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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 and 403] [Versions 402 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 (some of) mod/quiz/locallib.php.
  19   *
  20   * @package    mod_quiz
  21   * @category   test
  22   * @copyright  2008 Tim Hunt
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  namespace mod_quiz;
  26  
  27  use mod_quiz\output\renderer;
  28  use mod_quiz\question\display_options;
  29  
  30  defined('MOODLE_INTERNAL') || die();
  31  
  32  global $CFG;
  33  require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  34  require_once($CFG->dirroot . '/mod/quiz/tests/quiz_question_helper_test_trait.php');
  35  
  36  /**
  37   * Unit tests for (some of) mod/quiz/locallib.php.
  38   *
  39   * @copyright  2008 Tim Hunt
  40   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  41   */
  42  class locallib_test extends \advanced_testcase {
  43  
  44      use \quiz_question_helper_test_trait;
  45  
  46      public function test_quiz_rescale_grade() {
  47          $quiz = new \stdClass();
  48          $quiz->decimalpoints = 2;
  49          $quiz->questiondecimalpoints = 3;
  50          $quiz->grade = 10;
  51          $quiz->sumgrades = 10;
  52          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, false), 0.12345678);
  53          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, true), format_float(0.12, 2));
  54          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, 'question'),
  55              format_float(0.123, 3));
  56          $quiz->sumgrades = 5;
  57          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, false), 0.24691356);
  58          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, true), format_float(0.25, 2));
  59          $this->assertEquals(quiz_rescale_grade(0.12345678, $quiz, 'question'),
  60              format_float(0.247, 3));
  61      }
  62  
  63      public function quiz_attempt_state_data_provider() {
  64          return [
  65              [quiz_attempt::IN_PROGRESS, null, null, display_options::DURING],
  66              [quiz_attempt::FINISHED, -90, null, display_options::IMMEDIATELY_AFTER],
  67              [quiz_attempt::FINISHED, -7200, null, display_options::LATER_WHILE_OPEN],
  68              [quiz_attempt::FINISHED, -7200, 3600, display_options::LATER_WHILE_OPEN],
  69              [quiz_attempt::FINISHED, -30, 30, display_options::IMMEDIATELY_AFTER],
  70              [quiz_attempt::FINISHED, -90, -30, display_options::AFTER_CLOSE],
  71              [quiz_attempt::FINISHED, -7200, -3600, display_options::AFTER_CLOSE],
  72              [quiz_attempt::FINISHED, -90, -3600, display_options::AFTER_CLOSE],
  73              [quiz_attempt::ABANDONED, -10000000, null, display_options::LATER_WHILE_OPEN],
  74              [quiz_attempt::ABANDONED, -7200, 3600, display_options::LATER_WHILE_OPEN],
  75              [quiz_attempt::ABANDONED, -7200, -3600, display_options::AFTER_CLOSE],
  76          ];
  77      }
  78  
  79      /**
  80       * @dataProvider quiz_attempt_state_data_provider
  81       *
  82       * @param string $attemptstate as in the quiz_attempts.state DB column.
  83       * @param int|null $relativetimefinish time relative to now when the attempt finished, or null for 0.
  84       * @param int|null $relativetimeclose time relative to now when the quiz closes, or null for 0.
  85       * @param int $expectedstate expected result. One of the display_options constants.
  86       * @covers ::quiz_attempt_state
  87       */
  88      public function test_quiz_attempt_state(string $attemptstate,
  89              ?int $relativetimefinish, ?int $relativetimeclose, int $expectedstate) {
  90  
  91          $attempt = new \stdClass();
  92          $attempt->state = $attemptstate;
  93          if ($relativetimefinish === null) {
  94              $attempt->timefinish = 0;
  95          } else {
  96              $attempt->timefinish = time() + $relativetimefinish;
  97          }
  98  
  99          $quiz = new \stdClass();
 100          if ($relativetimeclose === null) {
 101              $quiz->timeclose = 0;
 102          } else {
 103              $quiz->timeclose = time() + $relativetimeclose;
 104          }
 105  
 106          $this->assertEquals($expectedstate, quiz_attempt_state($quiz, $attempt));
 107      }
 108  
 109      /**
 110       * @covers ::quiz_question_tostring
 111       */
 112      public function test_quiz_question_tostring() {
 113          $question = new \stdClass();
 114          $question->qtype = 'multichoice';
 115          $question->name = 'The question name';
 116          $question->questiontext = '<p>What sort of <b>inequality</b> is x &lt; y<img alt="?" src="..."></p>';
 117          $question->questiontextformat = FORMAT_HTML;
 118  
 119          $summary = quiz_question_tostring($question);
 120          $this->assertEquals('<span class="questionname">The question name</span> ' .
