Added some comments and test for user profile redirect.

controllers/users_controller.rb

@@ -124,6 +124,7 @@ class Rstatus
 
     user = User.first :username => params[:slug]
     if user.nil?
+      #check for a case insensitive match and then redirect to the correct address
       slug = Regexp.escape(params[:slug])
       user = User.first("$where" => "this.username.match(/#{slug}/i)")
       if user.nil?

test/rstatus_test.rb

@@ -46,6 +46,13 @@ def test_user_profile
     assert_equal 200, page.status_code
   end
 
+  def test_user_profile_redirect
+    u = Factory(:user)
+    url = "http://www.example.com/users/#{u.username}"
+    visit "/users/#{u.username.upcase}"
+    assert_equal url, page.current_url
+  end
+
   def test_user_follows_themselves_upon_create
     u = Factory(:user)
     a = Factory(:authorization, :user => u)