Don't shadow outer local variables.

actionpack/lib/action_dispatch/testing/test_request.rb

@@ -66,7 +66,7 @@ def user_agent=(user_agent)
 
     def accept=(mime_types)
       @env.delete('action_dispatch.request.accepts')
-      @env['HTTP_ACCEPT'] = Array(mime_types).collect { |mime_types| mime_types.to_s }.join(",")
+      @env['HTTP_ACCEPT'] = Array(mime_types).collect { |mime_type| mime_type.to_s }.join(",")
     end
 
     def cookies

actionpack/lib/action_view/testing/resolvers.rb

@@ -22,10 +22,10 @@ def query(path, exts, formats)
       end
 
       templates = []
-      @hash.select { |k,v| k =~ /^#{query}$/ }.each do |path, source|
-        handler, format = extract_handler_and_format(path, formats)
-        templates << Template.new(source, path, handler,
-          :virtual_path => path, :format => format)
+      @hash.select { |k,v| k =~ /^#{query}$/ }.each do |_path, source|
+        handler, format = extract_handler_and_format(_path, formats)
+        templates << Template.new(source, _path, handler,
+          :virtual_path => _path, :format => format)
       end
 
       templates.sort_by {|t| -t.identifier.match(/^#{query}$/).captures.reject(&:blank?).size }