[Summary view]

Differences Between: [Versions 311 and 402] [Versions 400 and 402] [Versions 401 and 402]

   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 the core_notes implementation of the privacy API.
  19   *
  20   * @package    core_notes
  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_notes\privacy;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  global $CFG;
  29  
  30  require_once($CFG->dirroot . "/notes/lib.php");
  31  
  32  use core_notes\privacy\provider;
  33  use core_privacy\local\request\writer;
  34  use core_privacy\local\request\approved_contextlist;
  35  use core_privacy\local\request\approved_userlist;
  36  
  37  /**
  38   * Unit tests for the core_notes implementation of the privacy API.
  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 \core_privacy\tests\provider_testcase {
  44  
  45      /**
  46       * Test for provider::get_contexts_for_userid().
  47       */
  48      public function test_get_contexts_for_userid() {
  49          global $DB;
  50  
  51          // Test setup.
  52          $this->resetAfterTest(true);
  53          $this->setAdminUser();
  54          set_config('enablenotes', true);
  55  
  56          $teacher1 = $this->getDataGenerator()->create_user();
  57          $this->setUser($teacher1);
  58          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
  59  
  60          $student = $this->getDataGenerator()->create_user();
  61          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
  62  
  63          // Create Courses, then enrol a teacher and a student.
  64          $nocourses = 5;
  65          $courses = [];
  66          $coursecontextids = [];
  67          for ($c = 1; $c <= $nocourses; $c++) {
  68              $course = $this->getDataGenerator()->create_course();
  69              $coursecontext = \context_course::instance($course->id);
  70  
  71              role_assign($teacherrole->id, $teacher1->id, $coursecontext->id);
  72              role_assign($studentrole->id, $student->id, $coursecontext->id);
  73  
  74              // Only create private user notes (i.e. NOTES_STATE_DRAFT) for student in Course 1, 2, 3 written by the teacher.
  75              if ($c <= 3) {
  76                  $this->help_create_user_note(
  77                      $student->id,
  78                      NOTES_STATE_DRAFT,
  79                      $course->id,
  80                      "Test private user note about the student in Course $c by the teacher"
  81                  );
  82              }
  83  
  84              $courses[$c] = $course;
  85              $coursecontextids[] = $coursecontext->id;
  86          }
  87  
  88          // Test Teacher 1's contexts equals 3 because only 3 user notes were added for Course 1, 2, and 3.
  89          // Course 4 and 5 does not have any notes associated with it, so the contexts should not be returned.
  90          $contexts = provider::get_contexts_for_userid($teacher1->id);
  91          $this->assertCount(3, $contexts->get_contextids());
  92  
  93          // Test the Student's contexts is 0 because the notes written by the teacher are private.
  94          $contexts = provider::get_contexts_for_userid($student->id);
  95          $this->assertCount(0, $contexts->get_contextids());
  96  
  97          // Add a public user note (i.e. NOTES_STATE_PUBLIC) written by the Teacher about the Student in Course 4.
  98          $course = $courses[4];
  99          $this->help_create_user_note(
 100              $student->id,
 101              NOTES_STATE_PUBLIC,
 102              $course->id,
 103              "Test public user note about the student in Course 4 by the teacher"
 104          );
 105  
 106          // Test Teacher 1's contexts equals 4 after adding a public note about a student in Course 4.
 107          $contexts = provider::get_contexts_for_userid($teacher1->id);
 108          $this->assertCount(4, $contexts->get_contextids());
 109  
 110          // Test the Student's contexts is 1 for Course 4 because there is a public note written by the teacher.
 111          $contexts = provider::get_contexts_for_userid($student->id);
 112          $this->assertCount(1, $contexts->get_contextids());
 113  
 114          // Add a site-wide user note (i.e. NOTES_STATE_SITE) written by the Teacher 1 about the Student in Course 3.
