  def test_index_should_show_visible_custom_fields_only
    Issue.destroy_all
    field_attributes = {:field_format => 'string', :is_for_all => true, :is_filter => true, :trackers => Tracker.all}
    @fields = []
    @fields << (@field1 = IssueCustomField.create!(field_attributes.merge(:name => 'Field 1', :visible => true)))
    @fields << (@field2 = IssueCustomField.create!(field_attributes.merge(:name => 'Field 2', :visible => false, :role_ids => [1, 2])))
    @fields << (@field3 = IssueCustomField.create!(field_attributes.merge(:name => 'Field 3', :visible => false, :role_ids => [1, 3])))
    @issue = Issue.generate!(
      :author_id => 1,
      :project_id => 1,
      :tracker_id => 1,
      :custom_field_values => {@field1.id => 'Value0', @field2.id => 'Value1', @field3.id => 'Value2'}
    )
    @issue.init_journal(User.find(1))
    @issue.update_attribute :custom_field_values, {@field1.id => 'NewValue0', @field2.id => 'NewValue1', @field3.id => 'NewValue2'}


    user_with_role_on_other_project = User.generate!
    User.add_to_project(user_with_role_on_other_project, Project.find(2), Role.find(3))
    users_to_test = {
      User.find(1) => [@field1, @field2, @field3],
      User.find(3) => [@field1, @field2],
      user_with_role_on_other_project => [@field1], # should see field1 only on Project 1
      User.generate! => [@field1],
      User.anonymous => [@field1]
    }

    users_to_test.each do |user, visible_fields|
      get :index, :format => 'atom', :key => user.rss_key
      @fields.each_with_index do |field, i|
        if visible_fields.include?(field)
          assert_select "content[type=html]", { :text => /NewValue#{i}/, :count => 1 }, "User #{user.id} was not able to view #{field.name} in API"
        else
          assert_select "content[type=html]", { :text => /NewValue#{i}/, :count => 0 }, "User #{user.id} was able to view #{field.name} in API"
        end
      end
    end

  end
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.