clap/tests/default_vals.rs

extern crate clap;
extern crate regex;

include!("../clap-test.rs");

use clap::{App, Arg};

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

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

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

// --- Default if arg is present 

#[test]
fn default_if_arg_present_no_default() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec!["", "--opt", "some"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "default");
}

#[test]
fn default_if_arg_present_no_default_user_override() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec!["", "--opt", "some", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "other");
}

#[test]
fn default_if_arg_present_no_arg_with_default() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec![""]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "first");
}

#[test]
fn default_if_arg_present_with_default() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec!["", "--opt", "some"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "default");
}

#[test]
fn default_if_arg_present_with_default_user_override() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec!["", "--opt", "some", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "other");
}

#[test]
fn default_if_arg_present_no_arg_with_default_user_override() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_if("opt", None, "default"))
        .get_matches_from_safe(vec!["", "other"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "other");
}

// Conditional Default Values

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

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

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

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

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

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

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

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

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

// Multiple conditions

#[test]
fn default_ifs_arg_present() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("--flag 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_ifs(&[
                ("opt", Some("some"), "default"),
                ("flag", None, "flg"),
            ]))
        .get_matches_from_safe(vec!["", "--flag"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "flg");
}

#[test]
fn default_ifs_arg_present_user_override() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("--flag 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_ifs(&[
                ("opt", Some("some"), "default"),
                ("flag", None, "flg"),
            ]))
        .get_matches_from_safe(vec!["", "--flag", "value"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "value");
}

#[test]
fn default_ifs_arg_present_order() {
    let r = App::new("df")
        .arg( Arg::from_usage("--opt [FILE] 'some arg'"))
        .arg( Arg::from_usage("--flag 'some arg'"))
        .arg( Arg::from_usage("[arg] 'some arg'")
            .default_value("first")
            .default_value_ifs(&[
                ("opt", Some("some"), "default"),
                ("flag", None, "flg"),
            ]))
        .get_matches_from_safe(vec!["", "--opt=some", "--flag"]);
    assert!(r.is_ok());
    let m = r.unwrap();
    assert!(m.is_present("arg"));
    assert_eq!(m.value_of("arg").unwrap(), "default");
}