clap/tests/opts.rs

extern crate clap;

use clap::{App, Arg};

#[test]
fn stdin_char() {
    let r = App::new("opts")
        .arg( Arg::from_usage("-f [flag] 'some flag'") )
        .get_matches_from_safe(vec!["", "-f", "-"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("f"));
    assert_eq!(m.value_of("f").unwrap(), "-");
}

#[test]
fn opts_using_short() {
    let r = App::new("opts")
        .args(&[
            Arg::from_usage("-f [flag] 'some flag'"),
            Arg::from_usage("-c [color] 'some other flag'")
            ])
        .get_matches_from_safe(vec!["", "-f", "some", "-c", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("f"));
    assert_eq!(m.value_of("f").unwrap(), "some");
    assert!(m.is_present("c"));
    assert_eq!(m.value_of("c").unwrap(), "other");
}

#[test]
fn lots_o_vals() {
    let r = App::new("opts")
        .arg(
            Arg::from_usage("-o [opt]... 'some opt'"),
            )
        .get_matches_from_safe(vec!["", "-o",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            "some", "some", "some", "some", "some", "some", "some", "some", "some", "some", "some",
            ]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("o"));
    assert_eq!(m.values_of("o").unwrap().collect::<Vec<_>>().len(), 297); // i.e. more than u8
}

#[test]
fn opts_using_long_space() {
    let r = App::new("opts")
        .args(&[
            Arg::from_usage("--flag [flag] 'some flag'"),
            Arg::from_usage("--color [color] 'some other flag'")
            ])
        .get_matches_from_safe(vec!["", "--flag", "some", "--color", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "some");
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
}

#[test]
fn opts_with_empty_values() {
    let r = App::new("opts")
        .arg_from_usage("--flag [flag]... 'some flag'")
        .get_matches_from_safe(vec!["", "--flag", "", "test"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.values_of("flag").unwrap().collect::<Vec<_>>(), ["", "test"]);
}

#[test]
fn opts_using_long_equals() {
    let r = App::new("opts")
        .args(&[
            Arg::from_usage("--flag [flag] 'some flag'"),
            Arg::from_usage("--color [color] 'some other flag'")
            ])
        .get_matches_from_safe(vec!["", "--flag=some", "--color=other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "some");
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
}

#[test]
fn opts_using_mixed() {
    let r = App::new("opts")
        .args(&[
            Arg::from_usage("-f, --flag [flag] 'some flag'"),
            Arg::from_usage("-c, --color [color] 'some other flag'")
            ])
        .get_matches_from_safe(vec!["", "-f", "some", "--color", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "some");
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
}

#[test]
fn opts_using_mixed2() {
    let r = App::new("opts")
        .args(&[
            Arg::from_usage("-f, --flag [flag] 'some flag'"),
            Arg::from_usage("-c, --color [color] 'some other flag'")
            ])
        .get_matches_from_safe(vec!["", "--flag=some", "-c", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "some");
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
}

#[test]
fn default_values_default() {
    let r = App::new("df")
        .arg( Arg::from_usage("-o [opt] 'some opt'")
            .default_value("default"))
        .get_matches_from_safe(vec![""]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("o"));
    assert_eq!(m.value_of("o").unwrap(), "default");
}

#[test]
fn default_values_user_value() {
    let r = App::new("df")
        .arg( Arg::from_usage("-o [opt] 'some opt'")
            .default_value("default"))
        .get_matches_from_safe(vec!["", "-o", "value"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("o"));
    assert_eq!(m.value_of("o").unwrap(), "value");
}