 121                  '<span class="questiontext">What sort of INEQUALITY is x &lt; y[?]' . "\n" . '</span>', $summary);
 122      }
 123  
 124      /**
 125       * @covers ::quiz_question_tostring
 126       */
 127      public function test_quiz_question_tostring_does_not_filter() {
 128          $question = new \stdClass();
 129          $question->qtype = 'multichoice';
 130          $question->name = 'The question name';
 131          $question->questiontext = '<p>No emoticons here :-)</p>';
 132          $question->questiontextformat = FORMAT_HTML;
 133  
 134          $summary = quiz_question_tostring($question);
 135          $this->assertEquals('<span class="questionname">The question name</span> ' .
 136                  '<span class="questiontext">No emoticons here :-)' . "\n</span>", $summary);
 137      }
 138  
 139      /**
 140       * Test quiz_view
 141       * @return void
 142       */
 143      public function test_quiz_view() {
 144          global $CFG;
 145  
 146          $CFG->enablecompletion = 1;
 147          $this->resetAfterTest();
 148  
 149          $this->setAdminUser();
 150          // Setup test data.
 151          $course = $this->getDataGenerator()->create_course(['enablecompletion' => 1]);
 152          $quiz = $this->getDataGenerator()->create_module('quiz', ['course' => $course->id],
 153                                                              ['completion' => 2, 'completionview' => 1]);
 154          $context = \context_module::instance($quiz->cmid);
 155          $cm = get_coursemodule_from_instance('quiz', $quiz->id);
 156  
 157          // Trigger and capture the event.
 158          $sink = $this->redirectEvents();
 159  
 160          quiz_view($quiz, $course, $cm, $context);
 161  
 162          $events = $sink->get_events();
 163          // 2 additional events thanks to completion.
 164          $this->assertCount(3, $events);
 165          $event = array_shift($events);
 166  
 167          // Checking that the event contains the expected values.
 168          $this->assertInstanceOf('\mod_quiz\event\course_module_viewed', $event);
 169          $this->assertEquals($context, $event->get_context());
 170          $moodleurl = new \moodle_url('/mod/quiz/view.php', ['id' => $cm->id]);
 171          $this->assertEquals($moodleurl, $event->get_url());
 172          $this->assertEventContextNotUsed($event);
 173          $this->assertNotEmpty($event->get_name());
 174          // Check completion status.
 175          $completion = new \completion_info($course);
 176          $completiondata = $completion->get_data($cm);
 177          $this->assertEquals(1, $completiondata->completionstate);
 178      }
 179  
 180      /**
 181       * Return false when there are not overrides for this quiz instance.
 182       */
 183      public function test_quiz_is_overriden_calendar_event_no_override() {
 184          global $CFG, $DB;
 185  
 186          $this->resetAfterTest();
 187          $this->setAdminUser();
 188  
 189          $generator = $this->getDataGenerator();
 190          $user = $generator->create_user();
 191          $course = $generator->create_course();
 192          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 193          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 194  
 195          $event = new \calendar_event((object)[
 196              'modulename' => 'quiz',
 197              'instance' => $quiz->id,
 198              'userid' => $user->id
 199          ]);
 200  
 201          $this->assertFalse(quiz_is_overriden_calendar_event($event));
 202      }
 203  
 204      /**
 205       * Return false if the given event isn't an quiz module event.
 206       */
 207      public function test_quiz_is_overriden_calendar_event_no_module_event() {
 208          global $CFG, $DB;
 209  
 210          $this->resetAfterTest();
 211          $this->setAdminUser();
 212  
 213          $generator = $this->getDataGenerator();
 214          $user = $generator->create_user();
 215          $course = $generator->create_course();
 216          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 217          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 218  
 219          $event = new \calendar_event((object)[
 220              'userid' => $user->id
 221          ]);
 222  
 223          $this->assertFalse(quiz_is_overriden_calendar_event($event));
 224      }
 225  
 226      /**
 227       * Return false if there is overrides for this use but they belong to another quiz
 228       * instance.
