diff --git a/grade/tests/behat/grade_custom_scales.feature b/grade/tests/behat/grade_custom_scales.feature
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+@core @core_grades
+Feature: Custom scales can be used to rate forum discussions
+  In order to ensure custom scales are displayed in the gradebook
+  As a teacher
+  I need to create a new custom scale, rate a student post in a forum
+
+  Background:
+    Given the following "courses" exist:
+      | fullname | shortname |
+      | Course 1 | C1        |
+    And the following "users" exist:
+      | username | firstname | lastname | email                |
+      | teacher1 | Teacher   | 1        | teacher1@example.com |
+      | student1 | Student   | 1        | student1@example.com |
+    And the following "course enrolments" exist:
+      | user     | course | role           |
+      | teacher1 | C1     | editingteacher |
+      | student1 | C1     | student        |
+    And the following "activities" exist:
+      | activity | course | name    | idnumber |
+      | forum    | C1     | Forum 1 | forum1   |
+    And the following "mod_forum > discussions" exist:
+      | user     | forum  | name         | message              |
+      | student1 | forum1 | Discussion 1 | Discussion 1 message |
+    And the following "scales" exist:
+      | name        | scale                   |
+      | CustomScale | Bad,OK,Pretty Good,Good |
+    And I am on the "Forum 1" "forum activity editing" page logged in as teacher1
+    And I expand all fieldsets
+    And I set the field "assessed" to "Average of ratings"
+    And I set the field "scale[modgrade_type]" to "Scale"
+    And I set the field "scale[modgrade_scale]" to "CustomScale"
+    And I press "Save and display"
+
+  @javascript
+  Scenario Outline: Verify that scales are displayed in the gradebook after rating a forum discussion
+    Given I follow "Discussion 1"
+    And I set the field "rating" to "<scalescores>"
+    When I am on the "Course 1" "grades > Grader report > View" page
+    Then the following should exist in the "user-grades" table:
+      | -1-       | -2-                  | -3-           |
+      | Student 1 | student1@example.com | <scalescores> |
+    And I am on the "Course 1" "grades > User report > View" page logged in as student1
+    And "Forum 1 rating" row "Grade" column of "user-grade" table should contain "<scalescores>"
+
+    Examples:
+      | scalescores |
+      | Bad         |
+      | OK          |
+      | Pretty Good |
+      | Good        |