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Differences Between: [Versions 311 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  namespace qtype_multianswer;
  18  
  19  use qtype_multianswer;
  20  use qtype_multianswer_edit_form;
  21  use qtype_multichoice_base;
  22  use question_bank;
  23  use test_question_maker;
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  global $CFG;
  28  require_once($CFG->dirroot . '/question/engine/tests/helpers.php');
  29  require_once($CFG->dirroot . '/question/type/multianswer/questiontype.php');
  30  require_once($CFG->dirroot . '/question/type/edit_question_form.php');
  31  require_once($CFG->dirroot . '/question/type/multianswer/edit_multianswer_form.php');
  32  
  33  
  34  /**
  35   * Unit tests for the multianswer question definition class.
  36   *
  37   * @package   qtype_multianswer
  38   * @copyright 2011 The Open University
  39   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  40   * @covers    \qtype_multianswer
  41   */
  42  class question_type_test extends \advanced_testcase {
  43      /** @var qtype_multianswer instance of the question type class to test. */
  44      protected $qtype;
  45  
  46      protected function setUp(): void {
  47          $this->qtype = new qtype_multianswer();
  48      }
  49  
  50      protected function tearDown(): void {
  51          $this->qtype = null;
  52      }
  53  
  54      protected function get_test_question_data() {
  55          global $USER;
  56          $q = new \stdClass();
  57          $q->id = 0;
  58          $q->name = 'Simple multianswer';
  59          $q->category = 0;
  60          $q->contextid = 0;
  61          $q->parent = 0;
  62          $q->questiontext =
  63                  'Complete this opening line of verse: "The {#1} and the {#2} went to sea".';
  64          $q->questiontextformat = FORMAT_HTML;
  65          $q->generalfeedback = 'Generalfeedback: It\'s from "The Owl and the Pussy-cat" by Lear: ' .
  66                  '"The owl and the pussycat went to see';
  67          $q->generalfeedbackformat = FORMAT_HTML;
  68          $q->defaultmark = 2;
  69          $q->penalty = 0.3333333;
  70          $q->status = \core_question\local\bank\question_version_status::QUESTION_STATUS_READY;
  71          $q->versionid = 0;
  72          $q->version = 1;
  73          $q->questionbankentryid = 0;
  74          $q->length = 1;
  75          $q->stamp = make_unique_id_code();
  76          $q->timecreated = time();
  77          $q->timemodified = time();
  78          $q->createdby = $USER->id;
  79          $q->modifiedby = $USER->id;
  80  
  81          $sadata = new \stdClass();
  82          $sadata->id = 1;
  83          $sadata->qtype = 'shortanswer';
  84          $sadata->defaultmark = 1;
  85          $sadata->options->usecase = true;
  86          $sadata->options->answers[1] = (object) array('answer' => 'Bow-wow', 'fraction' => 0);
  87          $sadata->options->answers[2] = (object) array('answer' => 'Wiggly worm', 'fraction' => 0);
  88          $sadata->options->answers[3] = (object) array('answer' => 'Pussy-cat', 'fraction' => 1);
  89  
  90          $mcdata = new \stdClass();
  91          $mcdata->id = 1;
  92          $mcdata->qtype = 'multichoice';
  93          $mcdata->defaultmark = 1;
  94          $mcdata->options->single = true;
  95          $mcdata->options->answers[1] = (object) array('answer' => 'Dog', 'fraction' => 0);
  96          $mcdata->options->answers[2] = (object) array('answer' => 'Owl', 'fraction' => 1);
  97          $mcdata->options->answers[3] = (object) array('answer' => '*', 'fraction' => 0);
  98  
  99          $q->options->questions = array(
 100              1 => $sadata,
 101              2 => $mcdata,
 102          );
 103  
 104          return $q;
 105      }
 106  
 107      public function test_name() {
 108          $this->assertEquals($this->qtype->name(), 'multianswer');
 109      }
 110  
 111      public function test_can_analyse_responses() {
 112          $this->assertFalse($this->qtype->can_analyse_responses());
 113      }
 114  
 115      public function test_get_random_guess_score() {
 116          $q = test_question_maker::get_question_data('multianswer', 'twosubq');
 117          $this->assertEqualsWithDelta(0.1666667, $this->qtype->get_random_guess_score($q), 0.0000001);
 118      }
 119  
 120      public function test_get_random_guess_score_with_missing_subquestion() {
 121          global $DB;
 122          $this->resetAfterTest();
 123  
 124          // Create a question referring to a subquesion that has got lost (which happens some time).
