servo · bors-servo · Mar 22, 2016 · Feb 3, 2016 · shinglyu · Mar 7, 2016
diff --git a/components/script/dom/xmlhttprequest.rs b/components/script/dom/xmlhttprequest.rs
@@ -118,7 +118,7 @@ pub struct XMLHttpRequest {
     timeout: Cell<u32>,
     with_credentials: Cell<bool>,
     upload: JS<XMLHttpRequestUpload>,
-    response_url: String,
+    response_url: DOMRefCell<String>,
     status: Cell<u16>,
     status_text: DOMRefCell<ByteString>,
     response: DOMRefCell<ByteString>,
@@ -160,7 +160,7 @@ impl XMLHttpRequest {
             timeout: Cell::new(0u32),
             with_credentials: Cell::new(false),
             upload: JS::from_rooted(&XMLHttpRequestUpload::new(global)),
-            response_url: String::from(""),
+            response_url: DOMRefCell::new(String::from("")),
             status: Cell::new(0),
             status_text: DOMRefCell::new(ByteString::new(vec!())),
             response: DOMRefCell::new(ByteString::new(vec!())),
@@ -691,7 +691,7 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
 
     // https://xhr.spec.whatwg.org/#the-responseurl-attribute
     fn ResponseURL(&self) -> USVString {
-        USVString(self.response_url.clone())
+        USVString(self.response_url.borrow().clone())
     }
 
     // https://xhr.spec.whatwg.org/#the-status-attribute
@@ -876,6 +876,8 @@ impl XMLHttpRequest {
             }
         }
 
+        *self.response_url.borrow_mut() = metadata.final_url.serialize_no_fragment();
+
         // XXXManishearth Clear cache entries in case of a network error
         self.process_partial_response(XHRProgress::HeadersReceived(gen_id,
                                                                    metadata.headers,
@@ -980,6 +982,7 @@ impl XMLHttpRequest {
 
                 // Subsubsteps 5-7
                 self.send_flag.set(false);
+
                 self.change_ready_state(XMLHttpRequestState::Done);
                 return_if_fetch_was_terminated!();
                 // Subsubsteps 10-12

diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json

     "deleted": [],
     "items": {
       "testharness": {
+        "XMLHttpRequest/responseurl.html": [
+          {
+            "path": "XMLHttpRequest/responseurl.html",
+            "url": "/XMLHttpRequest/responseurl.html"
+          }
+        ],
         "html/semantics/forms/textfieldselection/selection-after-content-change.html": [
           {
             "path": "html/semantics/forms/textfieldselection/selection-after-content-change.html",
diff --git a/tests/wpt/metadata/XMLHttpRequest/responsexml-document-properties.htm.ini b/tests/wpt/metadata/XMLHttpRequest/responsexml-document-properties.htm.ini
@@ -3,12 +3,6 @@
   [domain]
     expected: FAIL
 
-  [URL]
-    expected: FAIL
-
-  [documentURI]
-    expected: FAIL
-
   [referrer]
     expected: FAIL
 

diff --git a/tests/wpt/web-platform-tests/XMLHttpRequest/responseurl.html b/tests/wpt/web-platform-tests/XMLHttpRequest/responseurl.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<html>
+  <head>
+    <title>XMLHttpRequest: responseURL test</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <link rel="help" href="https://xhr.spec.whatwg.org/#the-responseurl-attribute"/>
+  </head>
+  <body>
+    <div id="log"></div>
+    <script>
+      test(function() {
+        var client = new XMLHttpRequest()
+        assert_equals(client.responseURL, "")
+
+        client.open("GET", "foo.html", false)
+        client.send()
+
+        expected = location.href.replace(/[^/]*$/, 'foo.html')
+        assert_equals(client.status, 404)
+        assert_equals(client.responseURL, expected)
+      }, "404 response has proper responseURL")
+      test(function() {
+        var client = new XMLHttpRequest()
+        assert_equals(client.responseURL, "")
+
+        target = "image.gif"
+        client.open("GET", "resources/redirect.py?location=" + target, false)
+        client.send()
+
+        expected = location.href.replace(/[^/]*$/, "resources/" + target)
+        assert_equals(client.status, 200)
+        assert_equals(client.responseURL, expected)
+      }, "Redirected response has proper responseURL")
+    </script>
+  </body>
+</html>