clap_fmt 0.1.1

Serialize a clap arg parser into the command-line arguments.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

use clap::Parser;
use clap_fmt::FmtArgs;
use serde::Serialize;

#[derive(Parser, Debug, Serialize)]
struct CliWithRequired {
    #[arg(short, long)]
    required_str: String,

    #[arg(short, long)]
    optional_str: Option<String>,

    #[arg(short, long, default_value = "default")]
    with_default: String,

    #[arg(long, required = true)]
    must_have: String,
}

#[test]
fn test_required_fields() {
    let cli = CliWithRequired {
        required_str: "value".to_string(),
        optional_str: None,
        with_default: "custom".to_string(),
        must_have: "present".to_string(),
    };

    let result = cli.to_args();
    assert_eq!(result, vec!["--required-str", "value", "--with-default", "custom", "--must-have", "present"]);
}

#[test]
fn test_default_values_not_included() {
    let cli = CliWithRequired {
        required_str: "value".to_string(),
        optional_str: None,
        with_default: "default".to_string(), // Using the default value
        must_have: "present".to_string(),
    };

    let result = cli.to_args();
    assert_eq!(result, vec!["--required-str", "value", "--must-have", "present"]);
}

#[test]
fn test_optional_with_value() {
    let cli = CliWithRequired {
        required_str: "req".to_string(),
        optional_str: Some("opt".to_string()),
        with_default: "default".to_string(),
        must_have: "must".to_string(),
    };

    let result = cli.to_args();
    assert_eq!(result, vec!["--required-str", "req", "--optional-str", "opt", "--must-have", "must"]);
}