 125          /** @var \core_question_generator $generator */
 126          $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
 127          $category = $generator->create_question_category();
 128          $question = $generator->create_question('multianswer', 'twosubq', ['category' => $category->id]);
 129          // Add a non-existent subquestion id to the list.
 130          $sequence = $DB->get_field('question_multianswer', 'sequence', ['question' => $question->id], MUST_EXIST);
 131          $DB->set_field('question_multianswer', 'sequence', $sequence . ',-1', ['question' => $question->id]);
 132  
 133          // Verify that computing the random guess score does not give an error.
 134          $questiondata = question_bank::load_question_data($question->id);
 135          $this->assertEqualsWithDelta(0.1666667, $this->qtype->get_random_guess_score($questiondata), 0.0000001);
 136      }
 137  
 138      public function test_get_random_guess_score_with_all_missing_subquestions() {
 139          $this->resetAfterTest();
 140  
 141          // Create a question where all subquestions are missing.
 142          $questiondata = test_question_maker::get_question_data('multianswer', 'twosubq');
 143          foreach ($questiondata->options->questions as $subq) {
 144              $subq->qtype = 'subquestion_replacement';
 145          }
 146  
 147          // Verify that computing the random guess score does not give an error.
 148          $this->assertNull($this->qtype->get_random_guess_score($questiondata));
 149      }
 150  
 151      public function test_load_question() {
 152          $this->resetAfterTest();
 153  
 154          $syscontext = \context_system::instance();
 155          /** @var \core_question_generator $generator */
 156          $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
 157          $category = $generator->create_question_category(['contextid' => $syscontext->id]);
 158  
 159          $fromform = \test_question_maker::get_question_form_data('multianswer');
 160          $fromform->category = $category->id . ',' . $syscontext->id;
 161  
 162          $question = new \stdClass();
 163          $question->category = $category->id;
 164          $question->qtype = 'multianswer';
 165          $question->createdby = 0;
 166  
 167          // Note, $question gets modified during save because of the way subquestions
 168          // are extracted.
 169          $question = $this->qtype->save_question($question, $fromform);
 170  
 171          $questiondata = question_bank::load_question_data($question->id);
 172  
 173          $this->assertEquals(['id', 'category', 'parent', 'name', 'questiontext', 'questiontextformat',
 174                  'generalfeedback', 'generalfeedbackformat', 'defaultmark', 'penalty', 'qtype',
 175                  'length', 'stamp', 'timecreated', 'timemodified', 'createdby', 'modifiedby', 'idnumber', 'contextid',
 176                  'status', 'versionid', 'version', 'questionbankentryid', 'categoryobject', 'options', 'hints'],
 177                  array_keys(get_object_vars($questiondata)));
 178          $this->assertEquals($category->id, $questiondata->category);
 179          $this->assertEquals(0, $questiondata->parent);
 180          $this->assertEquals($fromform->name, $questiondata->name);
 181          $this->assertEquals($fromform->questiontext, $questiondata->questiontext);
 182          $this->assertEquals($fromform->questiontextformat, $questiondata->questiontextformat);
 183          $this->assertEquals($fromform->generalfeedback['text'], $questiondata->generalfeedback);
 184          $this->assertEquals($fromform->generalfeedback['format'], $questiondata->generalfeedbackformat);
 185          $this->assertEquals($fromform->defaultmark, $questiondata->defaultmark);
 186          $this->assertEquals(0, $questiondata->penalty);
 187          $this->assertEquals('multianswer', $questiondata->qtype);
 188          $this->assertEquals(1, $questiondata->length);
 189          $this->assertEquals(\core_question\local\bank\question_version_status::QUESTION_STATUS_READY, $questiondata->status);
 190          $this->assertEquals($question->createdby, $questiondata->createdby);
 191          $this->assertEquals($question->createdby, $questiondata->modifiedby);
 192          $this->assertEquals('', $questiondata->idnumber);
 193          $this->assertEquals($syscontext->id, $questiondata->contextid);
 194  
 195          // Build the expected hint base.
