Fix stuff in fetch crate

src/components/net/fetch/request.rs

@@ -32,25 +32,24 @@ pub enum Referer {
 
 /// A [request mode](http://fetch.spec.whatwg.org/#concept-request-mode)
 pub enum RequestMode {
-    SameOrigin, // same-origin
-    NoCORS, // No CORS
-    CORSMode, // CORS
-    ForcedPreflightMode // CORS-with-forced-preflight
+    SameOrigin,
+    NoCORS,
+    CORSMode,
+    ForcedPreflightMode
 }
 
 /// Request [credentials mode](http://fetch.spec.whatwg.org/#concept-request-credentials-mode)
 pub enum CredentialsMode {
-    Omit, // omit
-    CredentialsSameOrigin, // same-origin
-    Include // include
+    Omit,
+    CredentialsSameOrigin,
+    Include
 }
 
-    
-// [Response tainting](http://fetch.spec.whatwg.org/#concept-request-response-tainting)
+/// [Response tainting](http://fetch.spec.whatwg.org/#concept-request-response-tainting)
 pub enum ResponseTainting {
-    Basic, // basic
-    CORSTainting, // CORS
-    Opaque // Opaque
+    Basic,
+    CORSTainting,
+    Opaque
 }
 
 /// A [Request](http://fetch.spec.whatwg.org/#requests) as defined by the Fetch spec

src/components/net/fetch/response.rs

@@ -10,7 +10,7 @@ use http::headers::response::HeaderCollection;
 use std::ascii::OwnedStrAsciiExt;
 
 // [Response type](http://fetch.spec.whatwg.org/#concept-response-type)
-#[deriving(Clone)]
+#[deriving(Clone, PartialEq)]
 pub enum ResponseType {
     Basic,
     CORS,
@@ -60,9 +60,11 @@ impl Response {
         }
     }
 
-    /// Convert to a filtered response, of type `filter_type`
+    /// Convert to a filtered response, of type `filter_type`.
     /// Do not use with type Error or Default
     pub fn to_filtered(self, filter_type: ResponseType) -> Response {
+        assert!(filter_type != Error);
+        assert!(filter_type != Default);
         if self.is_network_error() {
             return self;
         }