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use std::fmt::{Formatter, Result};
use hyper::error::{self, Error};
use hyper::header::{HeaderFormat, Header};
const MAN_HEADER_NAME: &'static str = "MAN";
const MAN_HEADER_VALUE: &'static str = "\"ssdp:discover\"";
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub struct Man;
impl Header for Man {
fn header_name() -> &'static str {
MAN_HEADER_NAME
}
fn parse_header(raw: &[Vec<u8>]) -> error::Result<Self> {
if raw.len() != 1 {
return Err(Error::Header);
}
let man_bytes = MAN_HEADER_VALUE.as_bytes();
match &raw[0][..] {
n if n == man_bytes => Ok(Man),
_ => Err(Error::Header),
}
}
}
impl HeaderFormat for Man {
fn fmt_header(&self, fmt: &mut Formatter) -> Result {
try!(fmt.write_str(MAN_HEADER_VALUE));
Ok(())
}
}
#[cfg(test)]
mod tests {
use hyper::header::Header;
use super::Man;
#[test]
fn positive_man() {
let man_header = &[b"\"ssdp:discover\""[..].to_vec()];
Man::parse_header(man_header).unwrap();
}
#[test]
#[should_panic]
fn negative_wrong_case() {
let wrong_case_man_header = &[b"\"SSDP:discover\""[..].to_vec()];
Man::parse_header(wrong_case_man_header).unwrap();
}
#[test]
#[should_panic]
fn negative_missing_quotes() {
let missing_quotes_man_header = &[b"ssdp:discover"[..].to_vec()];
Man::parse_header(missing_quotes_man_header).unwrap();
}
}