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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 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              $writer = writer::with_context($context);
 233              $this->assertTrue($writer->has_any_data());
 234          }
 235      }
 236  
 237      /**
 238       * Test for provider::delete_data_for_all_users_in_context().
 239       */
 240      public function test_delete_data_for_all_users_in_context() {
 241          global $DB;
 242  
 243          // Test setup.
 244          $this->resetAfterTest(true);
 245          $this->setAdminUser();
 246          set_config('enablenotes', true);
 247  
 248          $teacher = $this->getDataGenerator()->create_user();
 249          $this->setUser($teacher);
 250          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 251  
 252          $nocourses = 2;
 253          $nostudents = 5;
 254          $nonotes = 7;
 255          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 256  
 257          $n = 0;
 258          for ($c = 0; $c < $nocourses; $c++) {
 259              // Create a Course, then enrol a teacher and enrol 2 students.
 260              $course = $this->getDataGenerator()->create_course();
 261              $coursecontext = \context_course::instance($course->id);
 262  
 263              role_assign($teacherrole->id, $teacher->id, $coursecontext->id);
 264  
 265              for ($s = 0; $s < $nostudents; $s++) {
 266                  if ($n < $nonotes) {
 267                      $student = $this->getDataGenerator()->create_user();
 268                      role_assign($studentrole->id, $student->id, $coursecontext->id);
 269  
 270                      // Create test note data.
 271                      $this->help_create_user_note(
 272                          $student->id,
 273                          NOTES_STATE_PUBLIC,
 274                          $course->id,
 275                          "Test user note for student $s in Course $c"
 276                      );
 277                  }
 278                  $n++;
 279              }
 280          }
 281  
 282          // Test the number of contexts returned equals the number of Courses created with user notes for its students.
 283          $contextlist = provider::get_contexts_for_userid($teacher->id);
 284          $this->assertCount($nocourses, $contextlist->get_contextids());
 285  
 286          // Test the created user note records in mdl_post table matches the test number of user notes specified.
 287          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 288          $this->assertCount($nonotes, $notes);
 289  
 290          // Delete all user note records in mdl_post table by the specified Course context.
 291          foreach ($contextlist->get_contexts() as $context) {
 292              provider::delete_data_for_all_users_in_context($context);
 293          }
 294  
 295          // Test the core_note records in mdl_post table is equals zero.
 296          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 297          $this->assertCount(0, $notes);
 298      }
 299  
 300      /**
 301       * Test for provider::delete_data_for_user().
 302       */
 303      public function test_delete_data_for_user() {
 304          global $DB;
 305  
 306          // Test setup.
 307          $this->resetAfterTest(true);
 308          $this->setAdminUser();
 309          set_config('enablenotes', true);
 310  
 311          $teacher = $this->getDataGenerator()->create_user();
 312          $this->setUser($teacher);
 313          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 314  
 315          $nocourses = 2;
 316          $nostudents = 5;
 317          $nonotes = 7;
 318          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 319  
 320          $n = 0;
 321          for ($c = 0; $c < $nocourses; $c++) {
 322              // Create a Course, then enrol a teacher and enrol 2 students.
 323              $course = $this->getDataGenerator()->create_course();
 324              $coursecontext = \context_course::instance($course->id);
 325  
 326              role_assign($teacherrole->id, $teacher->id, $coursecontext->id);
 327  
 328              for ($s = 0; $s < $nostudents; $s++) {
 329                  if ($n < $nonotes) {
 330                      $student = $this->getDataGenerator()->create_user();
 331                      role_assign($studentrole->id, $student->id, $coursecontext->id);
 332  
 333                      // Create test note data.
 334                      $this->help_create_user_note(
 335                          $student->id,
 336                          NOTES_STATE_PUBLIC,
 337                          $course->id,
 338                          "Test user note for student $s in Course $c"
 339                      );
 340                  }
 341                  $n++;
 342              }
 343          }
 344  
 345          // Test the number of contexts returned equals the number of Courses created with user notes for its students.
 346          $contextlist = provider::get_contexts_for_userid($teacher->id);
 347          $this->assertCount($nocourses, $contextlist->get_contextids());
 348  
 349          // Test the created user note records in mdl_post table matches the test number of user notes specified.
 350          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 351          $this->assertCount($nonotes, $notes);
 352  
 353          // Delete all user note records in mdl_post table created by the specified teacher.
 354          $approvedcontextlist = new approved_contextlist($teacher, 'core_notes', $contextlist->get_contextids());
 355          provider::delete_data_for_user($approvedcontextlist);
 356  
 357          // Test the core_note records in mdl_post table is equals zero.
 358          $notes = $DB->get_records('post', ['module' => 'notes', 'usermodified' => $teacher->id]);
 359          $this->assertCount(0, $notes);
 360      }
 361  
 362      /**
 363       * Test that only users within a course context are fetched.
 364       */
 365      public function test_get_users_in_context() {
 366          global $DB;
 367  
 368          $this->resetAfterTest(true);
 369  
 370          $component = 'core_notes';
 371          // Test setup.
