mention controller test base class in testing guide. [ci skip]

1 files changed, 6 insertions, 4 deletions

diff --git a/guides/source/testing.md b/guides/source/testing.md
index 5b8829b89a..50115607c9 100644
--- a/guides/source/testing.md
+++ b/guides/source/testing.md
@@ -438,10 +438,12 @@ Now that we have used Rails scaffold generator for our `Post` resource, it has a
 Let me take you through one such test, `test_should_get_index` from the file `posts_controller_test.rb`.
 
 ```ruby
-test "should get index" do
-  get :index
-  assert_response :success
-  assert_not_nil assigns(:posts)
+class PostsControllerTest < ActionController::TestCase
+  test "should get index" do
+    get :index
+    assert_response :success
+    assert_not_nil assigns(:posts)
+  end
 end
 ```