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use std::str::FromStr;
use parser::ArgumentParser;
use super::Store;
use test_parser::{check_ok};
use self::Greeting::{Hello, Hi, NoGreeting};
#[derive(PartialEq, Eq, Debug)]
enum Greeting {
Hello,
Hi,
NoGreeting,
}
impl FromStr for Greeting {
type Err = ();
fn from_str(src: &str) -> Result<Greeting, ()> {
return match src {
"hello" => Ok(Hello),
"hi" => Ok(Hi),
_ => Err(()),
};
}
}
fn parse_enum(args: &[&str]) -> Greeting {
let mut val = NoGreeting;
{
let mut ap = ArgumentParser::new();
ap.refer(&mut val)
.add_option(&["-g"], Store,
"Greeting");
check_ok(&ap, args);
}
return val;
}
#[test]
fn test_parse_enum() {
assert_eq!(parse_enum(&["./argparse_test"]), NoGreeting);
assert_eq!(parse_enum(&["./argparse_test", "-ghello"]), Hello);
assert_eq!(parse_enum(&["./argparse_test", "-ghi"]), Hi);
}
#[test]
#[should_panic]
fn test_parse_error() {
parse_enum(&["./argparse_test", "-ghell"]);
}
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