Ensure that test utility methods are marked as private

This allows us to enable the check for test method names.

test/integration/client_applications_test.rb

@@ -76,6 +76,8 @@ class ClientApplicationsTest < ActionDispatch::IntegrationTest
     # tests, as its too tied into the HTTP headers and stuff that it signs.
   end
 
+  private
+
   ##
   # utility method to make the HTML screening easier to read.
   def assert_in_heading(&block)

test/integration/short_links_test.rb

@@ -9,6 +9,8 @@ class ShortLinksTest < ActionDispatch::IntegrationTest
     assert_short_link_redirect(ShortLink.encode(-0.107846, 51.50771, 18))
   end
 
+  private
+
   ##
   # utility method to test short links
   def assert_short_link_redirect(short_link)

test/integration/user_creation_test.rb

@@ -157,7 +157,7 @@ class UserCreationTest < ActionDispatch::IntegrationTest
   end
 
   # Check that the user can successfully recover their password
-  def lost_password_recovery_success
+  def test_lost_password_recovery_success
     # Open the lost password form
     # Submit the lost password form
     # Check the e-mail