 115          $course = $courses[3];
 116          $this->help_create_user_note(
 117              $student->id,
 118              NOTES_STATE_SITE,
 119              $course->id,
 120              "Test site-wide user note about the student in Course 3 by the teacher"
 121          );
 122  
 123          // Test the Student's contexts is 2 for Courses 3, 4 because there is a public and site-wide note written by the Teacher.
 124          $contexts = provider::get_contexts_for_userid($student->id);
 125          $this->assertCount(2, $contexts->get_contextids());
 126  
 127          // Add a site-wide user note for the Teacher 1 by another Teacher 2 in Course 5.
 128          $teacher2 = $this->getDataGenerator()->create_user();
 129          $this->setUser($teacher2);
 130  
 131          $course = $courses[5];
 132          $this->help_create_user_note(
 133              $teacher1->id,
 134              NOTES_STATE_SITE,
 135              $course->id,
 136              "Test site-wide user note about the teacher in Course 5 by another teacher"
 137          );
 138  
 139          // Test Teacher 1's contexts equals 5 after adding the note from another teacher.
 140          $contextlist = provider::get_contexts_for_userid($teacher1->id);
 141          $this->assertCount(5, $contextlist->get_contextids());
 142  
 143          // Test Teacher 1's contexts match the contexts of the Courses associated with notes created.
 144          $this->assertEmpty(array_diff($coursecontextids, $contextlist->get_contextids()));
 145      }
 146  
 147      /**
 148       * Test for provider::export_user_data().
 149       */
 150      public function test_export_user_data() {
 151          global $DB;
 152  
 153          // Test setup.
 154          $this->resetAfterTest(true);
 155          $this->setAdminUser();
 156          set_config('enablenotes', true);
 157  
 158          $teacher1 = $this->getDataGenerator()->create_user();
 159          $this->setUser($teacher1);
 160          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 161  
 162          $nocourses = 5;
 163          $nostudents = 2;
 164          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 165  
 166          $courses = [];
 167          $coursecontextids = [];
 168          for ($c = 1; $c <= $nocourses; $c++) {
 169              // Create a Course, then enrol a teacher and enrol 2 students.
 170              $course = $this->getDataGenerator()->create_course();
 171              $coursecontext = \context_course::instance($course->id);
 172  
 173              role_assign($teacherrole->id, $teacher1->id, $coursecontext->id);
 174  
 175              // Only create public user notes (i.e. NOTES_STATE_PUBLIC) for students in Course 1, 2, 3 written by the teacher.
 176              if ($c <= 3) {
 177                  for ($s = 0; $s < $nostudents; $s++) {
 178                      $student = $this->getDataGenerator()->create_user();
 179                      role_assign($studentrole->id, $student->id, $coursecontext->id);
 180  
 181                      // Create test public user note data written for students by the teacher.
 182                      $this->help_create_user_note(
 183                          $student->id,
 184                          NOTES_STATE_PUBLIC,
 185                          $course->id,
 186                          "Test public user note for student $s in Course $c by the teacher"
 187                      );
 188                  }
 189                  // Store the Course context for those which have test notes added for verification.
 190                  $coursecontextids[] = $coursecontext->id;
 191              }
 192  
 193              $courses[$c] = $course;
 194          }
 195  
 196          // Add a site-wide user note for Teacher 1 by another Teacher 2 in Course 4.
 197          $teacher2 = $this->getDataGenerator()->create_user();
 198          $this->setUser($teacher2);
 199  
 200          $course = $courses[4];
 201          $this->help_create_user_note(
 202              $teacher1->id,
 203              NOTES_STATE_SITE,
 204              $course->id,
 205              "Test site-wide user note about the teacher in Course 4 by another teacher"
 206          );
 207          // Store the Course context for those which have test notes added for verification.
 208          $coursecontextids[] = \context_course::instance($course->id)->id;
 209  
 210          // Add a private user note for Teacher 1 by another Teacher 2 in Course 5.
