
A simple to use, efficient, and full-featured Command Line Argument Parser
USAGE:
clap
FLAGS:
-h, --help Prints help information
-V, --version Prints 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::HelpDisplayed);
assert_eq!(
err.message,
EVERYTHING.replace("{{version}}", env!("CARGO_PKG_VERSION"))
);
}