extern crate clap;

use clap::{App, Arg, ErrorKind};

#[test]
fn flag_overrides_itself() {
    let res = App::new("posix")
                .arg(Arg::from_usage("--flag  'some flag'").overrides_with("flag"))
                .get_matches_from_safe(vec!["", "--flag", "--flag"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.occurrences_of("flag"), 1);
}

#[test]
fn mult_flag_overrides_itself() {
    let res = App::new("posix")
                .arg(Arg::from_usage("--flag...  'some flag'").overrides_with("flag"))
                .get_matches_from_safe(vec!["", "--flag", "--flag", "--flag", "--flag"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("flag"));
    assert_eq!(m.occurrences_of("flag"), 4);
}

#[test]
fn option_overrides_itself() {
    let res = App::new("posix")
                .arg(Arg::from_usage("--opt [val] 'some option'").overrides_with("opt"))
                .get_matches_from_safe(vec!["", "--opt=some", "--opt=other"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("opt"));
    assert_eq!(m.occurrences_of("opt"), 1);
    assert_eq!(m.value_of("opt"), Some("other"));
}

#[test]
fn mult_option_require_delim_overrides_itself() {
    let res = App::new("posix")
                .arg(Arg::from_usage("--opt [val]... 'some option'")
                    .overrides_with("opt")
                    .number_of_values(1)
                    .require_delimiter(true))
                .get_matches_from_safe(vec!["", "--opt=some", "--opt=other", "--opt=one,two"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("opt"));
    assert_eq!(m.occurrences_of("opt"), 3);
    assert_eq!(m.values_of("opt").unwrap().collect::<Vec<_>>(), &["some", "other", "one", "two"]);
}

#[test]
fn mult_option_overrides_itself() {
    let res = App::new("posix")
                .arg(Arg::from_usage("--opt [val]... 'some option'")
                    .overrides_with("opt"))
                .get_matches_from_safe(vec!["", "--opt", "first", "overides", "--opt", "some", "other", "val"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("opt"));
    assert_eq!(m.occurrences_of("opt"), 2);
    assert_eq!(m.values_of("opt").unwrap().collect::<Vec<_>>(), &["first", "overides", "some", "other", "val"]);
}

#[test]
fn option_use_delim_false_override_itself() {

    let m = App::new("posix")
                .arg(Arg::from_usage("--opt [val] 'some option'")
                    .overrides_with("opt")
                    .use_delimiter(false))
                .get_matches_from(vec!["", "--opt=some,other", "--opt=one,two"]);
    assert!(m.is_present("opt"));
    assert_eq!(m.occurrences_of("opt"), 1);
    assert_eq!(m.values_of("opt").unwrap().collect::<Vec<_>>(), &["one,two"]);
}

#[test]
fn pos_mult_overrides_itself() {
    // opts with multiple
    let res = App::new("posix")
                .arg(Arg::from_usage("[val]... 'some pos'").overrides_with("val"))
                .get_matches_from_safe(vec!["", "some", "other", "value"]);
    assert!(res.is_ok());
    let m = res.unwrap();
    assert!(m.is_present("val"));
    assert_eq!(m.occurrences_of("val"), 3);
    assert_eq!(m.values_of("val").unwrap().collect::<Vec<_>>(), &["some", "other", "value"]);
}

#[test]
fn posix_compatible_flags_long() {
    let m = App::new("posix")
                .arg(Arg::from_usage("--flag  'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color 'some other flag'"))
                .get_matches_from(vec!["", "--flag", "--color"]);
    assert!(m.is_present("color"));
    assert!(!m.is_present("flag"));

    let m = App::new("posix")
                .arg(Arg::from_usage("--flag  'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color 'some other flag'"))
                .get_matches_from(vec!["", "--color", "--flag"]);
    assert!(!m.is_present("color"));
    assert!(m.is_present("flag"));
}

#[test]
fn posix_compatible_flags_short() {
    let m = App::new("posix")
                .arg(Arg::from_usage("-f, --flag  'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("-c, --color 'some other flag'"))
                .get_matches_from(vec!["", "-f", "-c"]);
    assert!(m.is_present("color"));
    assert!(!m.is_present("flag"));

    let m = App::new("posix")
                .arg(Arg::from_usage("-f, --flag  'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("-c, --color 'some other flag'"))
                .get_matches_from(vec!["", "-c", "-f"]);
    assert!(!m.is_present("color"));
    assert!(m.is_present("flag"));
}

#[test]
fn posix_compatible_opts_long() {
    let m = App::new("posix")
                .arg(Arg::from_usage("--flag [flag] 'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color [color] 'some other flag'"))
                .get_matches_from(vec!["", "--flag", "some" ,"--color", "other"]);
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
    assert!(!m.is_present("flag"));

    let m = App::new("posix")
                .arg(Arg::from_usage("--flag [flag] 'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color [color] 'some other flag'"))
                .get_matches_from(vec!["", "--color", "some" ,"--flag", "other"]);
    assert!(!m.is_present("color"));
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "other");
}

