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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   * Unit tests for privacy.
  19   *
  20   * @package   core_analytics
  21   * @copyright 2018 David Monllaó {@link http://www.davidmonllao.com}
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  namespace core_analytics\privacy;
  25  
  26  use core_analytics\privacy\provider;
  27  use core_privacy\local\request\transform;
  28  use core_privacy\local\request\writer;
  29  use core_privacy\local\request\approved_contextlist;
  30  use core_privacy\local\request\approved_userlist;
  31  
  32  defined('MOODLE_INTERNAL') || die();
  33  
  34  require_once (__DIR__ . '/../fixtures/test_indicator_max.php');
  35  require_once (__DIR__ . '/../fixtures/test_indicator_min.php');
  36  require_once (__DIR__ . '/../fixtures/test_target_site_users.php');
  37  require_once (__DIR__ . '/../fixtures/test_target_course_users.php');
  38  
  39  /**
  40   * Unit tests for privacy.
  41   *
  42   * @package   core_analytics
  43   * @copyright 2018 David Monllaó {@link http://www.davidmonllao.com}
  44   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  45   */
  46  class provider_test extends \core_privacy\tests\provider_testcase {
  47  
  48      public function setUp(): void {
  49  
  50          $this->resetAfterTest(true);
  51          $this->setAdminUser();
  52  
  53          $timesplittingid = '\core\analytics\time_splitting\single_range';
  54          $target = \core_analytics\manager::get_target('test_target_site_users');
  55          $indicators = array('test_indicator_max');
  56          foreach ($indicators as $key => $indicator) {
  57              $indicators[$key] = \core_analytics\manager::get_indicator($indicator);
  58          }
  59          $this->model1 = \core_analytics\model::create($target, $indicators, $timesplittingid);
  60          $this->modelobj1 = $this->model1->get_model_obj();
  61  
  62          $target = \core_analytics\manager::get_target('test_target_course_users');
  63          $indicators = array('test_indicator_min');
  64          foreach ($indicators as $key => $indicator) {
  65              $indicators[$key] = \core_analytics\manager::get_indicator($indicator);
  66          }
  67          $this->model2 = \core_analytics\model::create($target, $indicators, $timesplittingid);
  68          $this->modelobj2 = $this->model1->get_model_obj();
  69  
  70          $this->u1 = $this->getDataGenerator()->create_user(['firstname' => 'a111111111111', 'lastname' => 'a']);
  71          $this->u2 = $this->getDataGenerator()->create_user(['firstname' => 'a222222222222', 'lastname' => 'a']);
  72          $this->u3 = $this->getDataGenerator()->create_user(['firstname' => 'b333333333333', 'lastname' => 'b']);
  73          $this->u4 = $this->getDataGenerator()->create_user(['firstname' => 'b444444444444', 'lastname' => 'b']);
  74          $this->u5 = $this->getdatagenerator()->create_user(['firstname' => 'a555555555555', 'lastname' => 'a']);
  75          $this->u6 = $this->getdatagenerator()->create_user(['firstname' => 'a666666666666', 'lastname' => 'a']);
  76          $this->u7 = $this->getdatagenerator()->create_user(['firstname' => 'b777777777777', 'lastname' => 'b']);
  77          $this->u8 = $this->getDataGenerator()->create_user(['firstname' => 'b888888888888', 'lastname' => 'b']);
  78  
  79          $this->c1 = $this->getDataGenerator()->create_course(['visible' => false]);
  80          $this->c2 = $this->getDataGenerator()->create_course();
  81  
  82          $this->getDataGenerator()->enrol_user($this->u1->id, $this->c1->id, 'student');
  83          $this->getDataGenerator()->enrol_user($this->u2->id, $this->c1->id, 'student');
  84          $this->getDataGenerator()->enrol_user($this->u3->id, $this->c1->id, 'student');
  85          $this->getDataGenerator()->enrol_user($this->u4->id, $this->c1->id, 'student');
  86          $this->getDataGenerator()->enrol_user($this->u5->id, $this->c1->id, 'student');
  87          $this->getDataGenerator()->enrol_user($this->u6->id, $this->c1->id, 'student');
  88          $this->getDataGenerator()->enrol_user($this->u7->id, $this->c1->id, 'student');
  89          $this->getDataGenerator()->enrol_user($this->u8->id, $this->c1->id, 'student');
  90          $this->getDataGenerator()->enrol_user($this->u1->id, $this->c2->id, 'student');
  91          $this->getDataGenerator()->enrol_user($this->u2->id, $this->c2->id, 'student');
  92          $this->getDataGenerator()->enrol_user($this->u3->id, $this->c2->id, 'student');
  93          $this->getDataGenerator()->enrol_user($this->u4->id, $this->c2->id, 'student');
  94          $this->getDataGenerator()->enrol_user($this->u5->id, $this->c2->id, 'student');
