Stop messing with the case of the attribute name in AttributeHandlers::get_attribute.

This fixes a bug where GetAttributeNS would incorrectly match lower-case
attributes when called with an upper-case argument.

components/script/dom/element.rs

@@ -252,7 +252,10 @@ impl<'a> ElementHelpers for JSRef<'a, Element> {
 }
 
 pub trait AttributeHandlers {
-    fn get_attribute(&self, namespace: Namespace, name: &str) -> Option<Temporary<Attr>>;
+    /// Returns the attribute with given namespace and case-sensitive local
+    /// name, if any.
+    fn get_attribute(&self, namespace: Namespace, local_name: &str)
+                     -> Option<Temporary<Attr>>;
     fn set_attribute_from_parser(&self, local_name: Atom,
                                  value: DOMString, namespace: Namespace,
                                  prefix: Option<DOMString>);
@@ -282,13 +285,9 @@ pub trait AttributeHandlers {
 }
 
 impl<'a> AttributeHandlers for JSRef<'a, Element> {
-    fn get_attribute(&self, namespace: Namespace, name: &str) -> Option<Temporary<Attr>> {
+    fn get_attribute(&self, namespace: Namespace, local_name: &str) -> Option<Temporary<Attr>> {
-        let element: &Element = self.deref();
+        let local_name = Atom::from_slice(local_name);
-        let local_name = match self.html_element_in_html_document() {
+        self.attrs.borrow().iter().map(|attr| attr.root()).find(|attr| {
-            true => Atom::from_slice(name.to_ascii_lower().as_slice()),
-            false => Atom::from_slice(name)
-        };
-        element.attrs.borrow().iter().map(|attr| attr.root()).find(|attr| {
             *attr.local_name() == local_name && attr.namespace == namespace
         }).map(|x| Temporary::from_rooted(&*x))
     }
@@ -423,6 +422,7 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
     }
 
     fn get_url_attribute(&self, name: &str) -> DOMString {
+        assert!(name == name.to_ascii_lower().as_slice());
         // XXX Resolve URL.
         self.get_string_attribute(name)
     }
@@ -431,6 +431,7 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
     }
 
     fn get_string_attribute(&self, name: &str) -> DOMString {
+        assert!(name == name.to_ascii_lower().as_slice());
         match self.get_attribute(Null, name) {
             Some(x) => {
                 let x = x.root();

tests/wpt/metadata/dom/nodes/attributes.html.ini

@@ -1,11 +1,5 @@
 [attributes.html]
   type: testharness
-  [setAttribute should lowercase its name argument (upper case attribute)]
-    expected: FAIL
-
-  [setAttribute should lowercase its name argument (mixed case attribute)]
-    expected: FAIL
-
   [setAttribute should set the attribute with the given qualified name]
     expected: FAIL
 
@@ -15,12 +9,6 @@
   [First set attribute is returned by getAttribute]
     expected: FAIL
 
-  [Only lowercase attributes are returned on HTML elements (upper case attribute)]
-    expected: FAIL
-
-  [Only lowercase attributes are returned on HTML elements (mixed case attribute)]
-    expected: FAIL
-
   [First set attribute is returned with mapped attribute set later]
     expected: FAIL
 

tests/wpt/metadata/dom/nodes/case.html.ini

@@ -6,15 +6,9 @@
   [createElementNS http://www.w3.org/1999/xhtml,abc,Abc]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,abc,Abc]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,abc,ABC]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,abc,ABC]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,abc,\xc3\xa4]
     expected: FAIL
 
@@ -27,15 +21,9 @@
   [createElementNS http://www.w3.org/1999/xhtml,Abc,Abc]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,Abc,Abc]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,Abc,ABC]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,Abc,ABC]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,Abc,\xc3\xa4]
     expected: FAIL
 
@@ -48,15 +36,9 @@
   [createElementNS http://www.w3.org/1999/xhtml,ABC,Abc]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,ABC,Abc]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,ABC,ABC]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,ABC,ABC]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,ABC,\xc3\xa4]
     expected: FAIL
 
@@ -69,15 +51,9 @@
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\xa4,Abc]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,\xc3\xa4,Abc]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\xa4,ABC]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,\xc3\xa4,ABC]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\xa4,\xc3\xa4]
     expected: FAIL
 
@@ -90,84 +66,12 @@
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\x84,Abc]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,\xc3\x84,Abc]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\x84,ABC]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/1999/xhtml,\xc3\x84,ABC]
-    expected: FAIL
-
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\x84,\xc3\xa4]
     expected: FAIL
 
   [createElementNS http://www.w3.org/1999/xhtml,\xc3\x84,\xc3\x84]
     expected: FAIL
 
-  [getAttributeNS http://www.w3.org/2000/svg,abc,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,abc,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,Abc,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,Abc,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,ABC,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,ABC,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,\xc3\xa4,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,\xc3\xa4,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,\xc3\x84,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://www.w3.org/2000/svg,\xc3\x84,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,abc,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,abc,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,Abc,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,Abc,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,ABC,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,ABC,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,\xc3\xa4,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,\xc3\xa4,ABC]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,\xc3\x84,Abc]
-    expected: FAIL
-
-  [getAttributeNS http://FOO,\xc3\x84,ABC]
-    expected: FAIL
-
-  [getAttributeNS Abc]
-    expected: FAIL
-
-  [getAttributeNS ABC]
-    expected: FAIL
-