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use util::FlatCsv;
use HeaderValue;
///
/// The "Vary" header field in a response describes what parts of a
/// request message, aside from the method, Host header field, and
/// request target, might influence the origin server's process for
/// selecting and representing this response. The value consists of
/// either a single asterisk ("*") or a list of header field names
/// (case-insensitive).
///
/// # ABNF
///
/// ```text
/// Vary = "*" / 1#field-name
/// ```
///
/// # Example values
///
/// * `accept-encoding, accept-language`
///
/// # Example
///
/// ```
/// # extern crate headers;
/// use headers::Vary;
///
/// let vary = Vary::any();
/// ```
#[derive(Debug, Clone, PartialEq)]
pub struct Vary(FlatCsv);
derive_header! {
Vary(_),
name: VARY
}
impl Vary {
/// Create a new `Very: *` header.
pub fn any() -> Vary {
Vary(HeaderValue::from_static("*").into())
}
/// Check if this includes `*`.
pub fn is_any(&self) -> bool {
self.0.iter().any(|val| val == "*")
}
/// Iterate the header names of this `Vary`.
pub fn iter_strs(&self) -> impl Iterator<Item = &str> {
self.0.iter()
}
}
/*
test_vary {
test_header!(test1, vec![b"accept-encoding, accept-language"]);
#[test]
fn test2() {
let mut vary: ::Result<Vary>;
vary = Header::parse_header(&"*".into());
assert_eq!(vary.ok(), Some(Vary::Any));
vary = Header::parse_header(&"etag,cookie,allow".into());
assert_eq!(vary.ok(), Some(Vary::Items(vec!["eTag".parse().unwrap(),
"cookIE".parse().unwrap(),
"AlLOw".parse().unwrap(),])));
}
}
*/
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn any_is_any() {
assert!(Vary::any().is_any());
}
}