  95          $this->getDataGenerator()->enrol_user($this->u6->id, $this->c2->id, 'student');
  96          $this->getDataGenerator()->enrol_user($this->u7->id, $this->c2->id, 'student');
  97          $this->getDataGenerator()->enrol_user($this->u8->id, $this->c2->id, 'student');
  98  
  99          $this->setAdminUser();
 100  
 101          $this->model1->enable();
 102          $this->model1->train();
 103          $this->model1->predict();
 104          $this->model2->enable();
 105          $this->model2->train();
 106          $this->model2->predict();
 107  
 108          list($total, $predictions) = $this->model2->get_predictions(\context_course::instance($this->c1->id));
 109  
 110          $this->setUser($this->u3);
 111          $prediction = reset($predictions);
 112          $prediction->action_executed(\core_analytics\prediction::ACTION_INCORRECTLY_FLAGGED, $this->model2->get_target());
 113  
 114          $this->setAdminUser();
 115      }
 116  
 117      /**
 118       * Test fetching users within a context.
 119       */
 120      public function test_get_users_in_context() {
 121          global $CFG;
 122  
 123          $component = 'core_analytics';
 124          $course1context = \context_course::instance($this->c1->id);
 125          $course2context = \context_course::instance($this->c2->id);
 126          $systemcontext = \context_system::instance();
 127          $expected = [$this->u1->id, $this->u2->id, $this->u3->id, $this->u4->id, $this->u5->id, $this->u6->id,
 128              $this->u7->id, $this->u8->id];
 129  
 130          // Check users exist in the relevant contexts.
 131          $userlist = new \core_privacy\local\request\userlist($course1context, $component);
 132          provider::get_users_in_context($userlist);
 133          $actual = $userlist->get_userids();
 134          sort($actual);
 135          $this->assertEquals($expected, $actual);
 136  
 137          $userlist = new \core_privacy\local\request\userlist($course2context, $component);
 138          provider::get_users_in_context($userlist);
 139          $actual = $userlist->get_userids();
 140          sort($actual);
 141          $this->assertEquals($expected, $actual);
 142  
 143          // System context will also find guest and admin user, add to expected before testing.
 144          $expected = array_merge($expected, [$CFG->siteguest, get_admin()->id]);
 145          sort($expected);
 146  
 147          $userlist = new \core_privacy\local\request\userlist($systemcontext, $component);
 148          provider::get_users_in_context($userlist);
 149          $actual = $userlist->get_userids();
 150          sort($actual);
 151          $this->assertEquals($expected, $actual);
 152      }
 153  
 154      /**
 155       * Test delete a context.
 156       *
 157       * @return null
 158       */
 159      public function test_delete_context_data() {
 160          global $DB;
 161  
 162          // We have 4 predictions for model1 and 8 predictions for model2.
 163          $this->assertEquals(12, $DB->count_records('analytics_predictions'));
 164          $this->assertEquals(26, $DB->count_records('analytics_indicator_calc'));
 165  
 166          // We have 1 prediction action.
 167          $this->assertEquals(1, $DB->count_records('analytics_prediction_actions'));
 168  
 169          $coursecontext = \context_course::instance($this->c1->id);
 170  
 171          // Delete the course that was used for prediction.
 172          provider::delete_data_for_all_users_in_context($coursecontext);
 173  
 174          // The course1 predictions are deleted.
 175          $this->assertEquals(8, $DB->count_records('analytics_predictions'));
 176  
 177          // Calculations related to that context are deleted.
 178          $this->assertEmpty($DB->count_records('analytics_indicator_calc', ['contextid' => $coursecontext->id]));
 179  
 180          // The deleted context prediction actions are deleted as well.
 181          $this->assertEquals(0, $DB->count_records('analytics_prediction_actions'));
 182      }
 183  
 184      /**
 185       * Test delete a user.
 186       *
 187       * @return null
 188       */
 189      public function test_delete_user_data() {
 190          global $DB;
 191  
 192          $usercontexts = provider::get_contexts_for_userid($this->u3->id);
 193          $contextlist = new \core_privacy\local\request\approved_contextlist($this->u3, 'core_analytics',
 194                                                                              $usercontexts->get_contextids());
 195          provider::delete_data_for_user($contextlist);
 196  
 197          // The site level prediction for u3 was deleted.
