change sessions#new test to allow redirect

app/controllers/sessions_controller.rb

@@ -16,7 +16,7 @@
 
 class SessionsController < ApplicationController
 
-  skip_before_filter :verify_authenticity_token
+  skip_before_action :verify_authenticity_token
 
   def new
     # If LDAP is enabled, just route to it instead.

test/controllers/sessions_controller_test.rb

@@ -8,7 +8,12 @@ class SessionsControllerTest < ActionController::TestCase
 
   test "should get new" do
     get :new
-    assert_response :success
+    # We redirect directly to LDAP if configured.
+    if ENV['LDAP_SERVER'].present?
+      assert_response :redirect
+    else
+      assert_response :success
+    end
   end
 
   test "should redirect to home on auth failture" do