 211          $course = $courses[5];
 212          $this->help_create_user_note(
 213              $teacher1->id,
 214              NOTES_STATE_DRAFT,
 215              $course->id,
 216              "Test private user note about the teacher in Course 5 by another teacher"
 217          );
 218  
 219          // Test the number of contexts returned matches the Course contexts created with notes.
 220          $contextlist = provider::get_contexts_for_userid($teacher1->id);
 221          $this->assertEmpty(array_diff($coursecontextids, $contextlist->get_contextids()));
 222  
 223          $approvedcontextlist = new approved_contextlist($teacher1, 'core_notes', $contextlist->get_contextids());
 224  
 225          // Retrieve User notes created by the teacher.
 226          provider::export_user_data($approvedcontextlist);
 227  
 228          // Test the core_notes data is exported at the Course context level and has content.
 229          foreach ($contextlist as $context) {
 230              $this->assertEquals(CONTEXT_COURSE, $context->contextlevel);
 231  
 232              /** @var \core_privacy\tests\request\content_writer $writer */
 233              $writer = writer::with_context($context);
 234              $this->assertTrue($writer->has_any_data());
 235          }
 236      }
 237  
 238      /**
 239       * Test for provider::delete_data_for_all_users_in_context().
 240       */
 241      public function test_delete_data_for_all_users_in_context() {
 242          global $DB;
 243  
 244          // Test setup.
 245          $this->resetAfterTest(true);
 246          $this->setAdminUser();
 247          set_config('enablenotes', true);
 248  
 249          $teacher = $this->getDataGenerator()->create_user();
 250          $this->setUser($teacher);
 251          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 252  
 253          $nocourses = 2;
 254          $nostudents = 5;
 255          $nonotes = 7;
 256          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 257  
 258          $n = 0;
 259          for ($c = 0; $c < $nocourses; $c++) {
 260              // Create a Course, then enrol a teacher and enrol 2 students.
 261              $course = $this->getDataGenerator()->create_course();
 262              $coursecontext = \context_course::instance($course->id);
 263  
 264              role_assign($teacherrole->id, $teacher->id, $coursecontext->id);
 265  
 266              for ($s = 0; $s < $nostudents; $s++) {
 267                  if ($n < $nonotes) {
 268                      $student = $this->getDataGenerator()->create_user();
 269                      role_assign($studentrole->id, $student->id, $coursecontext->id);
 270  
 271                      // Create test note data.
 272                      $this->help_create_user_note(
 273                          $student->id,
 274                          NOTES_STATE_PUBLIC,
 275                          $course->id,
 276                          "Test user note for student $s in Course $c"
 277                      );
 278                  }
 279                  $n++;
 280              }
 281          }
 282  
 283          // Test the number of contexts returned equals the number of Courses created with user notes for its students.
 284          $contextlist = provider::get_contexts_for_userid($teacher->id);
 285          $this->assertCount($nocourses, $contextlist->get_contextids());
 286  
 287          // Test the created user note records in mdl_post table matches the test number of user notes specified.
 288          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 289          $this->assertCount($nonotes, $notes);
 290  
 291          // Delete all user note records in mdl_post table by the specified Course context.
 292          foreach ($contextlist->get_contexts() as $context) {
 293              provider::delete_data_for_all_users_in_context($context);
 294          }
 295  
 296          // Test the core_note records in mdl_post table is equals zero.
 297          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 298          $this->assertCount(0, $notes);
 299      }
 300  
 301      /**
 302       * Test for provider::delete_data_for_user().
 303       */
 304      public function test_delete_data_for_user() {
 305          global $DB;
 306  
 307          // Test setup.
