fix(headers): Fix formatting of 0 qualites and formatting of empty list header fields.

src/header/common/accept_encoding.rs

@@ -24,24 +24,7 @@ header! {
         test_header!(test3, vec![b"*"]);
         // Note: Removed quality 1 from gzip
         test_header!(test4, vec![b"compress;q=0.5, gzip"]);
-        // FIXME: Formatting of 0 as quality value
-        // test_header!(test5, vec![b"gzip;q=1.0, identity; q=0.5, *;q=0"]);
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use header::{Encoding, Header, qitem, Quality, QualityItem};
-
-    use super::*;
-
-    #[test]
-    fn test_parse_header() {
-        let a: AcceptEncoding = Header::parse_header([b"gzip;q=1.0, identity; q=0.5".to_vec()].as_ref()).unwrap();
-        let b = AcceptEncoding(vec![
-            qitem(Encoding::Gzip),
-            QualityItem::new(Encoding::Identity, Quality(500)),
-        ]);
-        assert_eq!(a, b);
+        // Note: Removed quality 1 from gzip
+        test_header!(test5, vec![b"gzip, identity; q=0.5, *;q=0"]);
     }
 }