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use header::EntityTag;
header! {
/// `If-None-Match` header, defined in
/// [RFC7232](https://tools.ietf.org/html/rfc7232#section-3.2)
///
/// The `If-None-Match` header field makes the request method conditional
/// on a recipient cache or origin server either not having any current
/// representation of the target resource, when the field-value is "*",
/// or having a selected representation with an entity-tag that does not
/// match any of those listed in the field-value.
///
/// A recipient MUST use the weak comparison function when comparing
/// entity-tags for If-None-Match (Section 2.3.2), since weak entity-tags
/// can be used for cache validation even if there have been changes to
/// the representation data.
///
/// # ABNF
/// ```plain
/// If-None-Match = "*" / 1#entity-tag
/// ```
///
/// # Example values
/// * `"xyzzy"`
/// * `W/"xyzzy"`
/// * `"xyzzy", "r2d2xxxx", "c3piozzzz"`
/// * `W/"xyzzy", W/"r2d2xxxx", W/"c3piozzzz"`
/// * `*`
///
/// # Examples
/// ```
/// use hyper::header::{Headers, IfNoneMatch};
///
/// let mut headers = Headers::new();
/// headers.set(IfNoneMatch::Any);
/// ```
/// ```
/// use hyper::header::{Headers, IfNoneMatch, EntityTag};
///
/// let mut headers = Headers::new();
/// headers.set(
/// IfNoneMatch::Items(vec![
/// EntityTag::new(false, "xyzzy".to_owned()),
/// EntityTag::new(false, "foobar".to_owned()),
/// EntityTag::new(false, "bazquux".to_owned()),
/// ])
/// );
/// ```
(IfNoneMatch, "If-None-Match") => {Any / (EntityTag)+}
test_if_none_match {
test_header!(test1, vec![b"\"xyzzy\""]);
test_header!(test2, vec![b"W/\"xyzzy\""]);
test_header!(test3, vec![b"\"xyzzy\", \"r2d2xxxx\", \"c3piozzzz\""]);
test_header!(test4, vec![b"W/\"xyzzy\", W/\"r2d2xxxx\", W/\"c3piozzzz\""]);
test_header!(test5, vec![b"*"]);
}
}
#[cfg(test)]
mod tests {
use super::IfNoneMatch;
use header::Header;
use header::EntityTag;
#[test]
fn test_if_none_match() {
let mut if_none_match: ::Result<IfNoneMatch>;
if_none_match = Header::parse_header([b"*".to_vec()].as_ref());
assert_eq!(if_none_match.ok(), Some(IfNoneMatch::Any));
if_none_match = Header::parse_header([b"\"foobar\", W/\"weak-etag\"".to_vec()].as_ref());
let mut entities: Vec<EntityTag> = Vec::new();
let foobar_etag = EntityTag::new(false, "foobar".to_owned());
let weak_etag = EntityTag::new(true, "weak-etag".to_owned());
entities.push(foobar_etag);
entities.push(weak_etag);
assert_eq!(if_none_match.ok(), Some(IfNoneMatch::Items(entities)));
}
}
bench_header!(bench, IfNoneMatch, { vec![b"W/\"nonemptytag\"".to_vec()] });