clap/tests/builder/app_from_crate.rs
Ed Page 9e64387ef0 revert(help): Partial revert of 3c049b4
The extra whitespace was targeted at machine processing for a subset of
users for a subset of runs of CLIs.  On the other hand, there is a lot
of concern over the extra verbose output.

A user can set the help template for man, if desired.  They can even do
something (env? feature flag?) to make it only run when doing man
generation.  We also have #3174 in the works.

So let's focus on the end-user reading `--help`.  People wanting to use
`help2man` have workarounds to do what they need.

Fixes #3096
2021-12-15 10:36:59 -06:00

27 lines
646 B
Rust

#![cfg(feature = "cargo")]
use clap::{app_from_crate, ErrorKind};
static EVERYTHING: &str = "clap {{version}}
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"))
);
}