 198          $this->assertEquals(9, $DB->count_records('analytics_predictions'));
 199          $this->assertEquals(0, $DB->count_records('analytics_prediction_actions'));
 200  
 201          $usercontexts = provider::get_contexts_for_userid($this->u1->id);
 202          $contextlist = new \core_privacy\local\request\approved_contextlist($this->u1, 'core_analytics',
 203                                                                              $usercontexts->get_contextids());
 204          provider::delete_data_for_user($contextlist);
 205          // We have nothing for u1.
 206          $this->assertEquals(9, $DB->count_records('analytics_predictions'));
 207  
 208          $usercontexts = provider::get_contexts_for_userid($this->u4->id);
 209          $contextlist = new \core_privacy\local\request\approved_contextlist($this->u4, 'core_analytics',
 210                                                                              $usercontexts->get_contextids());
 211          provider::delete_data_for_user($contextlist);
 212          $this->assertEquals(6, $DB->count_records('analytics_predictions'));
 213      }
 214  
 215      /**
 216       * Test deleting multiple users in a context.
 217       */
 218      public function test_delete_data_for_users() {
 219          global $DB;
 220  
 221          $component = 'core_analytics';
 222          $course1context = \context_course::instance($this->c1->id);
 223          $course2context = \context_course::instance($this->c2->id);
 224          $systemcontext = \context_system::instance();
 225  
 226          // Ensure all records exist in expected contexts.
 227          $expectedcontexts = [$course1context->id, $course2context->id, $systemcontext->id];
 228          sort($expectedcontexts);
 229  
 230          $actualcontexts = [
 231              $this->u1->id => provider::get_contexts_for_userid($this->u1->id)->get_contextids(),
 232              $this->u2->id => provider::get_contexts_for_userid($this->u2->id)->get_contextids(),
 233              $this->u3->id => provider::get_contexts_for_userid($this->u3->id)->get_contextids(),
 234              $this->u4->id => provider::get_contexts_for_userid($this->u4->id)->get_contextids(),
 235              $this->u5->id => provider::get_contexts_for_userid($this->u5->id)->get_contextids(),
 236              $this->u6->id => provider::get_contexts_for_userid($this->u6->id)->get_contextids(),
 237              $this->u7->id => provider::get_contexts_for_userid($this->u7->id)->get_contextids(),
 238              $this->u8->id => provider::get_contexts_for_userid($this->u8->id)->get_contextids(),
 239          ];
 240  
 241          foreach ($actualcontexts as $userid => $unused) {
 242              sort($actualcontexts[$userid]);
 243              $this->assertEquals($expectedcontexts, $actualcontexts[$userid]);
 244          }
 245  
 246          // Test initial record counts are as expected.
 247          $this->assertEquals(12, $DB->count_records('analytics_predictions'));
 248          $this->assertEquals(1, $DB->count_records('analytics_prediction_actions'));
 249          $this->assertEquals(26, $DB->count_records('analytics_indicator_calc'));
 250  
 251          // Delete u1 and u3 from system context.
 252          $approveduserids = [$this->u1->id, $this->u3->id];
 253          $approvedlist = new approved_userlist($systemcontext, $component, $approveduserids);
 254          provider::delete_data_for_users($approvedlist);
 255  
 256          // Ensure u1 and u3 system context data deleted only.
 257          $expectedcontexts = [
 258              $this->u1->id => [$course1context->id, $course2context->id],
 259              $this->u2->id => [$systemcontext->id, $course1context->id, $course2context->id],
 260              $this->u3->id => [$course1context->id, $course2context->id],
 261              $this->u4->id => [$systemcontext->id, $course1context->id, $course2context->id],
 262              $this->u5->id => [$systemcontext->id, $course1context->id, $course2context->id],
 263              $this->u6->id => [$systemcontext->id, $course1context->id, $course2context->id],
 264              $this->u7->id => [$systemcontext->id, $course1context->id, $course2context->id],
 265              $this->u8->id => [$systemcontext->id, $course1context->id, $course2context->id],
 266          ];
 267  
 268          $actualcontexts = [
 269              $this->u1->id => provider::get_contexts_for_userid($this->u1->id)->get_contextids(),
 270              $this->u2->id => provider::get_contexts_for_userid($this->u2->id)->get_contextids(),
 271              $this->u3->id => provider::get_contexts_for_userid($this->u3->id)->get_contextids(),
 272              $this->u4->id => provider::get_contexts_for_userid($this->u4->id)->get_contextids(),
 273              $this->u5->id => provider::get_contexts_for_userid($this->u5->id)->get_contextids(),
 274              $this->u6->id => provider::get_contexts_for_userid($this->u6->id)->get_contextids(),
 275              $this->u7->id => provider::get_contexts_for_userid($this->u7->id)->get_contextids(),
 276              $this->u8->id => provider::get_contexts_for_userid($this->u8->id)->get_contextids(),
 277          ];
 278  
 279          foreach ($actualcontexts as $userid => $unused) {
 280              sort($expectedcontexts[$userid]);
 281              sort($actualcontexts[$userid]);
 282              $this->assertEquals($expectedcontexts[$userid], $actualcontexts[$userid]);
 283          }
 284  
 285          // Test expected number of records have been deleted.