 229       */
 230      public function test_quiz_is_overriden_calendar_event_different_quiz_instance() {
 231          global $CFG, $DB;
 232  
 233          $this->resetAfterTest();
 234          $this->setAdminUser();
 235  
 236          $generator = $this->getDataGenerator();
 237          $user = $generator->create_user();
 238          $course = $generator->create_course();
 239          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 240          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 241          $quiz2 = $quizgenerator->create_instance(['course' => $course->id]);
 242  
 243          $event = new \calendar_event((object) [
 244              'modulename' => 'quiz',
 245              'instance' => $quiz->id,
 246              'userid' => $user->id
 247          ]);
 248  
 249          $record = (object) [
 250              'quiz' => $quiz2->id,
 251              'userid' => $user->id
 252          ];
 253  
 254          $DB->insert_record('quiz_overrides', $record);
 255  
 256          $this->assertFalse(quiz_is_overriden_calendar_event($event));
 257      }
 258  
 259      /**
 260       * Return true if there is a user override for this event and quiz instance.
 261       */
 262      public function test_quiz_is_overriden_calendar_event_user_override() {
 263          global $CFG, $DB;
 264  
 265          $this->resetAfterTest();
 266          $this->setAdminUser();
 267  
 268          $generator = $this->getDataGenerator();
 269          $user = $generator->create_user();
 270          $course = $generator->create_course();
 271          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 272          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 273  
 274          $event = new \calendar_event((object) [
 275              'modulename' => 'quiz',
 276              'instance' => $quiz->id,
 277              'userid' => $user->id
 278          ]);
 279  
 280          $record = (object) [
 281              'quiz' => $quiz->id,
 282              'userid' => $user->id
 283          ];
 284  
 285          $DB->insert_record('quiz_overrides', $record);
 286  
 287          $this->assertTrue(quiz_is_overriden_calendar_event($event));
 288      }
 289  
 290      /**
 291       * Return true if there is a group override for the event and quiz instance.
 292       */
 293      public function test_quiz_is_overriden_calendar_event_group_override() {
 294          global $CFG, $DB;
 295  
 296          $this->resetAfterTest();
 297          $this->setAdminUser();
 298  
 299          $generator = $this->getDataGenerator();
 300          $user = $generator->create_user();
 301          $course = $generator->create_course();
 302          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 303          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 304          $group = $this->getDataGenerator()->create_group(['courseid' => $quiz->course]);
 305          $groupid = $group->id;
 306          $userid = $user->id;
 307  
 308          $event = new \calendar_event((object) [
 309              'modulename' => 'quiz',
 310              'instance' => $quiz->id,
 311              'groupid' => $groupid
 312          ]);
 313  
 314          $record = (object) [
 315              'quiz' => $quiz->id,
 316              'groupid' => $groupid
 317          ];
 318  
 319          $DB->insert_record('quiz_overrides', $record);
 320  
 321          $this->assertTrue(quiz_is_overriden_calendar_event($event));
 322      }
 323  
 324      /**
 325       * Test test_quiz_get_user_timeclose().
 326       */
 327      public function test_quiz_get_user_timeclose() {
 328          global $DB;
 329  
 330          $this->resetAfterTest();
 331          $this->setAdminUser();
 332  
 333          $basetimestamp = time(); // The timestamp we will base the enddates on.
 334  
 335          // Create generator, course and quizzes.
 336          $student1 = $this->getDataGenerator()->create_user();
 337          $student2 = $this->getDataGenerator()->create_user();
 338          $student3 = $this->getDataGenerator()->create_user();
 339          $teacher = $this->getDataGenerator()->create_user();
 340          $course = $this->getDataGenerator()->create_course();
 341          $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');
 342  
 343          // Both quizzes close in two hours.
 344          $quiz1 = $quizgenerator->create_instance(['course' => $course->id, 'timeclose' => $basetimestamp + 7200]);
 345          $quiz2 = $quizgenerator->create_instance(['course' => $course->id, 'timeclose' => $basetimestamp + 7200]);
 346          $group1 = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 347          $group2 = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 348  
 349          $student1id = $student1->id;
 350          $student2id = $student2->id;
 351          $student3id = $student3->id;
 352          $teacherid = $teacher->id;
 353  
 354          // Users enrolments.
