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clap/tests/groups.rs

83 lines
2.7 KiB
Rust

extern crate clap;
use clap::{App, ArgGroup, ErrorKind};
#[test]
fn required_group_missing_arg() {
let result = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color 'some other flag'")
.group(ArgGroup::with_name("req")
.args(&["flag", "color"])
.required(true))
.get_matches_from_safe(vec![""]);
assert!(result.is_err());
let err = result.err().unwrap();
assert_eq!(err.kind, ErrorKind::MissingRequiredArgument);
}
#[test]
fn group_single_value() {
let r = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color [color] 'some option'")
.group(ArgGroup::with_name("grp")
.args(&["flag", "color"]))
.get_matches_from_safe(vec!["myprog", "-c", "blue"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("grp"));
assert_eq!(m.value_of("grp").unwrap(), "blue");
}
#[test]
fn group_single_flag() {
let m = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color [color] 'some option'")
.group(ArgGroup::with_name("grp")
.args(&["flag", "color"]))
.get_matches_from(vec!["myprog", "-f"]);
assert!(m.is_present("grp"));
assert!(m.value_of("grp").is_none());
}
#[test]
fn group_empty() {
let m = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color [color] 'some option'")
.group(ArgGroup::with_name("grp")
.args(&["flag", "color"]))
.get_matches_from(vec![""]);
assert!(!m.is_present("grp"));
assert!(m.value_of("grp").is_none());
}
#[test]
fn group_reqired_flags_empty() {
let result = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color 'some option'")
.group(ArgGroup::with_name("grp")
.required(true)
.args(&["flag", "color"]))
.get_matches_from_safe(vec![""]);
assert!(result.is_err());
let err = result.err().unwrap();
assert_eq!(err.kind, ErrorKind::MissingRequiredArgument);
}
#[test]
fn group_multi_value_single_arg() {
let r = App::new("group")
.args_from_usage("-f, --flag 'some flag'
-c, --color [color]... 'some option'")
.group(ArgGroup::with_name("grp")
.args(&["flag", "color"]))
.get_matches_from_safe(vec!["myprog", "-c", "blue", "red", "green"]);
assert!(r.is_ok());
let m = r.unwrap();
assert!(m.is_present("grp"));
assert_eq!(m.values_of("grp").unwrap().collect::<Vec<_>>(), &["blue", "red", "green"]);
}