MDL-64258 Group: Unit Test for find_users function

user/tests/group_non_members_selector_test.php

@@ -0,0 +1,117 @@
+<?php
+// This file is part of Moodle - https://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Unit tests for {@link group_non_members_selector} class.
+ *
+ * @package     core_user
+ * @category    test
+ * @copyright   2019 Huong Nguyen <huongnv13@gmail.com>
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+require_once($CFG->dirroot . '/user/selector/lib.php');
+
+/**
+ * Unit tests for {@link group_non_members_selector} class.
+ *
+ * @package     core_user
+ * @category    test
+ * @copyright   2019 Huong Nguyen <huongnv13@gmail.com>
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class core_group_non_members_selector_testcase extends advanced_testcase {
+
+    /**
+     * Test find_users that only return group non members
+     *
+     * @throws coding_exception
+     */
+    public function test_find_users_only_return_group_non_member() {
+        $this->resetAfterTest();
+
+        // Create course.
+        $course = $this->getDataGenerator()->create_course();
+
+        // Create users.
+        $user1 = $this->getDataGenerator()->create_user(['firstname' => 'User', 'lastname' => '1']);
+        $user2 = $this->getDataGenerator()->create_user(['firstname' => 'User', 'lastname' => '2']);
+        $user3 = $this->getDataGenerator()->create_user(['firstname' => 'User', 'lastname' => '3']);
+        $user4 = $this->getDataGenerator()->create_user(['firstname' => 'User', 'lastname' => '4']);
+        $user5 = $this->getDataGenerator()->create_user(['firstname' => 'User', 'lastname' => '5']);
+
+        // Create group.
+        $group = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
+
+        // Enroll users to course. Except User5.
+        $this->getDataGenerator()->enrol_user($user1->id, $course->id);
+        $this->getDataGenerator()->enrol_user($user2->id, $course->id);
+        $this->getDataGenerator()->enrol_user($user3->id, $course->id);
+        $this->getDataGenerator()->enrol_user($user4->id, $course->id);
+
+        // Assign User1 to Group.
+        $this->getDataGenerator()->create_group_member(['groupid' => $group->id, 'userid' => $user1->id]);
+
+        // User1 and User5 will not exist in the result.
+        // User2, User3 and User4 will exist in the result.
+        $potentialmembersselector = new group_non_members_selector('addselect',
+                ['groupid' => $group->id, 'courseid' => $course->id]);
+        foreach ($potentialmembersselector->find_users('User') as $found) {
+            $this->assertCount(3, $found);
+            $this->assertArrayNotHasKey($user5->id, $found);
+            $this->assertArrayNotHasKey($user1->id, $found);
+            $this->assertArrayHasKey($user2->id, $found);
+            $this->assertArrayHasKey($user3->id, $found);
+            $this->assertArrayHasKey($user4->id, $found);
+        }
+
+        // Assign User2 to Group.
+        $this->getDataGenerator()->create_group_member(['groupid' => $group->id, 'userid' => $user2->id]);
+
+        // User1, User2 and User5 will not exist in the result.
+        // User3 and User4 will exist in the result.
+        $potentialmembersselector = new group_non_members_selector('addselect',
+                ['groupid' => $group->id, 'courseid' => $course->id]);
+        foreach ($potentialmembersselector->find_users('User') as $found) {
+            $this->assertCount(2, $found);
+            $this->assertArrayNotHasKey($user5->id, $found);
+            $this->assertArrayNotHasKey($user1->id, $found);
+            $this->assertArrayNotHasKey($user2->id, $found);
+            $this->assertArrayHasKey($user3->id, $found);
+            $this->assertArrayHasKey($user4->id, $found);
+        }
+
+        // Assign User3 to Group.
+        $this->getDataGenerator()->create_group_member(['groupid' => $group->id, 'userid' => $user3->id]);
+
+        // User1, User2, User3 and User5 will not exist in the result.
+        // Only User4 will exist in the result.
+        $potentialmembersselector = new group_non_members_selector('addselect',
+                ['groupid' => $group->id, 'courseid' => $course->id]);
+        foreach ($potentialmembersselector->find_users('User') as $found) {
+            $this->assertCount(1, $found);
+            $this->assertArrayNotHasKey($user5->id, $found);
+            $this->assertArrayNotHasKey($user1->id, $found);
+            $this->assertArrayNotHasKey($user2->id, $found);
+            $this->assertArrayNotHasKey($user3->id, $found);
+            $this->assertArrayHasKey($user4->id, $found);
+        }
+    }
+
+}