#[test]
fn posix_compatible_opts_long_equals() {
    let m = App::new("posix")
                .arg(Arg::from_usage("--flag [flag] 'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color [color] 'some other flag'"))
                .get_matches_from(vec!["", "--flag=some" ,"--color=other"]);
    assert!(m.is_present("color"));
    assert_eq!(m.value_of("color").unwrap(), "other");
    assert!(!m.is_present("flag"));

    let m = App::new("posix")
                .arg(Arg::from_usage("--flag [flag] 'some flag'").overrides_with("color"))
                .arg(Arg::from_usage("--color [color] 'some other flag'"))
                .get_matches_from(vec!["", "--color=some" ,"--flag=other"]);
    assert!(!m.is_present("color"));
    assert!(m.is_present("flag"));
    assert_eq!(m.value_of("flag").unwrap(), "other");
}

#[test]
fn posix_compatible_opts_short() {
    let m = App::new("posix")
                .arg(Arg::from_usage("-f [flag]  'some flag'").overrides_with("c"))
                .arg(Arg::from_usage("-c [color] 'some other flag'"))
                .get_matches_from(vec!["", "-f", "some", "-c", "other"]);
    assert!(m.is_present("c"));
    assert_eq!(m.value_of("c").unwrap(), "other");
    assert!(!m.is_present("f"));

    let m = App::new("posix")
                .arg(Arg::from_usage("-f [flag]  'some flag'").overrides_with("c"))
                .arg(Arg::from_usage("-c [color] 'some other flag'"))
                .get_matches_from(vec!["", "-c", "some", "-f", "other"]);
    assert!(!m.is_present("c"));
    assert!(m.is_present("f"));
    assert_eq!(m.value_of("f").unwrap(), "other");
}

#[test]
fn conflict_overriden() {
    let m = App::new("conflict_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .conflicts_with("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from(vec!["", "-f", "-c", "-d"]);
    assert!(m.is_present("color"));
    assert!(!m.is_present("flag"));
    assert!(m.is_present("debug"));
}

#[test]
fn conflict_overriden_2() {
    let result = App::new("conflict_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .conflicts_with("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from_safe(vec!["", "-f", "-d", "-c"]);
    assert!(result.is_ok());
    let m = result.unwrap();
    assert!(m.is_present("color"));
    assert!(m.is_present("debug"));
    assert!(!m.is_present("flag"));
}

#[test]
fn conflict_overriden_3() {
    let result = App::new("conflict_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .conflicts_with("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from_safe(vec!["", "-d", "-c", "-f"]);
    assert!(result.is_err());
    let err = result.err().unwrap();
    assert_eq!(err.kind, ErrorKind::ArgumentConflict);
}

#[test]
fn conflict_overriden_4() {
    let m = App::new("conflict_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .conflicts_with("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from(vec!["", "-d", "-f", "-c"]);
    assert!(m.is_present("color"));
    assert!(!m.is_present("flag"));
    assert!(m.is_present("debug"));
}

#[test]
fn pos_required_overridden_by_flag() {
    let result = App::new("require_overriden")
        .arg(Arg::with_name("pos")
            .index(1)
            .required(true))
        .arg(Arg::from_usage("-c, --color 'some flag'")
            .overrides_with("pos"))
        .get_matches_from_safe(vec!["", "test", "-c"]);
    assert!(result.is_ok(), "{:?}", result.unwrap_err());
}

#[test]
fn require_overriden_2() {
    let m = App::new("require_overriden")
        .arg(Arg::with_name("req_pos")
            .required(true))
        .arg(Arg::from_usage("-c, --color 'other flag'")
            .overrides_with("req_pos"))
        .get_matches_from(vec!["", "-c", "req_pos"]);
    assert!(!m.is_present("color"));
    assert!(m.is_present("req_pos"));
}

#[test]
fn require_overriden_3() {
    let m = App::new("require_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .requires("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from(vec!["", "-f", "-c"]);
    assert!(m.is_present("color"));
    assert!(!m.is_present("flag"));
    assert!(!m.is_present("debug"));
}

#[test]
fn require_overriden_4() {
    let result = App::new("require_overriden")
        .arg(Arg::from_usage("-f, --flag 'some flag'")
            .requires("debug"))
        .arg(Arg::from_usage("-d, --debug 'other flag'"))
        .arg(Arg::from_usage("-c, --color 'third flag'")
            .overrides_with("flag"))
        .get_matches_from_safe(vec!["", "-c", "-f"]);
    assert!(result.is_err());
    let err = result.err().unwrap();
    assert_eq!(err.kind, ErrorKind::MissingRequiredArgument);
}