clap/tests/derive/next/macros.rs

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// Copyright 2018 Guillaume Pinot (@TeXitoi) <texitoi@texitoi.eu>,
// Kevin Knapp (@kbknapp) <kbknapp@gmail.com>, and
// Ana Hobden (@hoverbear) <operator@hoverbear.org>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//
// This work was derived from Structopt (https://github.com/TeXitoi/structopt)
// commit#ea76fa1b1b273e65e3b0b1046643715b49bec51f which is licensed under the
// MIT/Apache 2.0 license.
use clap::Parser;
// Tests that clap_derive properly detects an `Option` field
// that results from a macro expansion
#[test]
fn use_option() {
macro_rules! expand_ty {
($name:ident: $ty:ty) => {
#[derive(Parser)]
struct Outer {
#[clap(short, long)]
#[allow(dead_code)]
$name: $ty,
}
};
}
expand_ty!(my_field: Option<String>);
}
#[test]
fn issue_447() {
macro_rules! Command {
( $name:ident, [
#[$meta:meta] $var:ident($inner:ty)
] ) => {
#[derive(Debug, PartialEq, clap::Parser)]
enum $name {
#[$meta]
$var($inner),
}
};
}
Command! {GitCmd, [
#[clap(external_subcommand)]
Ext(Vec<String>)
]}
}