 355          $studentrole = $DB->get_record('role', ['shortname' => 'student']);
 356          $teacherrole = $DB->get_record('role', ['shortname' => 'editingteacher']);
 357          $this->getDataGenerator()->enrol_user($student1id, $course->id, $studentrole->id, 'manual');
 358          $this->getDataGenerator()->enrol_user($student2id, $course->id, $studentrole->id, 'manual');
 359          $this->getDataGenerator()->enrol_user($student3id, $course->id, $studentrole->id, 'manual');
 360          $this->getDataGenerator()->enrol_user($teacherid, $course->id, $teacherrole->id, 'manual');
 361  
 362          // Create groups.
 363          $group1 = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 364          $group2 = $this->getDataGenerator()->create_group(['courseid' => $course->id]);
 365          $group1id = $group1->id;
 366          $group2id = $group2->id;
 367          $this->getDataGenerator()->create_group_member(['userid' => $student1id, 'groupid' => $group1id]);
 368          $this->getDataGenerator()->create_group_member(['userid' => $student2id, 'groupid' => $group2id]);
 369  
 370          // Group 1 gets an group override for quiz 1 to close in three hours.
 371          $record1 = (object) [
 372              'quiz' => $quiz1->id,
 373              'groupid' => $group1id,
 374              'timeclose' => $basetimestamp + 10800 // In three hours.
 375          ];
 376          $DB->insert_record('quiz_overrides', $record1);
 377  
 378          // Let's test quiz 1 closes in three hours for user student 1 since member of group 1.
 379          // Quiz 2 closes in two hours.
 380          $this->setUser($student1id);
 381          $params = new \stdClass();
 382  
 383          $comparearray = [];
 384          $object = new \stdClass();
 385          $object->id = $quiz1->id;
 386          $object->usertimeclose = $basetimestamp + 10800; // The overriden timeclose for quiz 1.
 387  
 388          $comparearray[$quiz1->id] = $object;
 389  
 390          $object = new \stdClass();
 391          $object->id = $quiz2->id;
 392          $object->usertimeclose = $basetimestamp + 7200; // The unchanged timeclose for quiz 2.
 393  
 394          $comparearray[$quiz2->id] = $object;
 395  
 396          $this->assertEquals($comparearray, quiz_get_user_timeclose($course->id));
 397  
 398          // Let's test quiz 1 closes in two hours (the original value) for user student 3 since member of no group.
 399          $this->setUser($student3id);
 400          $params = new \stdClass();
 401  
 402          $comparearray = [];
 403          $object = new \stdClass();
 404          $object->id = $quiz1->id;
 405          $object->usertimeclose = $basetimestamp + 7200; // The original timeclose for quiz 1.
 406  
 407          $comparearray[$quiz1->id] = $object;
 408  
 409          $object = new \stdClass();
 410          $object->id = $quiz2->id;
 411          $object->usertimeclose = $basetimestamp + 7200; // The original timeclose for quiz 2.
 412  
 413          $comparearray[$quiz2->id] = $object;
 414  
 415          $this->assertEquals($comparearray, quiz_get_user_timeclose($course->id));
 416  
 417          // User 2 gets an user override for quiz 1 to close in four hours.
 418          $record2 = (object) [
 419              'quiz' => $quiz1->id,
 420              'userid' => $student2id,
 421              'timeclose' => $basetimestamp + 14400 // In four hours.
 422          ];
 423          $DB->insert_record('quiz_overrides', $record2);
 424  
 425          // Let's test quiz 1 closes in four hours for user student 2 since personally overriden.
 426          // Quiz 2 closes in two hours.
 427          $this->setUser($student2id);
 428  
 429          $comparearray = [];
 430          $object = new \stdClass();
 431          $object->id = $quiz1->id;
 432          $object->usertimeclose = $basetimestamp + 14400; // The overriden timeclose for quiz 1.
 433  
 434          $comparearray[$quiz1->id] = $object;
 435  
 436          $object = new \stdClass();
 437          $object->id = $quiz2->id;
 438          $object->usertimeclose = $basetimestamp + 7200; // The unchanged timeclose for quiz 2.