 372          $this->setAdminUser();
 373          set_config('enablenotes', true);
 374          // Create a teacher.
 375          $teacher1 = $this->getDataGenerator()->create_user();
 376          $this->setUser($teacher1);
 377          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 378          // Create a student.
 379          $student = $this->getDataGenerator()->create_user();
 380          // Create student2.
 381          $student2 = $this->getDataGenerator()->create_user();
 382          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 383  
 384          // Create courses, then enrol a teacher and a student.
 385          $nocourses = 3;
 386          for ($c = 1; $c <= $nocourses; $c++) {
 387              ${'course' . $c} = $this->getDataGenerator()->create_course();
 388              ${'coursecontext' . $c} = \context_course::instance(${'course' . $c}->id);
 389  
 390              role_assign($teacherrole->id, $teacher1->id, ${'coursecontext' . $c}->id);
 391              role_assign($studentrole->id, $student->id, ${'coursecontext' . $c}->id);
 392              role_assign($studentrole->id, $student2->id, ${'coursecontext' . $c}->id);
 393          }
 394          // The list of users in coursecontext1 should be empty (related data still have not been created).
 395          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 396          provider::get_users_in_context($userlist1);
 397          $this->assertCount(0, $userlist1);
 398          // The list of users in coursecontext2 should be empty (related data still have not been created).
 399          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 400          provider::get_users_in_context($userlist2);
 401          $this->assertCount(0, $userlist2);
 402          // The list of users in coursecontext3 should be empty (related data still have not been created).
 403          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 404          provider::get_users_in_context($userlist3);
 405          $this->assertCount(0, $userlist3);
 406  
 407          // Create private user notes (i.e. NOTES_STATE_DRAFT) for student in course1 and course2 written by the teacher.
 408          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course1->id,
 409              "Test private user note about the student in Course 1 by the teacher");
 410          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course2->id,
 411              "Test private user note about the student in Course 2 by the teacher");
 412  
 413          // The list of users in coursecontext1 should return one user (teacher1).
 414          provider::get_users_in_context($userlist1);
 415          $this->assertCount(1, $userlist1);
 416          $this->assertTrue(in_array($teacher1->id, $userlist1->get_userids()));
 417          // The list of users in coursecontext2 should return one user (teacher1).
 418          provider::get_users_in_context($userlist2);
 419          $this->assertCount(1, $userlist2);
 420          $this->assertTrue(in_array($teacher1->id, $userlist2->get_userids()));
 421          // The list of users in coursecontext3 should not return any users.
 422          provider::get_users_in_context($userlist3);
 423          $this->assertCount(0, $userlist3);
 424  
 425          // Create public user note (i.e. NOTES_STATE_PUBLIC) for student in course3 written by the teacher.
 426          $this->help_create_user_note($student->id, NOTES_STATE_PUBLIC, $course3->id,
 427              "Test public user note about the student in Course 3 by the teacher");
 428  
 429          // The list of users in coursecontext3 should return 2 users (teacher and student).
 430          provider::get_users_in_context($userlist3);
 431          $this->assertCount(2, $userlist3);
 432          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 433          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 434  
 435          // Create site user note (i.e. NOTES_STATE_SITE) for student2 in course3 written by the teacher.
 436          $this->help_create_user_note($student2->id, NOTES_STATE_SITE, $course3->id,
 437              "Test site-wide user note about student2 in Course 3 by the teacher"
 438          );
 439  
 440          // The list of users in coursecontext3 should return 3 users (teacher, student and student2).
 441          provider::get_users_in_context($userlist3);
 442          $this->assertCount(3, $userlist3);
 443          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 444          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 445          $this->assertTrue(in_array($student2->id, $userlist3->get_userids()));
 446  
 447          // The list of users should not return any users in a different context than course context.
 448          $contextsystem = \context_system::instance();
 449          $userlist4 = new \core_privacy\local\request\userlist($contextsystem, $component);
 450          provider::get_users_in_context($userlist4);
 451          $this->assertCount(0, $userlist4);
 452      }
 453  
 454      /**
 455       * Test that data for users in approved userlist is deleted.
 456       */
 457      public function test_delete_data_for_users() {
 458          global $DB;
 459  
 460          $this->resetAfterTest(true);
 461  
 462          $component = 'core_notes';
 463          // Test setup.
 464          $this->setAdminUser();
 465          set_config('enablenotes', true);
 466          // Create a teacher.
 467          $teacher1 = $this->getDataGenerator()->create_user();
 468          $this->setUser($teacher1);
 469          $teacherrole = $DB->get_record('role', array('shortname' => 'teacher'));
 470          // Create a student.
 471          $student = $this->getDataGenerator()->create_user();
 472          $studentrole = $DB->get_record('role', array('shortname' => 'student'));
 473  
 474          // Create Courses, then enrol a teacher and a student.