 308          $this->resetAfterTest(true);
 309          $this->setAdminUser();
 310          set_config('enablenotes', true);
 311  
 312          $teacher = $this->getDataGenerator()->create_user();
 313          $this->setUser($teacher);
 314          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 315  
 316          $nocourses = 2;
 317          $nostudents = 5;
 318          $nonotes = 7;
 319          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 320  
 321          $n = 0;
 322          for ($c = 0; $c < $nocourses; $c++) {
 323              // Create a Course, then enrol a teacher and enrol 2 students.
 324              $course = $this->getDataGenerator()->create_course();
 325              $coursecontext = \context_course::instance($course->id);
 326  
 327              role_assign($teacherrole->id, $teacher->id, $coursecontext->id);
 328  
 329              for ($s = 0; $s < $nostudents; $s++) {
 330                  if ($n < $nonotes) {
 331                      $student = $this->getDataGenerator()->create_user();
 332                      role_assign($studentrole->id, $student->id, $coursecontext->id);
 333  
 334                      // Create test note data.
 335                      $this->help_create_user_note(
 336                          $student->id,
 337                          NOTES_STATE_PUBLIC,
 338                          $course->id,
 339                          "Test user note for student $s in Course $c"
 340                      );
 341                  }
 342                  $n++;
 343              }
 344          }
 345  
 346          // Test the number of contexts returned equals the number of Courses created with user notes for its students.
 347          $contextlist = provider::get_contexts_for_userid($teacher->id);
 348          $this->assertCount($nocourses, $contextlist->get_contextids());
 349  
 350          // Test the created user note records in mdl_post table matches the test number of user notes specified.
 351          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 352          $this->assertCount($nonotes, $notes);
 353  
 354          // Delete all user note records in mdl_post table created by the specified teacher.
 355          $approvedcontextlist = new approved_contextlist($teacher, 'core_notes', $contextlist->get_contextids());
 356          provider::delete_data_for_user($approvedcontextlist);
 357  
 358          // Test the core_note records in mdl_post table is equals zero.
 359          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 360          $this->assertCount(0, $notes);
 361      }
 362  
 363      /**
 364       * Test that only users within a course context are fetched.
 365       */
 366      public function test_get_users_in_context() {
 367          global $DB;
 368  
 369          $this->resetAfterTest(true);
 370  
 371          $component = 'core_notes';
 372          // Test setup.
 373          $this->setAdminUser();
 374          set_config('enablenotes', true);
 375          // Create a teacher.
 376          $teacher1 = $this->getDataGenerator()->create_user();
 377          $this->setUser($teacher1);
 378          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 379          // Create a student.
 380          $student = $this->getDataGenerator()->create_user();
 381          // Create student2.
 382          $student2 = $this->getDataGenerator()->create_user();
 383          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 384  
 385          // Create courses, then enrol a teacher and a student.
 386          $nocourses = 3;
 387          for ($c = 1; $c <= $nocourses; $c++) {
 388              ${'course' . $c} = $this->getDataGenerator()->create_course();
 389              ${'coursecontext' . $c} = \context_course::instance(${'course' . $c}->id);
 390  
 391              role_assign($teacherrole->id, $teacher1->id, ${'coursecontext' . $c}->id);
 392              role_assign($studentrole->id, $student->id, ${'coursecontext' . $c}->id);
 393              role_assign($studentrole->id, $student2->id, ${'coursecontext' . $c}->id);
 394          }
 395          // The list of users in coursecontext1 should be empty (related data still have not been created).
 396          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 397          provider::get_users_in_context($userlist1);
 398          $this->assertCount(0, $userlist1);
 399          // The list of users in coursecontext2 should be empty (related data still have not been created).
 400          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 401          provider::get_users_in_context($userlist2);
 402          $this->assertCount(0, $userlist2);
 403          // The list of users in coursecontext3 should be empty (related data still have not been created).
 404          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 405          provider::get_users_in_context($userlist3);
 406          $this->assertCount(0, $userlist3);
 407  
 408          // Create private user notes (i.e. NOTES_STATE_DRAFT) for student in course1 and course2 written by the teacher.
