clap/tests/builder/cargo.rs

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#![cfg(feature = "cargo")]
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use clap::{
crate_authors, crate_description, crate_name, crate_version, error::ErrorKind, Command,
};
use crate::utils;
static DESCRIPTION_ONLY: &str = "prog 1
A simple to use, efficient, and full-featured Command Line Argument Parser
Usage: prog
Options:
-h, --help Print help information
-V, --version Print version information
";
static AUTHORS_ONLY: &str = "prog 1
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Usage: prog
Options:
-h, --help Print help information
-V, --version Print version information
";
#[test]
fn crate_version() {
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let res = Command::new("prog")
.version(crate_version!())
.help_template(utils::FULL_TEMPLATE)
.try_get_matches_from(vec!["prog", "--version"]);
assert!(res.is_err());
let err = res.unwrap_err();
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assert_eq!(err.kind(), ErrorKind::DisplayVersion);
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assert_eq!(
err.to_string(),
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format!("prog {}\n", env!("CARGO_PKG_VERSION"))
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);
}
#[test]
fn crate_description() {
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let res = Command::new("prog")
.version("1")
.about(crate_description!())
.help_template(utils::FULL_TEMPLATE)
.try_get_matches_from(vec!["prog", "--help"]);
assert!(res.is_err());
let err = res.unwrap_err();
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assert_eq!(err.kind(), ErrorKind::DisplayHelp);
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assert_eq!(err.to_string(), DESCRIPTION_ONLY);
}
#[test]
fn crate_authors() {
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let res = Command::new("prog")
.version("1")
.author(crate_authors!())
.help_template(utils::FULL_TEMPLATE)
.try_get_matches_from(vec!["prog", "--help"]);
assert!(res.is_err());
let err = res.unwrap_err();
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assert_eq!(err.kind(), ErrorKind::DisplayHelp);
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assert_eq!(err.to_string(), AUTHORS_ONLY);
}
#[test]
fn crate_authors_with_sep() {
let res = Command::new("prog")
.version("1")
.author(crate_authors!(", "))
.help_template(utils::FULL_TEMPLATE)
.try_get_matches_from(vec!["prog", "--help"]);
assert!(res.is_err());
let err = res.unwrap_err();
assert_eq!(err.kind(), ErrorKind::DisplayHelp);
assert_eq!(err.to_string(), AUTHORS_ONLY);
}
#[test]
fn crate_name() {
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let res = Command::new(crate_name!())
.help_template(utils::FULL_TEMPLATE)
.version("3.0")
.try_get_matches_from(vec!["clap", "--version"]);
assert!(res.is_err());
let err = res.unwrap_err();
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assert_eq!(err.kind(), ErrorKind::DisplayVersion);
assert_eq!(err.to_string(), "clap 3.0\n");
}