 196          $hintbase = [
 197              'questionid' => $questiondata->id,
 198              'shownumcorrect' => 0,
 199              'clearwrong' => 0,
 200              'options' => null];
 201          $expectedhints = [];
 202          foreach ($fromform->hint as $key => $value) {
 203              $hint = $hintbase + [
 204                  'hint' => $value['text'],
 205                  'hintformat' => $value['format'],
 206              ];
 207              $expectedhints[] = (object)$hint;
 208          }
 209          // Need to get rid of ids.
 210          $gothints = array_map(function($hint) {
 211              unset($hint->id);
 212              return $hint;
 213          }, $questiondata->hints);
 214          // Compare hints.
 215          $this->assertEquals($expectedhints, array_values($gothints));
 216  
 217          // Options.
 218          $this->assertEquals(['answers', 'questions'], array_keys(get_object_vars($questiondata->options)));
 219          $this->assertEquals(count($fromform->options->questions), count($questiondata->options->questions));
 220  
 221          // Option answers.
 222          $this->assertEquals([], $questiondata->options->answers);
 223  
 224          // Build the expected questions. We aren't going deeper to subquestion answers, options... that's another qtype job.
 225          $expectedquestions = [];
 226          foreach ($fromform->options->questions as $key => $value) {
 227              $question = [
 228                  'id' => $value->id,
 229                  'category' => $category->id,
 230                  'parent' => $questiondata->id,
 231                  'name' => $value->name,
 232                  'questiontext' => $value->questiontext,
 233                  'questiontextformat' => $value->questiontextformat,
 234                  'generalfeedback' => $value->generalfeedback,
 235                  'generalfeedbackformat' => $value->generalfeedbackformat,
 236                  'defaultmark' => (float) $value->defaultmark,
 237                  'penalty' => (float)$value->penalty,
 238                  'qtype' => $value->qtype,
 239                  'length' => $value->length,
 240                  'stamp' => $value->stamp,
 241                  'timecreated' => $value->timecreated,
 242                  'timemodified' => $value->timemodified,
 243                  'createdby' => $value->createdby,
 244                  'modifiedby' => $value->modifiedby,
 245              ];
 246              $expectedquestions[] = (object)$question;
 247          }
 248          // Need to get rid of (version, idnumber, options, hints, maxmark). They are missing @ fromform.
 249          $gotquestions = array_map(function($question) {
 250                  $question->id = (int) $question->id;
 251                  $question->category = (int) $question->category;
 252                  $question->defaultmark = (float) $question->defaultmark;
 253                  $question->penalty = (float) $question->penalty;
 254                  $question->length = (int) $question->length;
 255                  $question->timecreated = (int) $question->timecreated;
 256                  $question->timemodified = (int) $question->timemodified;
 257                  $question->createdby = (int) $question->createdby;
 258                  $question->modifiedby = (int) $question->modifiedby;
 259                  unset($question->idnumber);
 260                  unset($question->options);
 261                  unset($question->hints);
 262                  unset($question->maxmark);
 263                  return $question;
 264          }, $questiondata->options->questions);
 265          // Compare questions.
