1 // Copyright 2018 Guillaume Pinot (@TeXitoi) <texitoi@texitoi.eu>,
2 // Kevin Knapp (@kbknapp) <kbknapp@gmail.com>, and
3 // Ana Hobden (@hoverbear) <operator@hoverbear.org>
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10 //
11 // This work was derived from Structopt (https://github.com/TeXitoi/structopt)
12 // commit#ea76fa1b1b273e65e3b0b1046643715b49bec51f which is licensed under the
13 // MIT/Apache 2.0 license.
14
15 use clap::Parser;
16
17 // Tests that clap_derive properly detects an `Option` field
18 // that results from a macro expansion
19 #[test]
use_option()20 fn use_option() {
21 macro_rules! expand_ty {
22 ($name:ident: $ty:ty) => {
23 #[derive(Parser)]
24 struct Outer {
25 #[arg(short, long)]
26 #[allow(dead_code)]
27 $name: $ty,
28 }
29 };
30 }
31
32 expand_ty!(my_field: Option<String>);
33 }
34
35 #[test]
issue_447()36 fn issue_447() {
37 macro_rules! Command {
38 ( $name:ident, [
39 #[$meta:meta] $var:ident($inner:ty)
40 ] ) => {
41 #[derive(Debug, PartialEq, clap::Parser)]
42 enum $name {
43 #[$meta]
44 $var($inner),
45 }
46 };
47 }
48
49 Command! {GitCmd, [
50 #[command(external_subcommand)]
51 Ext(Vec<String>)
52 ]}
53 }
54