# File vendor/rails/actionpack/lib/action_view/test_case.rb, line 21
21:       def determine_default_helper_class(name)
22:         name.sub(/Test$/, '').constantize
23:       rescue NameError
24:         nil
25:       end

    # File vendor/rails/actionpack/lib/action_view/test_case.rb, line 13
13:       def helper_class
14:         if current_helper_class = read_inheritable_attribute(:helper_class)
15:           current_helper_class
16:         else
17:           self.helper_class = determine_default_helper_class(name)
18:         end
19:       end

    # File vendor/rails/actionpack/lib/action_view/test_case.rb, line 9
 9:       def tests(helper_class)
10:         self.helper_class = helper_class
11:       end

    # File vendor/rails/actionpack/lib/action_view/test_case.rb, line 36
36:     def setup_with_helper_class
37:       if helper_class && !self.class.ancestors.include?(helper_class)
38:         self.class.send(:include, helper_class)
39:       end
40:     end