 286          $this->assertEquals(11, $DB->count_records('analytics_predictions'));
 287          $this->assertEquals(1, $DB->count_records('analytics_prediction_actions'));
 288          $this->assertEquals(24, $DB->count_records('analytics_indicator_calc'));
 289  
 290          // Delete for all 8 users in course 2 context.
 291          $approveduserids = [$this->u1->id, $this->u2->id, $this->u3->id, $this->u4->id, $this->u5->id, $this->u6->id,
 292              $this->u7->id, $this->u8->id];
 293          $approvedlist = new approved_userlist($course2context, $component, $approveduserids);
 294          provider::delete_data_for_users($approvedlist);
 295  
 296          // Ensure all course 2 context data deleted for all 4 users.
 297          $expectedcontexts = [
 298              $this->u1->id => [$course1context->id],
 299              $this->u2->id => [$systemcontext->id, $course1context->id],
 300              $this->u3->id => [$course1context->id],
 301              $this->u4->id => [$systemcontext->id, $course1context->id],
 302              $this->u5->id => [$systemcontext->id, $course1context->id],
 303              $this->u6->id => [$systemcontext->id, $course1context->id],
 304              $this->u7->id => [$systemcontext->id, $course1context->id],
 305              $this->u8->id => [$systemcontext->id, $course1context->id],
 306          ];
 307  
 308          $actualcontexts = [
 309              $this->u1->id => provider::get_contexts_for_userid($this->u1->id)->get_contextids(),
 310              $this->u2->id => provider::get_contexts_for_userid($this->u2->id)->get_contextids(),
 311              $this->u3->id => provider::get_contexts_for_userid($this->u3->id)->get_contextids(),
 312              $this->u4->id => provider::get_contexts_for_userid($this->u4->id)->get_contextids(),
 313              $this->u5->id => provider::get_contexts_for_userid($this->u5->id)->get_contextids(),
 314              $this->u6->id => provider::get_contexts_for_userid($this->u6->id)->get_contextids(),
 315              $this->u7->id => provider::get_contexts_for_userid($this->u7->id)->get_contextids(),
 316              $this->u8->id => provider::get_contexts_for_userid($this->u8->id)->get_contextids(),
 317          ];
 318  
 319          foreach ($actualcontexts as $userid => $unused) {
 320              sort($actualcontexts[$userid]);
 321              sort($expectedcontexts[$userid]);
 322              $this->assertEquals($expectedcontexts[$userid], $actualcontexts[$userid]);
 323          }
 324  
 325          // Test expected number of records have been deleted.
 326          $this->assertEquals(7, $DB->count_records('analytics_predictions'));
 327          $this->assertEquals(1, $DB->count_records('analytics_prediction_actions'));
 328          $this->assertEquals(16, $DB->count_records('analytics_indicator_calc'));
 329  
 330          $approveduserids = [$this->u3->id];
 331          $approvedlist = new approved_userlist($course1context, $component, $approveduserids);
 332          provider::delete_data_for_users($approvedlist);
 333  
 334          // Ensure all course 1 context data deleted for u3.
