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Differences Between: [Versions 401 and 402] [Versions 401 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Privacy tests for core_tag.
  19   *
  20   * @package    core_comment
  21   * @category   test
  22   * @copyright  2018 Zig Tan <zig@moodle.com>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  namespace core_tag\privacy;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  global $CFG;
  29  
  30  require_once($CFG->dirroot . '/tag/lib.php');
  31  
  32  use core_privacy\tests\provider_testcase;
  33  use core_privacy\local\request\writer;
  34  use core_tag\privacy\provider;
  35  use core_privacy\local\request\approved_userlist;
  36  
  37  /**
  38   * Unit tests for tag/classes/privacy/policy
  39   *
  40   * @copyright  2018 Zig Tan <zig@moodle.com>
  41   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  42   */
  43  class provider_test extends provider_testcase {
  44  
  45      /**
  46       * Check the exporting of tags for a user id in a context.
  47       */
  48      public function test_export_tags() {
  49          global $DB;
  50  
  51          $this->resetAfterTest(true);
  52  
  53          // Create a user to perform tagging.
  54          $user = $this->getDataGenerator()->create_user();
  55          $this->setUser($user);
  56  
  57          // Create a course to tag.
  58          $course = $this->getDataGenerator()->create_course();
  59          $context = \context_course::instance($course->id);
  60          $subcontext = [];
  61  
  62          // Create three dummy tags and tag instances.
  63          $dummytags = [ 'Tag 1', 'Tag 2', 'Tag 3' ];
  64          \core_tag_tag::set_item_tags('core_course', 'course', $course->id, \context_course::instance($course->id),
  65                                      $dummytags, $user->id);
  66  
  67          // Get the tag instances that should have been created.
  68          $taginstances = $DB->get_records('tag_instance', array('itemtype' => 'course', 'itemid' => $course->id));
  69          $this->assertCount(count($dummytags), $taginstances);
  70  
  71          // Check tag instances match the component and context.
  72          foreach ($taginstances as $taginstance) {
  73              $this->assertEquals('core_course', $taginstance->component);
  74              $this->assertEquals(\context_course::instance($course->id)->id, $taginstance->contextid);
  75          }
  76  
  77          // Retrieve tags only for this user.
  78          provider::export_item_tags($user->id, $context, $subcontext, 'core_course', 'course', $course->id, true);
  79  
  80          $writer = writer::with_context($context);
  81          $this->assertTrue($writer->has_any_data());
  82  
  83          $exportedtags = $writer->get_related_data($subcontext, 'tags');
  84          $this->assertCount(count($dummytags), $exportedtags);
  85  
  86          // Check the exported tag's rawname is found in the initial dummy tags.
  87          foreach ($exportedtags as $exportedtag) {
  88              $this->assertContains($exportedtag, $dummytags);
  89          }
  90      }
  91  
  92      /**
  93       * Test method delete_item_tags().
  94       */
  95      public function test_delete_item_tags() {
  96          global $DB;
  97  
  98          $this->resetAfterTest(true);
  99  
 100          // Create a course to tag.
 101          $course1 = $this->getDataGenerator()->create_course();
 102          $context1 = \context_course::instance($course1->id);
 103          $course2 = $this->getDataGenerator()->create_course();
 104          $context2 = \context_course::instance($course2->id);
 105  
 106          // Tag courses.
 107          \core_tag_tag::set_item_tags('core_course', 'course', $course1->id, $context1, ['Tag 1', 'Tag 2', 'Tag 3']);
 108          \core_tag_tag::set_item_tags('core_course', 'course', $course2->id, $context2, ['Tag 1', 'Tag 2']);
 109  
 110          $expectedtagcount = $DB->count_records('tag_instance');
 111          // Delete tags for course1.
 112          provider::delete_item_tags($context1, 'core_course', 'course');
 113          $expectedtagcount -= 3;
 114          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 115  
 116          // Delete tags for course2. Use wrong itemid.
 117          provider::delete_item_tags($context2, 'core_course', 'course', $course1->id);
 118          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 119  
 120          // Use correct itemid.
 121          provider::delete_item_tags($context2, 'core_course', 'course', $course2->id);
 122          $expectedtagcount -= 2;
 123          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 124      }
 125  
 126      /**
 127       * Test method delete_item_tags() with userid.
 128       */
 129      public function test_delete_item_tags_with_userid() {
 130          global $DB;
 131  
 132          $this->resetAfterTest(true);
 133          // Create a course to tag.
 134          $course = $this->getDataGenerator()->create_course();
 135          $context = \context_course::instance($course->id);
 136  
 137          // Create a user to perform tagging.
 138          $user = $this->getDataGenerator()->create_user();
 139          $this->setUser($user);
 140  
 141          // Tag courses.
 142          \core_tag_tag::set_item_tags('core_course', 'course', $course->id, $context, ['Tag 1', 'Tag 2'], $user->id);
 143          $expectedtagcount = $DB->count_records('tag_instance');
 144  
 145          // Delete tags for course. Use wrong userid.
