diff --git a/src/header/common/accept_charset.rs b/src/header/common/accept_charset.rs
index 53ae264c05..1fc044ae3a 100644
--- a/src/header/common/accept_charset.rs
+++ b/src/header/common/accept_charset.rs
@@ -21,17 +21,3 @@ header! {
         test_header!(test1, vec![b"iso-8859-5, unicode-1-1;q=0.8"]);
     }
 }
-
-
-#[test]
-fn test_parse_header() {
-    use header::{self, q};
-    let a: AcceptCharset = header::Header::parse_header(
-        [b"iso-8859-5, iso-8859-6;q=0.8".to_vec()].as_ref()).unwrap();
-    let b = AcceptCharset(vec![
-        QualityItem { item: Charset::Iso_8859_5, quality: q(1.0) },
-        QualityItem { item: Charset::Iso_8859_6, quality: q(0.8) },
-    ]);
-    assert_eq!(format!("{}", a), format!("{}", b));
-    assert_eq!(a, b);
-}
diff --git a/src/header/common/access_control_max_age.rs b/src/header/common/access_control_max_age.rs
index b5a9aec235..036f14e177 100644
--- a/src/header/common/access_control_max_age.rs
+++ b/src/header/common/access_control_max_age.rs
@@ -5,4 +5,6 @@ header! {
     #[doc="The `Access-Control-Max-Age` header indicates how long the results of a"]
     #[doc="preflight request can be cached in a preflight result cache."]
     (AccessControlMaxAge, "Access-Control-Max-Age") => [u32]
-}
\ No newline at end of file
+
+    test_access_control_max_age {}
+}
diff --git a/src/header/common/access_control_request_method.rs b/src/header/common/access_control_request_method.rs
index de97ec18f6..30f0c152b4 100644
--- a/src/header/common/access_control_request_method.rs
+++ b/src/header/common/access_control_request_method.rs
@@ -7,4 +7,6 @@ header! {
     #[doc="The `Access-Control-Request-Method` header indicates which method will be"]
     #[doc="used in the actual request as part of the preflight request."]
     (AccessControlRequestMethod, "Access-Control-Request-Method") => [Method]
+
+    test_access_control_request_method {}
 }
diff --git a/src/header/common/content_length.rs b/src/header/common/content_length.rs
index ac6308809e..4c9d39463a 100644
--- a/src/header/common/content_length.rs
+++ b/src/header/common/content_length.rs
@@ -16,6 +16,11 @@ header! {
     #[doc="Content-Length = 1*DIGIT"]
     #[doc="```"]
     (ContentLength, "Content-Length") => [u64]
+
+    test_content_length {
+        // Testcase from RFC
+        test_header!(test1, vec![b"3495"], Some(HeaderField(3495)));
+    }
 }
 
 bench_header!(bench, ContentLength, { vec![b"42349984".to_vec()] });
diff --git a/src/header/common/content_type.rs b/src/header/common/content_type.rs
index 427de5eef8..89f4bff38d 100644
--- a/src/header/common/content_type.rs
+++ b/src/header/common/content_type.rs
@@ -17,6 +17,15 @@ header! {
     #[doc="Content-Type = media-type"]
     #[doc="```"]
     (ContentType, "Content-Type") => [Mime]
+
+    test_content_type {
+        test_header!(
+            test1,
+            // FIXME: Should be b"text/html; charset=ISO-8859-4" but mime crate lowercases
+            // the whole value so parsing and formatting the value gives a different result
+            vec![b"text/html; charset=iso-8859-4"],
+            Some(HeaderField(Mime(TopLevel::Text, SubLevel::Html, vec![(Attr::Charset, Value::Ext("iso-8859-4".to_string()))]))));
+    }
 }
 