 409          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course1->id,
 410              "Test private user note about the student in Course 1 by the teacher");
 411          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course2->id,
 412              "Test private user note about the student in Course 2 by the teacher");
 413  
 414          // The list of users in coursecontext1 should return one user (teacher1).
 415          provider::get_users_in_context($userlist1);
 416          $this->assertCount(1, $userlist1);
 417          $this->assertTrue(in_array($teacher1->id, $userlist1->get_userids()));
 418          // The list of users in coursecontext2 should return one user (teacher1).
 419          provider::get_users_in_context($userlist2);
 420          $this->assertCount(1, $userlist2);
 421          $this->assertTrue(in_array($teacher1->id, $userlist2->get_userids()));
 422          // The list of users in coursecontext3 should not return any users.
 423          provider::get_users_in_context($userlist3);
 424          $this->assertCount(0, $userlist3);
 425  
 426          // Create public user note (i.e. NOTES_STATE_PUBLIC) for student in course3 written by the teacher.
 427          $this->help_create_user_note($student->id, NOTES_STATE_PUBLIC, $course3->id,
 428              "Test public user note about the student in Course 3 by the teacher");
 429  
 430          // The list of users in coursecontext3 should return 2 users (teacher and student).
 431          provider::get_users_in_context($userlist3);
 432          $this->assertCount(2, $userlist3);
 433          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 434          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 435  
 436          // Create site user note (i.e. NOTES_STATE_SITE) for student2 in course3 written by the teacher.
 437          $this->help_create_user_note($student2->id, NOTES_STATE_SITE, $course3->id,
 438              "Test site-wide user note about student2 in Course 3 by the teacher"
 439          );
 440  
 441          // The list of users in coursecontext3 should return 3 users (teacher, student and student2).
 442          provider::get_users_in_context($userlist3);
 443          $this->assertCount(3, $userlist3);
 444          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 445          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 446          $this->assertTrue(in_array($student2->id, $userlist3->get_userids()));
 447  
 448          // The list of users should not return any users in a different context than course context.
 449          $contextsystem = \context_system::instance();
 450          $userlist4 = new \core_privacy\local\request\userlist($contextsystem, $component);
 451          provider::get_users_in_context($userlist4);
 452          $this->assertCount(0, $userlist4);
 453      }
 454  
 455      /**
 456       * Test that data for users in approved userlist is deleted.
 457       */
 458      public function test_delete_data_for_users() {
 459          global $DB;
 460  
 461          $this->resetAfterTest(true);
 462  
 463          $component = 'core_notes';
 464          // Test setup.
 465          $this->setAdminUser();
 466          set_config('enablenotes', true);
 467          // Create a teacher.
 468          $teacher1 = $this->getDataGenerator()->create_user();
 469          $this->setUser($teacher1);
 470          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 471          // Create a student.
 472          $student = $this->getDataGenerator()->create_user();
 473          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 474  
 475          // Create Courses, then enrol a teacher and a student.
 476          $nocourses = 3;
 477          for ($c = 1; $c <= $nocourses; $c++) {
 478              ${'course' . $c} = $this->getDataGenerator()->create_course();
 479              ${'coursecontext' . $c} = \context_course::instance(${'course' . $c}->id);
 480  
 481              role_assign($teacherrole->id, $teacher1->id, ${'coursecontext' . $c}->id);
 482              role_assign($studentrole->id, $student->id, ${'coursecontext' . $c}->id);
 483          }
 484  
 485          // Create private notes for student in the course1 and course2 written by the teacher.
 486          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course1->id,
 487              "Test private user note about the student in Course 1 by the teacher");
 488          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course2->id,
 489              "Test private user note about the student in Course 2 by the teacher");
 490          // Create public notes for student in the course3 written by the teacher.