 439  
 440          $comparearray[$quiz2->id] = $object;
 441  
 442          $this->assertEquals($comparearray, quiz_get_user_timeclose($course->id));
 443  
 444          // Let's test a teacher sees the original times.
 445          // Quiz 1 and quiz 2 close in two hours.
 446          $this->setUser($teacherid);
 447  
 448          $comparearray = [];
 449          $object = new \stdClass();
 450          $object->id = $quiz1->id;
 451          $object->usertimeclose = $basetimestamp + 7200; // The unchanged timeclose for quiz 1.
 452  
 453          $comparearray[$quiz1->id] = $object;
 454  
 455          $object = new \stdClass();
 456          $object->id = $quiz2->id;
 457          $object->usertimeclose = $basetimestamp + 7200; // The unchanged timeclose for quiz 2.
 458  
 459          $comparearray[$quiz2->id] = $object;
 460  
 461          $this->assertEquals($comparearray, quiz_get_user_timeclose($course->id));
 462      }
 463  
 464      /**
 465       * This function creates a quiz with some standard (non-random) and some random questions.
 466       * The standard questions are created first and then random questions follow them.
 467       * So in a quiz with 3 standard question and 2 random question, the first random question is at slot 4.
 468       *
 469       * @param int $qnum Number of standard questions that should be created in the quiz.
 470       * @param int $randomqnum Number of random questions that should be created in the quiz.
 471       * @param array $questiontags Tags to be used for random questions.
 472       *      This is an array in the following format:
 473       *      [
 474       *          0 => ['foo', 'bar'],
 475       *          1 => ['baz', 'qux']
 476       *      ]
 477       * @param string[] $unusedtags Some additional tags to be created.
 478       * @return array An array of 2 elements: $quiz and $tagobjects.
 479       *      $tagobjects is an associative array of all created tag objects with its key being tag names.
 480       */
 481      private function setup_quiz_and_tags($qnum, $randomqnum, $questiontags = [], $unusedtags = []) {
 482          global $SITE;
 483  
 484          $tagobjects = [];
 485  
 486          // Get all the tags that need to be created.
 487          $alltags = [];
 488          foreach ($questiontags as $questiontag) {
 489              $alltags = array_merge($alltags, $questiontag);
 490          }
 491          $alltags = array_merge($alltags, $unusedtags);
 492          $alltags = array_unique($alltags);
 493  
 494          // Create tags.
 495          foreach ($alltags as $tagname) {
 496              $tagrecord = [
 497                  'isstandard' => 1,
 498                  'flag' => 0,
 499                  'rawname' => $tagname,
 500                  'description' => $tagname . ' desc'
 501              ];
 502              $tagobjects[$tagname] = $this->getDataGenerator()->create_tag($tagrecord);
 503          }
 504  
 505          // Create a quiz.
 506          $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');
 507          $quiz = $quizgenerator->create_instance(['course' => $SITE->id, 'questionsperpage' => 3, 'grade' => 100.0]);
 508  
 509          // Create a question category in the system context.
 510          $questiongenerator = $this->getDataGenerator()->get_plugin_generator('core_question');
 511          $cat = $questiongenerator->create_question_category();
 512  
 513          // Setup standard questions.
 514          for ($i = 0; $i < $qnum; $i++) {
 515              $question = $questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
 516              quiz_add_quiz_question($question->id, $quiz);
 517          }
 518          // Setup random questions.
 519          for ($i = 0; $i < $randomqnum; $i++) {
 520              // Just create a standard question first, so there would be enough questions to pick a random question from.
 521              $question = $questiongenerator->create_question('shortanswer', null, ['category' => $cat->id]);
 522              $tagids = [];
 523              if (!empty($questiontags[$i])) {
 524                  foreach ($questiontags[$i] as $tagname) {
 525                      $tagids[] = $tagobjects[$tagname]->id;
 526                  }
 527              }
 528              $this->add_random_questions($quiz->id, 0, $cat->id, 1);
 529          }
 530  
 531          return [$quiz, $tagobjects];
 532      }
 533  
 534      public function test_quiz_override_summary() {
 535          global $DB, $PAGE;
 536          $this->resetAfterTest();
 537          $generator = $this->getDataGenerator();
 538          /** @var mod_quiz_generator $quizgenerator */
 539          $quizgenerator = $generator->get_plugin_generator('mod_quiz');
 540          /** @var renderer $renderer */
 541          $renderer = $PAGE->get_renderer('mod_quiz');
 542  
 543          // Course with quiz and a group - plus some others, to verify they don't get counted.
