hyper::test_header!

macro_rules! test_header {
    ($id:ident, $raw:expr) => {
        #[test]
        fn $id() {
            use std::ascii::AsciiExt;
            let raw = $raw;
            let a: Vec<Vec<u8>> = raw.iter().map(|x| x.to_vec()).collect();
            let value = HeaderField::parse_header(&a[..]);
            let result = format!("{}", value.unwrap());
            let expected = String::from_utf8(raw[0].to_vec()).unwrap();
            let result_cmp: Vec<String> = result
                .to_ascii_lowercase()
                .split(' ')
                .map(|x| x.to_owned())
                .collect();
            let expected_cmp: Vec<String> = expected
                .to_ascii_lowercase()
                .split(' ')
                .map(|x| x.to_owned())
                .collect();
            assert_eq!(result_cmp.concat(), expected_cmp.concat());
        }
    };
    ($id:ident, $raw:expr, $typed:expr) => {
        #[test]
        fn $id() {
            let a: Vec<Vec<u8>> = $raw.iter().map(|x| x.to_vec()).collect();
            let val = HeaderField::parse_header(&a[..]);
            // Test parsing
            assert_eq!(val, $typed);
            // Test formatting
            if $typed != None {
                let res: &str = str::from_utf8($raw[0]).unwrap();
                assert_eq!(format!("{}", $typed.unwrap()), res);
            }
        }
    }
}