 146          provider::delete_item_tags($context, 'core_course', 'course', null, 1);
 147          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 148  
 149          $expectedtagcount -= 2;
 150          // Delete tags for course. Use correct userid.
 151          provider::delete_item_tags($context, 'core_course', 'course', null, $user->id);
 152          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 153      }
 154  
 155      /**
 156       * Test method delete_item_tags_select().
 157       */
 158      public function test_delete_item_tags_select() {
 159          global $DB;
 160  
 161          $this->resetAfterTest(true);
 162  
 163          // Create a course to tag.
 164          $course1 = $this->getDataGenerator()->create_course();
 165          $context1 = \context_course::instance($course1->id);
 166          $course2 = $this->getDataGenerator()->create_course();
 167          $context2 = \context_course::instance($course2->id);
 168  
 169          // Tag courses.
 170          \core_tag_tag::set_item_tags('core_course', 'course', $course1->id, $context1, ['Tag 1', 'Tag 2', 'Tag 3']);
 171          \core_tag_tag::set_item_tags('core_course', 'course', $course2->id, $context2, ['Tag 1', 'Tag 2']);
 172  
 173          $expectedtagcount = $DB->count_records('tag_instance');
 174          // Delete tags for course1.
 175          list($sql, $params) = $DB->get_in_or_equal([$course1->id, $course2->id], SQL_PARAMS_NAMED);
 176          provider::delete_item_tags_select($context1, 'core_course', 'course', $sql, $params);
 177          $expectedtagcount -= 3;
 178          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 179  
 180          // Delete tags for course2.
 181          provider::delete_item_tags_select($context2, 'core_course', 'course', $sql, $params);
 182          $expectedtagcount -= 2;
 183          $this->assertEquals($expectedtagcount, $DB->count_records('tag_instance'));
 184      }
 185  
 186      protected function set_up_tags() {
 187          global $CFG;
 188          require_once($CFG->dirroot.'/user/editlib.php');
 189  
 190          $this->resetAfterTest(true);
 191  
 192          $user1 = $this->getDataGenerator()->create_user();
 193          $user2 = $this->getDataGenerator()->create_user();
 194  
 195          $this->setUser($user1);
 196          useredit_update_interests($user1, ['Birdwatching', 'Computers']);
 197  
 198          $this->setUser($user2);
 199          useredit_update_interests($user2, ['computers']);
 200  
 201          $this->setAdminUser();
 202  
 203          $tag = \core_tag_tag::get_by_name(0, 'computers', '*');
 204          $tag->update(['description' => '<img src="@@PLUGINFILE@@/computer.jpg">']);
 205          get_file_storage()->create_file_from_string([
 206              'contextid' => \context_system::instance()->id,
 207              'component' => 'tag',
 208              'filearea' => 'description',
 209              'itemid' => $tag->id,
 210              'filepath' => '/',
 211              'filename' => 'computer.jpg'
 212          ], "jpg:image");
 213  
 214          return [$user1, $user2];
 215      }
 216  
 217      public function test_export_item_tags() {
 218          list($user1, $user2) = $this->set_up_tags();
 219          $this->assertEquals([\context_system::instance()->id],
 220              provider::get_contexts_for_userid($user1->id)->get_contextids());
 221          $this->assertEmpty(provider::get_contexts_for_userid($user2->id)->get_contextids());
 222      }
 223  
 224      public function test_delete_data_for_user() {
 225          global $DB;
 226          list($user1, $user2) = $this->set_up_tags();
 227          $context = \context_system::instance();
 228          $this->assertEquals(2, $DB->count_records('tag', []));
 229          $this->assertEquals(0, $DB->count_records('tag', ['userid' => 0]));
 230          provider::delete_data_for_user(new \core_privacy\local\request\approved_contextlist($user2, 'core_tag', [$context->id]));
 231          $this->assertEquals(2, $DB->count_records('tag', []));
 232          $this->assertEquals(0, $DB->count_records('tag', ['userid' => 0]));
 233          provider::delete_data_for_user(new \core_privacy\local\request\approved_contextlist($user1, 'core_tag', [$context->id]));
 234          $this->assertEquals(2, $DB->count_records('tag', []));
 235          $this->assertEquals(2, $DB->count_records('tag', ['userid' => 0]));
 236      }
 237  
 238      public function test_delete_data_for_all_users_in_context() {
 239          global $DB;
 240          $course = $this->getDataGenerator()->create_course();
 241          list($user1, $user2) = $this->set_up_tags();
 242          $this->assertEquals(2, $DB->count_records('tag', []));
 243          $this->assertEquals(3, $DB->count_records('tag_instance', []));
 244          provider::delete_data_for_all_users_in_context(\context_course::instance($course->id));
 245          $this->assertEquals(2, $DB->count_records('tag', []));
 246          $this->assertEquals(3, $DB->count_records('tag_instance', []));
 247          provider::delete_data_for_all_users_in_context(\context_system::instance());