 266          $this->assertEquals($expectedquestions, array_values($gotquestions));
 267      }
 268  
 269      public function test_question_saving_twosubq() {
 270          $this->resetAfterTest(true);
 271          $this->setAdminUser();
 272  
 273          $questiondata = \test_question_maker::get_question_data('multianswer');
 274  
 275          $formdata = \test_question_maker::get_question_form_data('multianswer');
 276  
 277          $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
 278          $cat = $generator->create_question_category(array());
 279  
 280          $formdata->category = "{$cat->id},{$cat->contextid}";
 281          qtype_multianswer_edit_form::mock_submit((array)$formdata);
 282  
 283          $form = \qtype_multianswer_test_helper::get_question_editing_form($cat, $questiondata);
 284  
 285          $this->assertTrue($form->is_validated());
 286  
 287          $fromform = $form->get_data();
 288          // Create a new question version with the form submission.
 289          unset($questiondata->id);
 290          $returnedfromsave = $this->qtype->save_question($questiondata, $fromform);
 291          $actualquestionsdata = question_load_questions(array($returnedfromsave->id));
 292          $actualquestiondata = end($actualquestionsdata);
 293  
 294          foreach ($questiondata as $property => $value) {
 295              if (!in_array($property, ['id', 'timemodified', 'timecreated', 'options', 'hints', 'stamp',
 296                  'idnumber', 'version', 'versionid', 'questionbankentryid', 'contextid', 'category', 'status'])) {
 297                  $this->assertEquals($value, $actualquestiondata->$property);
 298              }
 299          }
 300  
 301          foreach ($questiondata->options as $optionname => $value) {
 302              if ($optionname != 'questions') {
 303                  $this->assertEquals($value, $actualquestiondata->options->$optionname);
 304              }
 305          }
 306  
 307          foreach ($questiondata->hints as $hint) {
 308              $actualhint = array_shift($actualquestiondata->hints);
 309              foreach ($hint as $property => $value) {
 310                  if (!in_array($property, array('id', 'questionid', 'options'))) {
 311                      $this->assertEquals($value, $actualhint->$property);
 312                  }
 313              }
 314          }
 315  
 316          $this->assertObjectHasAttribute('questions', $actualquestiondata->options);
 317  
 318          $subqpropstoignore =
 319              ['id', 'category', 'parent', 'contextid', 'question', 'options', 'stamp', 'timemodified',
 320                  'timecreated', 'status', 'idnumber', 'version', 'versionid', 'questionbankentryid'];
 321          foreach ($questiondata->options->questions as $subqno => $subq) {
 322              $actualsubq = $actualquestiondata->options->questions[$subqno];
 323              foreach ($subq as $subqproperty => $subqvalue) {
 324                  if (!in_array($subqproperty, $subqpropstoignore)) {
 325                      $this->assertEquals($subqvalue, $actualsubq->$subqproperty);
 326                  }
 327              }
 328              foreach ($subq->options as $optionname => $value) {
 329                  if (!in_array($optionname, array('answers'))) {
 330                      $this->assertEquals($value, $actualsubq->options->$optionname);
 331                  }
 332              }
 333              foreach ($subq->options->answers as $answer) {
 334                  $actualanswer = array_shift($actualsubq->options->answers);
 335                  foreach ($answer as $ansproperty => $ansvalue) {
 336                      // These questions do not use 'answerformat', will ignore it.
