MDL-62474 theme_boost: Update to provider and unit test.

Theme boost contains a user preference which was not reported
before. Unit tests have been added to test the update.

theme/boost/classes/privacy/provider.php

@@ -24,7 +24,6 @@
 
 namespace theme_boost\privacy;
 
-use \core_privacy\local\request\writer;
 use \core_privacy\local\metadata\collection;
 
 defined('MOODLE_INTERNAL') || die();
@@ -38,24 +37,20 @@
 class provider implements
     // This plugin has data.
     \core_privacy\local\metadata\provider,
-
-    \core_privacy\local\request\data_provider,
-
     // This plugin has some sitewide user preferences to export.
-    \core_privacy\local\request\user_preference_provider
-{
+    \core_privacy\local\request\user_preference_provider {
 
+    /** The user preference for the navigation drawer. */
     const DRAWER_OPEN_NAV = 'drawer-open-nav';
 
     /**
      * Returns meta data about this system.
      *
-     * @param   collection     $itemcollection The initialised item collection to add items to.
-     * @return  collection     A listing of user data stored through this system.
+     * @param  collection $items The initialised item collection to add items to.
+     * @return collection A listing of user data stored through this system.
      */
     public static function get_metadata(collection $items) {
         $items->add_user_preference(self::DRAWER_OPEN_NAV, 'privacy:metadata:preference:draweropennav');
-
         return $items;
     }
 
@@ -64,15 +59,19 @@ public static function get_metadata(collection $items) {
      *
      * @param int $userid The userid of the user whose data is to be exported.
      */
-    public static function export_user_preferences(int $userid) {
+    public static function export_user_preferences($userid) {
         $draweropennavpref = get_user_preferences(self::DRAWER_OPEN_NAV, null, $userid);
 
         if (isset($draweropennavpref)) {
-            writer::export_user_preference(
+            $preferencestring = get_string('privacy:drawernavclosed', 'theme_boost');
+            if ($draweropennavpref == 'true') {
+                $preferencestring = get_string('privacy:drawernavopen', 'theme_boost');
+            }
+            \core_privacy\local\request\writer::export_user_preference(
                 'theme_boost',
                 self::DRAWER_OPEN_NAV,
                 $draweropennavpref,
-                get_string('privacy:request:preference:draweropennav', 'theme_boost')
+                $preferencestring
             );
         }
     }

theme/boost/lang/en/theme_boost.php

@@ -42,5 +42,6 @@
 $string['rawscsspre'] = 'Raw initial SCSS';
 $string['rawscsspre_desc'] = 'In this field you can provide initialising SCSS code, it will be injected before everything else. Most of the time you will use this setting to define variables.';
 $string['region-side-pre'] = 'Right';
-$string['privacy:metadata:preference:draweropennav'] = 'Hide or show the left drawer menu nav.';
-$string['privacy:request:preference:draweropennav'] = 'Your preference for hide or show the left drawer menu nav';
+$string['privacy:metadata:preference:draweropennav'] = 'The user\'s preference for hiding or showing the drawer menu navigation.';
+$string['privacy:drawernavclosed'] = 'The current preference for the navigation drawer is closed.';
+$string['privacy:drawernavopen'] = 'The current preference for the navigation drawer is open.';

theme/boost/tests/privacy_test.php

@@ -0,0 +1,78 @@
+<?php
+// This file is part of Moodle - http://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/>.
+
+/**
+ * Privacy tests for theme_boost.
+ *
+ * @package    theme_boost
+ * @category   test
+ * @copyright  2018 Adrian Greeve <adriangreeve.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+use \theme_boost\privacy\provider;
+
+/**
+ * Unit tests for theme_boost/classes/privacy/policy
+ *
+ * @copyright  2018 Adrian Greeve <adriangreeve.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class theme_boost_privacy_testcase extends \core_privacy\tests\provider_testcase {
+
+    /**
+     * Test for provider::test_export_user_preferences().
+     */
+    public function test_export_user_preferences() {
+        $this->resetAfterTest();
+
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+
+        // Add a user home page preference for the User.
+        set_user_preference(provider::DRAWER_OPEN_NAV, 'false', $user);
+
+        // Test the user preferences export contains 1 user preference record for the User.
+        provider::export_user_preferences($user->id);
+        $contextuser = context_user::instance($user->id);
+        $writer = \core_privacy\local\request\writer::with_context($contextuser);
+        $this->assertTrue($writer->has_any_data());
+
+        $exportedpreferences = $writer->get_user_preferences('theme_boost');
+        $this->assertCount(1, (array) $exportedpreferences);
+        $this->assertEquals('false', $exportedpreferences->{provider::DRAWER_OPEN_NAV}->value);
+        $this->assertEquals(get_string('privacy:drawernavclosed', 'theme_boost'),
+                $exportedpreferences->{provider::DRAWER_OPEN_NAV}->description);
+
+        // Add a user home page preference for the User.
+        set_user_preference(provider::DRAWER_OPEN_NAV, 'true', $user);
+
+        // Test the user preferences export contains 1 user preference record for the User.
+        provider::export_user_preferences($user->id);
+        $contextuser = context_user::instance($user->id);
+        $writer = \core_privacy\local\request\writer::with_context($contextuser);
+        $this->assertTrue($writer->has_any_data());
+
+        $exportedpreferences = $writer->get_user_preferences('theme_boost');
+        $this->assertCount(1, (array) $exportedpreferences);
+        $this->assertEquals('true', $exportedpreferences->{provider::DRAWER_OPEN_NAV}->value);
+        $this->assertEquals(get_string('privacy:drawernavopen', 'theme_boost'),
+                $exportedpreferences->{provider::DRAWER_OPEN_NAV}->description);
+    }
+}