 544          $course = $generator->create_course();
 545          $quiz = $quizgenerator->create_instance(['course' => $course->id, 'groupmode' => SEPARATEGROUPS]);
 546          $cm = get_coursemodule_from_id('quiz', $quiz->cmid, $course->id);
 547          $group = $generator->create_group(['courseid' => $course->id]);
 548          $othergroup = $generator->create_group(['courseid' => $course->id]);
 549          $otherquiz = $quizgenerator->create_instance(['course' => $course->id]);
 550  
 551          // Initial test (as admin) with no data.
 552          $this->setAdminUser();
 553          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'allgroups'],
 554                  quiz_override_summary($quiz, $cm));
 555          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'onegroup'],
 556                  quiz_override_summary($quiz, $cm, $group->id));
 557  
 558          // Editing teacher.
 559          $teacher = $generator->create_user();
 560          $generator->enrol_user($teacher->id, $course->id, 'editingteacher');
 561  
 562          // Non-editing teacher.
 563          $tutor = $generator->create_user();
 564          $generator->enrol_user($tutor->id, $course->id, 'teacher');
 565          $generator->create_group_member(['userid' => $tutor->id, 'groupid' => $group->id]);
 566  
 567          // Three students.
 568          $student1 = $generator->create_user();
 569          $generator->enrol_user($student1->id, $course->id, 'student');
 570          $generator->create_group_member(['userid' => $student1->id, 'groupid' => $group->id]);
 571  
 572          $student2 = $generator->create_user();
 573          $generator->enrol_user($student2->id, $course->id, 'student');
 574          $generator->create_group_member(['userid' => $student2->id, 'groupid' => $othergroup->id]);
 575  
 576          $student3 = $generator->create_user();
 577          $generator->enrol_user($student3->id, $course->id, 'student');
 578  
 579          // Initial test now users exist, but before overrides.
 580          // Test as teacher.
 581          $this->setUser($teacher);
 582          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'allgroups'],
 583                  quiz_override_summary($quiz, $cm));
 584          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'onegroup'],
 585                  quiz_override_summary($quiz, $cm, $group->id));
 586  
 587          // Test as tutor.
 588          $this->setUser($tutor);
 589          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'somegroups'],
 590                  quiz_override_summary($quiz, $cm));
 591          $this->assertEquals(['group' => 0, 'user' => 0, 'mode' => 'onegroup'],
 592                  quiz_override_summary($quiz, $cm, $group->id));
 593          $this->assertEquals('', $renderer->quiz_override_summary_links($quiz, $cm));
 594  
 595          // Quiz setting overrides for students 1 and 3.
 596          $quizgenerator->create_override(['quiz' => $quiz->id, 'userid' => $student1->id, 'attempts' => 2]);
 597          $quizgenerator->create_override(['quiz' => $quiz->id, 'userid' => $student3->id, 'attempts' => 2]);
 598          $quizgenerator->create_override(['quiz' => $quiz->id, 'groupid' => $group->id, 'attempts' => 3]);
 599          $quizgenerator->create_override(['quiz' => $quiz->id, 'groupid' => $othergroup->id, 'attempts' => 3]);
 600          $quizgenerator->create_override(['quiz' => $otherquiz->id, 'userid' => $student2->id, 'attempts' => 2]);
 601  
 602          // Test as teacher.
 603          $this->setUser($teacher);
 604          $this->assertEquals(['group' => 2, 'user' => 2, 'mode' => 'allgroups'],
 605                  quiz_override_summary($quiz, $cm));
 606          $this->assertEquals('Settings overrides exist (Groups: 2, Users: 2)',
 607                  // Links checked by Behat, so strip them for these tests.
