Cache-control parsing doesn't handle quotes

Author: akonradi-signal

src/common/cache_control.rs

@@ -485,6 +485,20 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_parse_quoted_comma() {
+        assert_eq!(
+            test_decode::<CacheControl>(&["foo=\"a, private, immutable, b\", no-cache"]).unwrap(),
+            CacheControl::new()
+                .with_no_cache()
+                // These are wrong: these appear inside a quoted string and so
+                // should be treated as parameter for the "a" directive.
+                .with_private()
+                .with_immutable(),
+            "unknown extensions are ignored but shouldn't fail parsing",
+        )
+    }
+
     #[test]
     fn test_parse_extension() {
         assert_eq!(