hyper_sync/header/common/
if_none_match.rs

1use header::EntityTag;
2
3header! {
4    /// `If-None-Match` header, defined in
5    /// [RFC7232](https://tools.ietf.org/html/rfc7232#section-3.2)
6    ///
7    /// The `If-None-Match` header field makes the request method conditional
8    /// on a recipient cache or origin server either not having any current
9    /// representation of the target resource, when the field-value is "*",
10    /// or having a selected representation with an entity-tag that does not
11    /// match any of those listed in the field-value.
12    ///
13    /// A recipient MUST use the weak comparison function when comparing
14    /// entity-tags for If-None-Match (Section 2.3.2), since weak entity-tags
15    /// can be used for cache validation even if there have been changes to
16    /// the representation data.
17    ///
18    /// # ABNF
19    ///
20    /// ```text
21    /// If-None-Match = "*" / 1#entity-tag
22    /// ```
23    ///
24    /// # Example values
25    ///
26    /// * `"xyzzy"`
27    /// * `W/"xyzzy"`
28    /// * `"xyzzy", "r2d2xxxx", "c3piozzzz"`
29    /// * `W/"xyzzy", W/"r2d2xxxx", W/"c3piozzzz"`
30    /// * `*`
31    ///
32    /// # Examples
33    ///
34    /// ```
35    /// use hyper_sync::header::{Headers, IfNoneMatch};
36    ///
37    /// let mut headers = Headers::new();
38    /// headers.set(IfNoneMatch::Any);
39    /// ```
40    ///
41    /// ```
42    /// use hyper_sync::header::{Headers, IfNoneMatch, EntityTag};
43    ///
44    /// let mut headers = Headers::new();
45    /// headers.set(
46    ///     IfNoneMatch::Items(vec![
47    ///         EntityTag::new(false, "xyzzy".to_owned()),
48    ///         EntityTag::new(false, "foobar".to_owned()),
49    ///         EntityTag::new(false, "bazquux".to_owned()),
50    ///     ])
51    /// );
52    /// ```
53    (IfNoneMatch, "If-None-Match") => {Any / (EntityTag)+}
54
55    test_if_none_match {
56        test_header!(test1, vec![b"\"xyzzy\""]);
57        test_header!(test2, vec![b"W/\"xyzzy\""]);
58        test_header!(test3, vec![b"\"xyzzy\", \"r2d2xxxx\", \"c3piozzzz\""]);
59        test_header!(test4, vec![b"W/\"xyzzy\", W/\"r2d2xxxx\", W/\"c3piozzzz\""]);
60        test_header!(test5, vec![b"*"]);
61    }
62}
63
64#[cfg(test)]
65mod tests {
66    use super::IfNoneMatch;
67    use header::Header;
68    use header::EntityTag;
69
70    #[test]
71    fn test_if_none_match() {
72        let mut if_none_match: ::Result<IfNoneMatch>;
73
74        if_none_match = Header::parse_header(&b"*".as_ref().into());
75        assert_eq!(if_none_match.ok(), Some(IfNoneMatch::Any));
76
77        if_none_match = Header::parse_header(&b"\"foobar\", W/\"weak-etag\"".as_ref().into());
78        let mut entities: Vec<EntityTag> = Vec::new();
79        let foobar_etag = EntityTag::new(false, "foobar".to_owned());
80        let weak_etag = EntityTag::new(true, "weak-etag".to_owned());
81        entities.push(foobar_etag);
82        entities.push(weak_etag);
83        assert_eq!(if_none_match.ok(), Some(IfNoneMatch::Items(entities)));
84    }
85}
86
87bench_header!(bench, IfNoneMatch, { vec![b"W/\"nonemptytag\"".to_vec()] });
hyper_sync/header/common/if_none_match.rs

hyper_sync/header/common/
if_none_match.rs
