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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   * This file contains tests for the question_attempt_iterator class.
  19   *
  20   * @package    moodlecore
  21   * @subpackage questionengine
  22   * @copyright  2009 The Open University
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  global $CFG;
  30  require_once(dirname(__FILE__) . '/../lib.php');
  31  require_once(dirname(__FILE__) . '/helpers.php');
  32  
  33  
  34  /**
  35   * This file contains tests for the {@link question_attempt_iterator} 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 question_attempt_iterator_test extends advanced_testcase {
  41      private $quba;
  42      private $qas = array();
  43      private $iterator;
  44  
  45      protected function setUp() {
  46          $this->quba = question_engine::make_questions_usage_by_activity('unit_test',
  47                  context_system::instance());
  48          $this->quba->set_preferred_behaviour('deferredfeedback');
  49  
  50          $slot = $this->quba->add_question(test_question_maker::make_question('description'));
  51          $this->qas[$slot] = $this->quba->get_question_attempt($slot);
  52  
  53          $slot = $this->quba->add_question(test_question_maker::make_question('description'));
  54          $this->qas[$slot] = $this->quba->get_question_attempt($slot);
  55  
  56          $this->iterator = $this->quba->get_attempt_iterator();
  57      }
  58  
  59      protected function tearDown() {
  60          $this->quba = null;
  61          $this->iterator = null;
  62      }
  63  
  64      public function test_foreach_loop() {
  65          $i = 1;
  66          foreach ($this->iterator as $key => $qa) {
  67              $this->assertEquals($i, $key);
  68              $this->assertSame($this->qas[$i], $qa);
  69              $i++;
  70          }
  71          $this->assertEquals(3, $i);
  72      }
  73  
  74      public function test_offsetExists_before_start() {
  75          $this->assertFalse(isset($this->iterator[0]));
  76      }
  77  
  78      public function test_offsetExists_at_start() {
  79          $this->assertTrue(isset($this->iterator[1]));
  80      }
  81  
  82      public function test_offsetExists_at_endt() {
  83          $this->assertTrue(isset($this->iterator[2]));
  84      }
  85  
  86      public function test_offsetExists_past_end() {
  87          $this->assertFalse(isset($this->iterator[3]));
  88      }
  89  
  90      public function test_offsetGet_before_start() {
  91          $this->setExpectedException('moodle_exception');
  92          $step = $this->iterator[0];
  93      }
  94  
  95      public function test_offsetGet_at_start() {
  96          $this->assertSame($this->qas[1], $this->iterator[1]);
  97      }
  98  
  99      public function test_offsetGet_at_end() {
 100          $this->assertSame($this->qas[2], $this->iterator[2]);
 101      }
 102  
 103      public function test_offsetGet_past_end() {
 104          $this->setExpectedException('moodle_exception');
 105          $step = $this->iterator[3];
 106      }
 107  
 108      public function test_cannot_set() {
 109          $this->setExpectedException('moodle_exception');
 110          $this->iterator[0] = null;
 111      }
 112  
 113      public function test_cannot_unset() {
 114          $this->setExpectedException('moodle_exception');
 115          unset($this->iterator[2]);
 116      }
 117  }