getopt2 0.1.0

Zero dependency strict command line argument parser
Documentation 
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/*
 * Copyright (c) Radim Kolar 2013, 2018, 2023.
 * SPDX-License-Identifier: MIT
 *
 * getopt2 library is licensed under MIT license:
 *   https://spdx.org/licenses/MIT.html
*/

/* testsuite for validate() API function */

use crate::{new, validate};

/** converts iterable &str into String Vec */
fn toStringVec<'a>(iter: impl IntoIterator<Item = &'a str>) -> Vec<String> {
   iter.into_iter().map(|s| s.to_string()).collect()
}

// validate api tests

#[test]
fn validate_unknown_option_without_argument() {
   let g = new(toStringVec(["one", "two", "-c", "-a"]), "a");
   assert!(g.is_ok());
   let g = g.unwrap();
   assert_eq!(g.arguments, toStringVec(["one", "two", "-c"]));
   assert!(validate(g).is_err());
}

#[test]
fn validate_unknown_option_with_argument() {
   let g = new(toStringVec(["one", "two", "-c", "kalo"]), "a");
   assert!(g.is_ok());
   assert!(validate(g.unwrap()).is_err());
}

#[test]
fn validate_required_argument_missing() {
   let g = new(toStringVec(["one", "two", "-c"]), "c:");
   assert!(g.is_ok());
   assert!(validate(g.unwrap()).is_err());
}

#[test]
fn validate_no_options_on_cmdline_but_options_defined() {
   let g = new(toStringVec(["one", "two", "three"]), "abc:");
   assert!(g.is_ok());
   let g = validate(g.unwrap());
   assert!(g.is_ok());
   assert_eq!(g.unwrap().arguments.len(), 3);
}