 bench_header!(bench, ContentType, { vec![b"application/json; charset=utf-8".to_vec()] });
diff --git a/src/header/common/date.rs b/src/header/common/date.rs
index 70fcb5fed5..8bba67693d 100644
--- a/src/header/common/date.rs
+++ b/src/header/common/date.rs
@@ -11,6 +11,10 @@ header! {
     #[doc="Date = HTTP-date"]
     #[doc="```"]
     (Date, "Date") => [HttpDate]
+
+    test_date {
+        test_header!(test1, vec![b"Tue, 15 Nov 1994 08:12:31 GMT"]);
+    }
 }
 
 bench_header!(imf_fixdate, Date, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] });
diff --git a/src/header/common/etag.rs b/src/header/common/etag.rs
index 7d30041fb3..fbd65e2924 100644
--- a/src/header/common/etag.rs
+++ b/src/header/common/etag.rs
@@ -18,6 +18,12 @@ header! {
     #[doc="ETag       = entity-tag"]
     #[doc="```"]
     (ETag, "ETag") => [EntityTag]
+
+    test_etag {
+        test_header!(test1, vec![b"\"xyzzy\""], Some(HeaderField(EntityTag::new(false, "xyzzy".to_string()))));
+        test_header!(test2, vec![b"W/\"xyzzy\""], Some(HeaderField(EntityTag::new(true, "xyzzy".to_string()))));
+        test_header!(test3, vec![b"\"\""], Some(HeaderField(EntityTag::new(false, "".to_string()))));
+    }
 }
 
 #[cfg(test)]
diff --git a/src/header/common/expires.rs b/src/header/common/expires.rs
index 613ef6a0e0..aa080d5eb9 100644
--- a/src/header/common/expires.rs
+++ b/src/header/common/expires.rs
@@ -15,6 +15,11 @@ header! {
     #[doc="Expires = HTTP-date"]
     #[doc="```"]
     (Expires, "Expires") => [HttpDate]
+
+    test_expires {
+        // Testcase from RFC
+        test_header!(test1, vec![b"Thu, 01 Dec 1994 16:00:00 GMT"]);
+    }
 }
 
 bench_header!(imf_fixdate, Expires, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] });
diff --git a/src/header/common/if_modified_since.rs b/src/header/common/if_modified_since.rs
index b845320393..67241b845f 100644
--- a/src/header/common/if_modified_since.rs
+++ b/src/header/common/if_modified_since.rs
@@ -15,6 +15,11 @@ header! {
     #[doc="If-Unmodified-Since = HTTP-date"]
     #[doc="```"]
     (IfModifiedSince, "If-Modified-Since") => [HttpDate]
+
+    test_if_modified_since {
+        // Testcase from RFC
+        test_header!(test1, vec![b"Sat, 29 Oct 1994 19:43:31 GMT"]);
+    }
 }
 
 bench_header!(imf_fixdate, IfModifiedSince, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] });
diff --git a/src/header/common/if_unmodified_since.rs b/src/header/common/if_unmodified_since.rs
index 200d030d5a..9fd3afbd6e 100644
--- a/src/header/common/if_unmodified_since.rs
+++ b/src/header/common/if_unmodified_since.rs
@@ -15,6 +15,11 @@ header! {
     #[doc="If-Unmodified-Since = HTTP-date"]
     #[doc="```"]
     (IfUnmodifiedSince, "If-Unmodified-Since") => [HttpDate]
+
+    test_if_unmodified_since {
+        // Testcase from RFC
+        test_header!(test1, vec![b"Sat, 29 Oct 1994 19:43:31 GMT"]);
+    }
 }
 
 bench_header!(imf_fixdate, IfUnmodifiedSince, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] });
diff --git a/src/header/common/last_modified.rs b/src/header/common/last_modified.rs
index cf3f0cf564..e203b20b15 100644
--- a/src/header/common/last_modified.rs
+++ b/src/header/common/last_modified.rs
@@ -13,6 +13,10 @@ header! {
     #[doc="Expires = HTTP-date"]
     #[doc="```"]
     (LastModified, "Last-Modified") => [HttpDate]
+
+    test_last_modified {
+        // Testcase from RFC
+        test_header!(test1, vec![b"Sat, 29 Oct 1994 19:43:31 GMT"]);}
 }
 
 bench_header!(imf_fixdate, LastModified, { vec![b"Sun, 07 Nov 1994 08:48:37 GMT".to_vec()] });
diff --git a/src/header/common/location.rs b/src/header/common/location.rs
index f5d23023f0..4ff45fdf3f 100644
--- a/src/header/common/location.rs
+++ b/src/header/common/location.rs
@@ -14,6 +14,12 @@ header! {
     // TODO: Use URL
     (Location, "Location") => [String]
 