 475          $nocourses = 3;
 476          for ($c = 1; $c <= $nocourses; $c++) {
 477              ${'course' . $c} = $this->getDataGenerator()->create_course();
 478              ${'coursecontext' . $c} = \context_course::instance(${'course' . $c}->id);
 479  
 480              role_assign($teacherrole->id, $teacher1->id, ${'coursecontext' . $c}->id);
 481              role_assign($studentrole->id, $student->id, ${'coursecontext' . $c}->id);
 482          }
 483  
 484          // Create private notes for student in the course1 and course2 written by the teacher.
 485          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course1->id,
 486              "Test private user note about the student in Course 1 by the teacher");
 487          $this->help_create_user_note($student->id, NOTES_STATE_DRAFT, $course2->id,
 488              "Test private user note about the student in Course 2 by the teacher");
 489          // Create public notes for student in the course3 written by the teacher.
 490          $this->help_create_user_note($student->id, NOTES_STATE_PUBLIC, $course3->id,
 491              "Test public user note about the student in Course 3 by the teacher");
 492  
 493          // The list of users in coursecontext1 should return one user (teacher1).
 494          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 495          provider::get_users_in_context($userlist1);
 496          $this->assertCount(1, $userlist1);
 497          $this->assertTrue(in_array($teacher1->id, $userlist1->get_userids()));
 498          // The list of users in coursecontext2 should return one user (teacher1).
 499          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 500          provider::get_users_in_context($userlist2);
 501          $this->assertCount(1, $userlist2);
 502          $this->assertTrue(in_array($teacher1->id, $userlist2->get_userids()));
 503          // The list of users in coursecontext3 should return two users (teacher1 and student).
 504          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 505          provider::get_users_in_context($userlist3);
 506          $this->assertCount(2, $userlist3);
 507          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 508          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 509  
 510          $approvedlist = new approved_userlist($coursecontext3, $component, [$student->id]);
 511          // Delete using delete_data_for_user.
 512          provider::delete_data_for_users($approvedlist);
 513          // Re-fetch users in the coursecontext3.
 514          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 515          // The user data in coursecontext3 should not be removed.
 516          provider::get_users_in_context($userlist3);
 517          $this->assertCount(2, $userlist3);
 518          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 519          $this->assertTrue(in_array($student->id, $userlist3->get_userids()));
 520  
 521          $approvedlist = new approved_userlist($coursecontext3, $component, [$teacher1->id]);
 522          // Delete using delete_data_for_user.
 523          provider::delete_data_for_users($approvedlist);
 524          // Re-fetch users in the coursecontext3.
 525          $userlist3 = new \core_privacy\local\request\userlist($coursecontext3, $component);
 526          // The user data in coursecontext3 should be removed.
 527          provider::get_users_in_context($userlist3);
 528          $this->assertCount(0, $userlist3);
 529  
 530          // Re-fetch users in the coursecontext1.
 531          $userlist1 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 532          provider::get_users_in_context($userlist1);
 533          $this->assertCount(1, $userlist1);
 534  
 535          $approvedlist = new approved_userlist($coursecontext1, $component, [$student->id]);
 536          // Delete using delete_data_for_user.
 537          provider::delete_data_for_users($approvedlist);
 538          // Re-fetch users in the coursecontext1.
 539          $userlist3 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 540          // The user data in coursecontext1 should not be removed.
 541          provider::get_users_in_context($userlist3);
 542          $this->assertCount(1, $userlist3);
 543          $this->assertTrue(in_array($teacher1->id, $userlist3->get_userids()));
 544  
 545          $approvedlist = new approved_userlist($coursecontext1, $component, [$teacher1->id]);
 546          // Delete using delete_data_for_user.
 547          provider::delete_data_for_users($approvedlist);
 548          // Re-fetch users in the coursecontext1.
 549          $userlist3 = new \core_privacy\local\request\userlist($coursecontext1, $component);
 550          // The user data in coursecontext1 should be removed.
 551          provider::get_users_in_context($userlist3);
 552          $this->assertCount(0, $userlist3);
 553  
 554          // Re-fetch users in the coursecontext2.
 555          $userlist2 = new \core_privacy\local\request\userlist($coursecontext2, $component);
 556          provider::get_users_in_context($userlist2);
 557          $this->assertCount(1, $userlist2);
 558  
 559          // The list of users should not return any users for contexts different than course context.
 560          $systemcontext = \context_system::instance();
 561          $userlist4 = new \core_privacy\local\request\userlist($systemcontext, $component);
 562          provider::get_users_in_context($userlist4);
 563          $this->assertCount(0, $userlist4);
 564      }
 565  
 566      /**
 567       * Helper function to create user notes for testing.
 568       *
 569       * @param int       $userid   The ID of the User associated with the note.
 570       * @param string    $state    The publish status
 571       * @param int       $courseid The ID of the Course associated with the note.
 572       * @param string    $content  The note content.
 573       */
 574      protected function help_create_user_note($userid, $state, $courseid, $content) {
 575          $note = (object) [
 576              'userid' => $userid,
 577              'publishstate' => $state,
 578              'courseid' => $courseid,
 579              'content' => $content,
 580          ];
 581          note_save($note);
 582      }
 583  }