1 files changed, 8 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/assertions/model_assertions.rb b/actionpack/lib/action_controller/assertions/model_assertions.rb
index 5fc5c81cb7..0b4313055a 100644
--- a/actionpack/lib/action_controller/assertions/model_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/model_assertions.rb
@@ -2,6 +2,13 @@ module ActionController
   module Assertions
     module ModelAssertions
       # Ensures that the passed record is valid by ActiveRecord standards and returns any error messages if it is not.
+      #
+      # ==== Examples
+      #
+      #   # assert that a newly created record is valid
+      #   model = Model.new
+      #   assert_valid(model)
+      #
       def assert_valid(record)
         clean_backtrace do
           assert record.valid?, record.errors.full_messages.join("\n")
@@ -9,4 +16,4 @@ module ActionController
       end
     end
   end
-end
-\ No newline at end of file
+end