+    test_location {
+        // Testcase from RFC
+        test_header!(test1, vec![b"/People.html#tim"]);
+        test_header!(test2, vec![b"http://www.example.net/index.html"]);
+    }
+
 }
 
 bench_header!(bench, Location, { vec![b"http://foo.com/hello:3000".to_vec()] });
diff --git a/src/header/common/mod.rs b/src/header/common/mod.rs
index b69e54e7c6..f1218f43a8 100644
--- a/src/header/common/mod.rs
+++ b/src/header/common/mod.rs
@@ -202,7 +202,7 @@ macro_rules! header {
         }
     };
     // Single value header
-    ($(#[$a:meta])*($id:ident, $n:expr) => [$value:ty]) => {
+    ($(#[$a:meta])*($id:ident, $n:expr) => [$value:ty] $tm:ident{$($tf:item)*}) => {
         $(#[$a])*
         #[derive(Clone, Debug, PartialEq)]
         pub struct $id(pub $value);
@@ -225,6 +225,15 @@ macro_rules! header {
                 ::std::fmt::Display::fmt(&**self, f)
             }
         }
+        #[allow(unused_imports)]
+        mod $tm{
+            use std::str;
+            use $crate::header::*;
+            use $crate::mime::*;
+            use $crate::method::Method;
+            use super::$id as HeaderField;
+            $($tf)*
+        }
     };
     // List header, one or more items with "*" option
     ($(#[$a:meta])*($id:ident, $n:expr) => {Any / ($item:ty)+} $tm:ident{$($tf:item)*}) => {
diff --git a/src/header/common/referer.rs b/src/header/common/referer.rs
index ab720537ea..06dbeeff2f 100644
--- a/src/header/common/referer.rs
+++ b/src/header/common/referer.rs
@@ -14,6 +14,11 @@ header! {
     #[doc="```"]
     // TODO: Use URL
     (Referer, "Referer") => [String]
+
+    test_referer {
+        // Testcase from the RFC
+        test_header!(test1, vec![b"http://www.example.org/hypertext/Overview.html"]);
+    }
 }
 
 bench_header!(bench, Referer, { vec![b"http://foo.com/hello:3000".to_vec()] });
diff --git a/src/header/common/server.rs b/src/header/common/server.rs
index 476d4bc083..9f795c680c 100644
--- a/src/header/common/server.rs
+++ b/src/header/common/server.rs
@@ -15,6 +15,11 @@ header! {
     #[doc="```"]
     // TODO: Maybe parse as defined in the spec?
     (Server, "Server") => [String]
+
+    test_server {
+        // Testcase from RFC
+        test_header!(test1, vec![b"CERN/3.0 libwww/2.17"]);
+    }
 }
 
 bench_header!(bench, Server, { vec![b"Some String".to_vec()] });
diff --git a/src/header/common/user_agent.rs b/src/header/common/user_agent.rs
index 2a481e9bab..2592bcdabb 100644
--- a/src/header/common/user_agent.rs
+++ b/src/header/common/user_agent.rs
@@ -18,6 +18,11 @@ header! {
     #[doc="```"]
     // TODO: Maybe write parsing according to the spec? (Split the String)
     (UserAgent, "User-Agent") => [String]
+
+    test_user_agent {
+        // Testcase from RFC
+        test_header!(test1, vec![b"CERN-LineMode/2.15 libwww/2.17b3"]);
+    }
 }
 
 #[test] fn test_format() {