MDL-81514 assign: Show non-participation groups in activity menu

This sets the flag in the activity menu for selecting the grade
summaries for each groups, to include non-participation groups as well.

Author: marxjohnson

public/mod/assign/classes/output/renderer.php

@@ -298,7 +298,7 @@ public function render_assign_grading_summary(\assign_grading_summary $summary)
 
         if (isset($summary->cm)) {
             $currenturl = new \moodle_url('/mod/assign/view.php', array('id' => $summary->cm->id));
-            $o .= groups_print_activity_menu($summary->cm, $currenturl->out(), true);
+            $o .= groups_print_activity_menu($summary->cm, $currenturl->out(), true, participationonly: false);
         }
 
         $o .= $this->output->box_start('boxaligncenter gradingsummarytable');

public/mod/assign/tests/behat/group_submission.feature

@@ -417,3 +417,33 @@ Feature: Group assignment submissions
     Then I should see "Student 1"
     And I should see "Student 3"
     And I should not see "Student 2"
+
+  @javascript
+  Scenario: All groups including non-participation groups can be selected when viewing the grade summary
+    Given the following "groups" exist:
+      | name    | course | idnumber | participation | visibility |
+      | Group 2 | C1     | G2       | 0             | 0          |
+      | Group 3 | C1     | G3       | 0             | 3          |
+    And the following "group members" exist:
+      | group | user     |
+      | G1    | student1 |
+      | G2    | student1 |
+      | G1    | student2 |
+      | G2    | student3 |
+    And the following "activity" exists:
+      | activity         | assign               |
+      | course           | C1                   |
+      | name             | Test assignment name |
+      | submissiondrafts | 0                    |
+      | teamsubmission   | 1                    |
+      | groupmode        | 1                    |
+    And the following "mod_assign > submissions" exist:
+      | assign                | user      | onlinetext                          |
+      | Test assignment name  | student1  | I'm the student's first submission  |
+      | Test assignment name  | student3  | I'm the student's first submission  |
+    When I am on the "Test assignment name" Activity page logged in as teacher1
+    Then "Non-participation" "optgroup" should exist in the "select[name=group]" "css_element"
+    And "Group 1" "option" should exist in the "select[name=group]" "css_element"
+    And "Group 2" "option" should exist in the "optgroup[label=Non-participation]" "css_element"
+    And "Group 3" "option" should exist in the "optgroup[label=Non-participation]" "css_element"
+    And "Group 1" "option" should not exist in the "optgroup[label=Non-participation]" "css_element"