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   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 mulitple choice question definition class.
  19   *
  20   * @package    qtype_multichoice
  21   * @copyright  2013 The Open University
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  global $CFG;
  29  require_once($CFG->dirroot . '/question/engine/tests/helpers.php');
  30  require_once($CFG->dirroot . '/question/type/multichoice/questiontype.php');
  31  require_once($CFG->dirroot . '/question/type/edit_question_form.php');
  32  require_once($CFG->dirroot . '/question/type/multichoice/edit_multichoice_form.php');
  33  
  34  /**
  35   * Unit tests for the multiple choice question definition class.
  36   *
  37   * @copyright  2009 The Open University
  38   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  39   */
  40  class qtype_multichoice_test extends advanced_testcase {
  41      protected $qtype;
  42  
  43      protected function setUp() {
  44          $this->qtype = new qtype_multichoice();
  45      }
  46  
  47      protected function tearDown() {
  48          $this->qtype = null;
  49      }
  50  
  51      public function test_name() {
  52          $this->assertEquals($this->qtype->name(), 'multichoice');
  53      }
  54  
  55      protected function get_test_question_data() {
  56          $q = new stdClass();
  57          $q->id = 1;
  58          $q->options = new stdClass();
  59          $q->options->single = true;
  60          $q->options->answers[1] = (object) array('answer' => 'frog',
  61                  'answerformat' => FORMAT_HTML, 'fraction' => 1);
  62          $q->options->answers[2] = (object) array('answer' => 'toad',
  63                  'answerformat' => FORMAT_HTML, 'fraction' => 0);
  64  
  65          return $q;
  66      }
  67  
  68      public function test_can_analyse_responses() {
  69          $this->assertTrue($this->qtype->can_analyse_responses());
  70      }
  71  
  72      public function test_get_random_guess_score() {
  73          $q = $this->get_test_question_data();
  74          $this->assertEquals(0.5, $this->qtype->get_random_guess_score($q));
  75      }
  76  
  77      public function test_get_random_guess_score_multi() {
  78          $q = $this->get_test_question_data();
  79          $q->options->single = false;
  80          $this->assertNull($this->qtype->get_random_guess_score($q));
  81      }
  82  
  83      public function test_get_possible_responses_single() {
  84          $q = $this->get_test_question_data();
  85          $responses = $this->qtype->get_possible_responses($q);
  86  
  87          $this->assertEquals(array(
  88              $q->id => array(
  89                  1 => new question_possible_response('frog', 1),
  90                  2 => new question_possible_response('toad', 0),
  91                  null => question_possible_response::no_response(),
  92              )), $this->qtype->get_possible_responses($q));
  93      }
  94  
  95      public function test_get_possible_responses_multi() {
  96          $q = $this->get_test_question_data();
  97          $q->options->single = false;
  98  
  99          $this->assertEquals(array(
 100              1 => array(1 => new question_possible_response('frog', 1)),
 101              2 => array(2 => new question_possible_response('toad', 0)),
 102          ), $this->qtype->get_possible_responses($q));
 103      }
 104  
 105      public function get_question_saving_which() {
 106          return array(array('two_of_four'), array('one_of_four'));
 107      }
 108  
 109      /**
 110       * @dataProvider get_question_saving_which
 111       */
 112      public function test_question_saving_two_of_four($which) {
 113          $this->resetAfterTest(true);
 114          $this->setAdminUser();
 115  
 116          $questiondata = test_question_maker::get_question_data('multichoice', $which);
 117          $formdata = test_question_maker::get_question_form_data('multichoice', $which);
 118  
 119          $generator = $this->getDataGenerator()->get_plugin_generator('core_question');
 120          $cat = $generator->create_question_category(array());
 121  
 122          $formdata->category = "{$cat->id},{$cat->contextid}";
 123          qtype_multichoice_edit_form::mock_submit((array)$formdata);
 124  
 125          $form = qtype_multichoice_test_helper::get_question_editing_form($cat, $questiondata);
 126  
 127          $this->assertTrue($form->is_validated());
 128  
 129          $fromform = $form->get_data();
 130  
 131          $returnedfromsave = $this->qtype->save_question($questiondata, $fromform);
 132          $actualquestionsdata = question_load_questions(array($returnedfromsave->id));
 133          $actualquestiondata = end($actualquestionsdata);
 134  
 135          foreach ($questiondata as $property => $value) {
 136              if (!in_array($property, array('id', 'version', 'timemodified', 'timecreated', 'options', 'hints', 'stamp'))) {
 137                  $this->assertAttributeEquals($value, $property, $actualquestiondata);
 138              }
 139          }
 140  
 141          foreach ($questiondata->options as $optionname => $value) {
 142              if ($optionname != 'answers') {
 143                  $this->assertAttributeEquals($value, $optionname, $actualquestiondata->options);
 144              }
 145          }
 146  
 147          foreach ($questiondata->hints as $hint) {
 148              $actualhint = array_shift($actualquestiondata->hints);
 149              foreach ($hint as $property => $value) {
 150                  if (!in_array($property, array('id', 'questionid', 'options'))) {
 151                      $this->assertAttributeEquals($value, $property, $actualhint);
 152                  }
 153              }
 154          }
 155  
 156          foreach ($questiondata->options->answers as $answer) {
 157              $actualanswer = array_shift($actualquestiondata->options->answers);
 158              foreach ($answer as $ansproperty => $ansvalue) {
 159                  // This question does not use 'answerformat', will ignore it.
 160                  if (!in_array($ansproperty, array('id', 'question', 'answerformat'))) {
 161                      $this->assertAttributeEquals($ansvalue, $ansproperty, $actualanswer);
 162                  }
 163              }
 164          }
 165      }
 166  }