 491          $this->help_create_user_note($student->id, NOTES_STATE_PUBLIC, $course3->id,
 492              "Test public user note about the student in Course 3 by the teacher");
 493  
 494          // The list of users in coursecontext1 should return one user (teacher1).
 495          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 496          provider::get_users_in_context($userlist1);
 497          $this->assertCount(1, $userlist1);
 498          $this->assertTrue(in_array($teacher1->id, $userlist1->get_userids()));
 499          // The list of users in coursecontext2 should return one user (teacher1).
 500          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 501          provider::get_users_in_context($userlist2);
 502          $this->assertCount(1, $userlist2);
 503          $this->assertTrue(in_array($teacher1->id, $userlist2->get_userids()));
 504          // The list of users in coursecontext3 should return two users (teacher1 and student).
 505          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 506          provider::get_users_in_context($userlist3);
 507          $this->assertCount(2, $userlist3);
 508          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 509          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 510  
 511          $approvedlist = new approved_userlist($coursecontext3, $component, [$student->id]);
 512          // Delete using delete_data_for_user.
 513          provider::delete_data_for_users($approvedlist);
 514          // Re-fetch users in the coursecontext3.
 515          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 516          // The user data in coursecontext3 should not be removed.
 517          provider::get_users_in_context($userlist3);
 518          $this->assertCount(2, $userlist3);
 519          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 520          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 521  
 522          $approvedlist = new approved_userlist($coursecontext3, $component, [$teacher1->id]);
 523          // Delete using delete_data_for_user.
 524          provider::delete_data_for_users($approvedlist);
 525          // Re-fetch users in the coursecontext3.
 526          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 527          // The user data in coursecontext3 should be removed.
 528          provider::get_users_in_context($userlist3);
 529          $this->assertCount(0, $userlist3);
 530  
 531          // Re-fetch users in the coursecontext1.
 532          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 533          provider::get_users_in_context($userlist1);
 534          $this->assertCount(1, $userlist1);
 535  
 536          $approvedlist = new approved_userlist($coursecontext1, $component, [$student->id]);
 537          // Delete using delete_data_for_user.
 538          provider::delete_data_for_users($approvedlist);
 539          // Re-fetch users in the coursecontext1.
 540          $userlist3 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 541          // The user data in coursecontext1 should not be removed.
 542          provider::get_users_in_context($userlist3);
 543          $this->assertCount(1, $userlist3);
 544          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 545  
 546          $approvedlist = new approved_userlist($coursecontext1, $component, [$teacher1->id]);
 547          // Delete using delete_data_for_user.
 548          provider::delete_data_for_users($approvedlist);
 549          // Re-fetch users in the coursecontext1.
 550          $userlist3 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 551          // The user data in coursecontext1 should be removed.
 552          provider::get_users_in_context($userlist3);
 553          $this->assertCount(0, $userlist3);
 554  
 555          // Re-fetch users in the coursecontext2.
 556          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 557          provider::get_users_in_context($userlist2);
 558          $this->assertCount(1, $userlist2);
 559  
 560          // The list of users should not return any users for contexts different than course context.
 561          $systemcontext = \context_system::instance();
 562          $userlist4 = new \core_privacy\local\request\userlist($systemcontext, $component);
 563          provider::get_users_in_context($userlist4);
 564          $this->assertCount(0, $userlist4);
 565      }
 566  
 567      /**
 568       * Helper function to create user notes for testing.
 569       *
 570       * @param int       $userid   The ID of the User associated with the note.
 571       * @param string    $state    The publish status
 572       * @param int       $courseid The ID of the Course associated with the note.
 573       * @param string    $content  The note content.
 574       */
 575      protected function help_create_user_note($userid, $state, $courseid, $content) {
 576          $note = (object) [
 577              'userid' => $userid,
 578              'publishstate' => $state,
 579              'courseid' => $courseid,
 580              'content' => $content,
 581          ];
 582          note_save($note);
 583      }
 584  }