 248          $this->assertEquals(0, $DB->count_records('tag', []));
 249          $this->assertEquals(0, $DB->count_records('tag_instance', []));
 250      }
 251  
 252      public function test_export_data_for_user() {
 253          global $DB;
 254          list($user1, $user2) = $this->set_up_tags();
 255          $context = \context_system::instance();
 256          provider::export_user_data(new \core_privacy\local\request\approved_contextlist($user2, 'core_tag', [$context->id]));
 257          $this->assertFalse(writer::with_context($context)->has_any_data());
 258  
 259          $tagids = array_values(array_map(function($tag) {
 260              return $tag->id;
 261          }, \core_tag_tag::get_by_name_bulk(\core_tag_collection::get_default(), ['Birdwatching', 'Computers'])));
 262  
 263          provider::export_user_data(new \core_privacy\local\request\approved_contextlist($user1, 'core_tag', [$context->id]));
 264          $writer = writer::with_context($context);
 265  
 266          $data = $writer->get_data(['Tags', $tagids[0]]);
 267          $files = $writer->get_files(['Tags', $tagids[0]]);
 268          $this->assertEquals('Birdwatching', $data->rawname);
 269          $this->assertEmpty($files);
 270  
 271          $data = $writer->get_data(['Tags', $tagids[1]]);
 272          $files = $writer->get_files(['Tags', $tagids[1]]);
 273          $this->assertEquals('Computers', $data->rawname);
 274          $this->assertEquals(['computer.jpg'], array_keys($files));
 275      }
 276  
 277      /**
 278       * Test that only users within a system context are fetched.
 279       */
 280      public function test_get_users_in_context() {
 281          $component = 'core_tag';
 282  
 283          $user1 = $this->set_up_tags()[0];
 284          $systemcontext = \context_system::instance();
 285  
 286          $userlist1 = new \core_privacy\local\request\userlist($systemcontext, $component);
 287          provider::get_users_in_context($userlist1);
 288          $this->assertCount(1, $userlist1);
 289          $expected = [$user1->id];
 290          $actual = $userlist1->get_userids();
 291          $this->assertEquals($expected, $actual);
 292  
 293          // The list of users within the a context other than system context should be empty.
 294          $usercontext1 = \context_user::instance($user1->id);
 295          $userlist2 = new \core_privacy\local\request\userlist($usercontext1, $component);
 296          provider::get_users_in_context($userlist2);
 297          $this->assertCount(0, $userlist2);
 298      }
 299  
 300      /**
 301       * Test that data for users in approved userlist is deleted.
 302       */
 303      public function test_delete_data_for_users() {
 304          $component = 'core_tag';
 305  
 306          list($user1, $user2) = $this->set_up_tags();
 307          $usercontext1 = \context_user::instance($user1->id);
 308          $user3 = $this->getDataGenerator()->create_user();
 309          $systemcontext = \context_system::instance();
 310  
 311          $this->setUser($user2);
 312          useredit_update_interests($user2, ['basketball']);
 313  
 314          $this->setUser($user3);
 315          useredit_update_interests($user3, ['soccer']);
 316  
 317          $userlist = new \core_privacy\local\request\userlist($systemcontext, $component);
 318          provider::get_users_in_context($userlist);
 319          $this->assertCount(3, $userlist);
 320          $this->assertTrue(in_array($user1->id, $userlist->get_userids()));
 321          $this->assertTrue(in_array($user2->id, $userlist->get_userids()));
 322          $this->assertTrue(in_array($user3->id, $userlist->get_userids()));
 323  
 324          // Data should not be deleted in contexts other than system context.
 325          // Convert $userlist into an approved_contextlist.
 326          $approvedlist = new approved_userlist($usercontext1, $component, $userlist->get_userids());
 327          // Delete using delete_data_for_user.
 328          provider::delete_data_for_users($approvedlist);
 329          // Re-fetch users in systemcontext.
 330          $userlist = new \core_privacy\local\request\userlist($systemcontext, $component);
 331          provider::get_users_in_context($userlist);
 332          // The user data in systemcontext should not be deleted.
 333          $this->assertCount(3, $userlist);
 334  
 335          // Add user1 and user2 into an approved_contextlist.
 336          $approvedlist = new approved_userlist($systemcontext, $component, [$user1->id, $user2->id]);
 337          // Delete using delete_data_for_user.
 338          provider::delete_data_for_users($approvedlist);
 339          // Re-fetch users in systemcontext.
 340          $userlist = new \core_privacy\local\request\userlist($systemcontext, $component);
 341          provider::get_users_in_context($userlist);
 342          // The approved user data in systemcontext should be deleted.
 343          // The user list should return user3.
 344          $this->assertCount(1, $userlist);
 345          $this->assertTrue(in_array($user3->id, $userlist->get_userids()));
 346      }
 347  }