 608                  html_to_text($renderer->quiz_override_summary_links($quiz, $cm), 0, false));
 609          $this->assertEquals(['group' => 1, 'user' => 1, 'mode' => 'onegroup'],
 610                  quiz_override_summary($quiz, $cm, $group->id));
 611          $this->assertEquals('Settings overrides exist (Groups: 1, Users: 1) for this group',
 612                  html_to_text($renderer->quiz_override_summary_links($quiz, $cm, $group->id), 0, false));
 613  
 614          // Test as tutor.
 615          $this->setUser($tutor);
 616          $this->assertEquals(['group' => 1, 'user' => 1, 'mode' => 'somegroups'],
 617                  quiz_override_summary($quiz, $cm));
 618          $this->assertEquals('Settings overrides exist (Groups: 1, Users: 1) for your groups',
 619                  html_to_text($renderer->quiz_override_summary_links($quiz, $cm), 0, false));
 620          $this->assertEquals(['group' => 1, 'user' => 1, 'mode' => 'onegroup'],
 621                  quiz_override_summary($quiz, $cm, $group->id));
 622          $this->assertEquals('Settings overrides exist (Groups: 1, Users: 1) for this group',
 623                  html_to_text($renderer->quiz_override_summary_links($quiz, $cm, $group->id), 0, false));
 624  
 625          // Now set the quiz to be group mode: no groups, and re-test as tutor.
 626          // In this case, the tutor should see all groups.
 627          $DB->set_field('course_modules', 'groupmode', NOGROUPS, ['id' => $cm->id]);
 628          $cm = get_coursemodule_from_id('quiz', $quiz->cmid, $course->id);
 629  
 630          $this->assertEquals(['group' => 2, 'user' => 2, 'mode' => 'allgroups'],
 631                  quiz_override_summary($quiz, $cm));
 632          $this->assertEquals('Settings overrides exist (Groups: 2, Users: 2)',
 633                  html_to_text($renderer->quiz_override_summary_links($quiz, $cm), 0, false));
 634      }
 635  
 636      /**
 637       *  Test quiz_send_confirmation function.
 638       */
 639      public function test_quiz_send_confirmation() {
 640          global $CFG, $DB;
 641  
 642          $this->resetAfterTest();
 643          $this->setAdminUser();
 644          $this->preventResetByRollback();
 645  
 646          $course = $this->getDataGenerator()->create_course();
 647          $quizgenerator = $this->getDataGenerator()->get_plugin_generator('mod_quiz');
 648          $quiz = $quizgenerator->create_instance(['course' => $course->id]);
 649          $cm = get_coursemodule_from_instance('quiz', $quiz->id);
 650  
 651          $recipient = $this->getDataGenerator()->create_user(['email' => 'student@example.com']);
 652  
 653          // Allow recipent to receive email confirm submission.
 654          $studentrole = $DB->get_record('role', ['shortname' => 'student']);
 655          assign_capability('mod/quiz:emailconfirmsubmission', CAP_ALLOW, $studentrole->id,
 656              \context_course::instance($course->id), true);
 657          $this->getDataGenerator()->enrol_user($recipient->id, $course->id, $studentrole->id, 'manual');
 658  
 659          $timenow = time();
 660          $data = new \stdClass();
 661          // Course info.
 662          $data->courseid        = $course->id;
 663          $data->coursename      = $course->fullname;
 664          // Quiz info.
 665          $data->quizname        = $quiz->name;
 666          $data->quizurl         = $CFG->wwwroot . '/mod/quiz/view.php?id=' . $cm->id;
 667          $data->quizid          = $quiz->id;
 668          $data->quizcmid        = $quiz->cmid;
 669          $data->attemptid       = 1;
 670          $data->submissiontime = userdate($timenow);
 671  
 672          $sink = $this->redirectEmails();
 673          quiz_send_confirmation($recipient, $data, true);
 674          $messages = $sink->get_messages();
 675          $message = reset($messages);
 676          $this->assertStringContainsString("Thank you for submitting your answers" ,
 677              quoted_printable_decode($message->body));
 678          $sink->close();
 679  
 680          $sink = $this->redirectEmails();
 681          quiz_send_confirmation($recipient, $data, false);
 682          $messages = $sink->get_messages();
 683          $message = reset($messages);
 684          $this->assertStringContainsString("Your answers were submitted automatically" ,
 685              quoted_printable_decode($message->body));
 686          $sink->close();
 687      }
 688  }