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use std::iter::FromIterator;
use {HeaderName, HeaderValue};
use util::FlatCsv;
#[derive(Clone, Debug, Header)]
pub struct AccessControlExposeHeaders(FlatCsv);
impl AccessControlExposeHeaders {
pub fn iter<'a>(&'a self) -> impl Iterator<Item = HeaderName> + 'a {
self
.0
.iter()
.filter_map(|s| {
s.parse().ok()
})
}
}
impl FromIterator<HeaderName> for AccessControlExposeHeaders {
fn from_iter<I>(iter: I) -> Self
where
I: IntoIterator<Item = HeaderName>,
{
let flat = iter
.into_iter()
.map(HeaderValue::from)
.collect();
AccessControlExposeHeaders(flat)
}
}
#[cfg(test)]
mod tests {
use super::*;
use super::super::{test_decode, test_encode};
#[test]
fn iter() {
let expose_headers = test_decode::<AccessControlExposeHeaders>(
&["foo, bar"]
).unwrap();
let as_vec = expose_headers.iter().collect::<Vec<_>>();
assert_eq!(as_vec.len(), 2);
assert_eq!(as_vec[0], "foo");
assert_eq!(as_vec[1], "bar");
}
#[test]
fn from_iter() {
let expose: AccessControlExposeHeaders = vec![
::http::header::CACHE_CONTROL,
::http::header::IF_RANGE,
].into_iter().collect();
let headers = test_encode(expose);
assert_eq!(headers["access-control-expose-headers"], "cache-control, if-range");
}
}