 335          $expectedcontexts = [
 336              $this->u1->id => [$course1context->id],
 337              $this->u2->id => [$systemcontext->id, $course1context->id],
 338              $this->u3->id => [],
 339              $this->u4->id => [$systemcontext->id, $course1context->id],
 340              $this->u5->id => [$systemcontext->id, $course1context->id],
 341              $this->u6->id => [$systemcontext->id, $course1context->id],
 342              $this->u7->id => [$systemcontext->id, $course1context->id],
 343              $this->u8->id => [$systemcontext->id, $course1context->id],
 344          ];
 345  
 346          $actualcontexts = [
 347              $this->u1->id => provider::get_contexts_for_userid($this->u1->id)->get_contextids(),
 348              $this->u2->id => provider::get_contexts_for_userid($this->u2->id)->get_contextids(),
 349              $this->u3->id => provider::get_contexts_for_userid($this->u3->id)->get_contextids(),
 350              $this->u4->id => provider::get_contexts_for_userid($this->u4->id)->get_contextids(),
 351              $this->u5->id => provider::get_contexts_for_userid($this->u5->id)->get_contextids(),
 352              $this->u6->id => provider::get_contexts_for_userid($this->u6->id)->get_contextids(),
 353              $this->u7->id => provider::get_contexts_for_userid($this->u7->id)->get_contextids(),
 354              $this->u8->id => provider::get_contexts_for_userid($this->u8->id)->get_contextids(),
 355          ];
 356          foreach ($actualcontexts as $userid => $unused) {
 357              sort($actualcontexts[$userid]);
 358              sort($expectedcontexts[$userid]);
 359              $this->assertEquals($expectedcontexts[$userid], $actualcontexts[$userid]);
 360          }
 361  
 362          // Test expected number of records have been deleted.
 363          $this->assertEquals(6, $DB->count_records('analytics_predictions'));
 364          $this->assertEquals(0, $DB->count_records('analytics_prediction_actions'));
 365          $this->assertEquals(15, $DB->count_records('analytics_indicator_calc'));
 366      }
 367  
 368      /**
 369       * Test export user data.
 370       *
 371       * @return null
 372       */
 373      public function test_export_data() {
 374          global $DB;
 375  
 376          $system = \context_system::instance();
 377          list($total, $predictions) = $this->model1->get_predictions($system);
 378          foreach ($predictions as $key => $prediction) {
 379              if ($prediction->get_prediction_data()->sampleid !== $this->u3->id) {
 380                  $otheruserprediction = $prediction;
 381                  break;
 382              }
 383          }
 384          $this->setUser($this->u3);
 385          $otheruserprediction->action_executed(\core_analytics\prediction::ACTION_INCORRECTLY_FLAGGED, $this->model1->get_target());
 386          $this->setAdminUser();
 387  
 388          $this->export_context_data_for_user($this->u3->id, $system, 'core_analytics');
 389          $writer = \core_privacy\local\request\writer::with_context($system);
 390          $this->assertTrue($writer->has_any_data());
 391  
 392          $u3prediction = $DB->get_record('analytics_predictions', ['contextid' => $system->id, 'sampleid' => $this->u3->id]);
 393          $data = $writer->get_data([get_string('analytics', 'analytics'),
 394              get_string('privacy:metadata:analytics:predictions', 'analytics'), $u3prediction->id]);
 395          $this->assertEquals(get_string('adminhelplogs'), $data->target);
 396          $this->assertEquals(get_string('coresystem'), $data->context);
 397          $this->assertEquals('firstname first char is not A', $data->prediction);
 398  
 399          $u3calculation = $DB->get_record('analytics_indicator_calc', ['contextid' => $system->id, 'sampleid' => $this->u3->id]);
 400          $data = $writer->get_data([get_string('analytics', 'analytics'),
 401              get_string('privacy:metadata:analytics:indicatorcalc', 'analytics'), $u3calculation->id]);
 402          $this->assertEquals('Allow stealth activities', $data->indicator);
 403          $this->assertEquals(get_string('coresystem'), $data->context);
 404          $this->assertEquals(get_string('yes'), $data->calculation);
 405  
 406          $sql = "SELECT apa.id FROM {analytics_prediction_actions} apa
 407                    JOIN {analytics_predictions} ap ON ap.id = apa.predictionid
 408                   WHERE ap.contextid = :contextid AND apa.userid = :userid AND ap.modelid = :modelid";
 409          $params = ['contextid' => $system->id, 'userid' => $this->u3->id, 'modelid' => $this->model1->get_id()];
 410          $u3action = $DB->get_record_sql($sql, $params);
 411          $data = $writer->get_data([get_string('analytics', 'analytics'),
 412              get_string('privacy:metadata:analytics:predictionactions', 'analytics'), $u3action->id]);
 413          $this->assertEquals(get_string('adminhelplogs'), $data->target);
 414          $this->assertEquals(get_string('coresystem'), $data->context);
 415          $this->assertEquals(\core_analytics\prediction::ACTION_INCORRECTLY_FLAGGED, $data->action);
 416  
 417      }
 418  }