 337                      if (!in_array($ansproperty, array('id', 'question', 'answerformat'))) {
 338                          $this->assertEquals($ansvalue, $actualanswer->$ansproperty);
 339                      }
 340                  }
 341              }
 342          }
 343      }
 344  
 345      /**
 346       *  Verify that the multiplechoice variants parameters are correctly interpreted from
 347       *  the question text
 348       */
 349      public function test_questiontext_extraction_of_multiplechoice_subquestions_variants() {
 350          $questiontext = array();
 351          $questiontext['format'] = FORMAT_HTML;
 352          $questiontext['itemid'] = '';
 353          $questiontext['text'] = '<p>Match the following cities with the correct state:</p>
 354              <ul>
 355              <li>1 San Francisco:{1:MULTICHOICE:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 356              <li>2 Tucson:{1:MC:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 357              <li>3 Los Angeles:{1:MULTICHOICE_S:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 358              <li>4 Phoenix:{1:MCS:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 359              <li>5 San Francisco:{1:MULTICHOICE_H:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 360              <li>6 Tucson:{1:MCH:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 361              <li>7 Los Angeles:{1:MULTICHOICE_HS:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 362              <li>8 Phoenix:{1:MCHS:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 363              <li>9 San Francisco:{1:MULTICHOICE_V:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 364              <li>10 Tucson:{1:MCV:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 365              <li>11 Los Angeles:{1:MULTICHOICE_VS:=California#OK~%33.33333%Ohio#Not really~Arizona#Wrong}</li>
 366              <li>12 Phoenix:{1:MCVS:%0%California#Wrong~%33,33333%Ohio#Not really~=Arizona#OK}</li>
 367              </ul>';
 368  
 369          $q = qtype_multianswer_extract_question($questiontext);
 370          foreach ($q->options->questions as $key => $sub) {
 371              $this->assertSame($sub->qtype, 'multichoice');
 372              if ($key == 1 || $key == 2 || $key == 5 || $key == 6 || $key == 9 || $key == 10) {
 373                  $this->assertSame($sub->shuffleanswers, 0);
 374              } else {
 375                  $this->assertSame($sub->shuffleanswers, 1);
 376              }
 377              if ($key == 1 || $key == 2 || $key == 3 || $key == 4) {
 378                  $this->assertSame($sub->layout, qtype_multichoice_base::LAYOUT_DROPDOWN);
 379              } else if ($key == 5 || $key == 6 || $key == 7 || $key == 8) {
 380                  $this->assertSame($sub->layout, qtype_multichoice_base::LAYOUT_HORIZONTAL);
 381              } else if ($key == 9 || $key == 10 || $key == 11 || $key == 12) {
 382                  $this->assertSame($sub->layout, qtype_multichoice_base::LAYOUT_VERTICAL);
 383              }
 384              foreach ($sub->feedback as $key => $feedback) {
 385                  if ($feedback['text'] === 'OK') {
 386                      $this->assertEquals(1, $sub->fraction[$key]);
 387                  } else if ($feedback['text'] === 'Wrong') {
 388                      $this->assertEquals(0, $sub->fraction[$key]);
 389                  } else {
 390                      $this->assertEquals('Not really', $feedback['text']);
 391                      $this->assertEquals(0.3333333, $sub->fraction[$key]);
 392                  }
 393              }
 394          }
 395      }
 396  
 397      /**
 398       * Test get_question_options.
 399       *
 400       * @covers \qtype_multianswer::get_question_options
 401       */
 402      public function test_get_question_options() {
 403          global $DB;
 404  
 405          $this->resetAfterTest(true);
 406  
 407          $syscontext = \context_system::instance();
 408          $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
 409          $category = $generator->create_question_category(['contextid' => $syscontext->id]);
 410  
 411          $fromform = test_question_maker::get_question_form_data('multianswer', 'twosubq');
 412          $fromform->category = $category->id . ',' . $syscontext->id;
 413  
 414          $question = new \stdClass();
 415          $question->category = $category->id;
 416          $question->qtype = 'multianswer';
 417          $question->createdby = 0;
 418  
 419          $question = $this->qtype->save_question($question, $fromform);
 420          $questiondata = question_bank::load_question_data($question->id);
 421  
 422          $questiontodeletekey = array_keys($questiondata->options->questions)[0];
 423          $questiontodelete = $questiondata->options->questions[$questiontodeletekey];
 424  
 425          $this->assertCount(2, $questiondata->options->questions);
 426          $this->assertEquals('shortanswer', $questiondata->options->questions[$questiontodeletekey]->qtype);
 427  
 428          // Forcibly delete a subquestion to ensure get_question_options replaces it.
 429          $DB->delete_records('question', ['id' => $questiontodelete->id]);
 430          $this->qtype->get_question_options($questiondata);
 431  
 432          $this->assertCount(2, $questiondata->options->questions);
 433          $this->assertEquals('subquestion_replacement', $questiondata->options->questions[$questiontodeletekey]->qtype);
 434      }
 435  }