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Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403] [Versions 39 and 310]

   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_step_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 (__DIR__ . '/../lib.php');
  31  require_once (__DIR__ . '/helpers.php');
  32  
  33  
  34  /**
  35   * Unit tests for the {@link question_attempt_step_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_step_iterator_test extends advanced_testcase {
  41      private $qa;
  42      private $iterator;
  43  
  44      protected function setUp(): void {
  45          $question = test_question_maker::make_question('description');
  46          $this->qa = new testable_question_attempt($question, 0);
  47          for ($i = 0; $i < 3; $i++) {
  48              $step = new question_attempt_step(array('i' => $i));
  49              $this->qa->add_step($step);
  50          }
  51          $this->iterator = $this->qa->get_step_iterator();
  52      }
  53  
  54      protected function tearDown(): void {
  55          $this->qa = null;
  56          $this->iterator = null;
  57      }
  58  
  59      public function test_foreach_loop() {
  60          $i = 0;
  61          foreach ($this->iterator as $key => $step) {
  62              $this->assertEquals($i, $key);
  63              $this->assertEquals($i, $step->get_qt_var('i'));
  64              $i++;
  65          }
  66      }
  67  
  68      public function test_foreach_loop_add_step_during() {
  69          $i = 0;
  70          foreach ($this->iterator as $key => $step) {
  71              $this->assertEquals($i, $key);
  72              $this->assertEquals($i, $step->get_qt_var('i'));
  73              $i++;
  74              if ($i == 2) {
  75                  $step = new question_attempt_step(array('i' => 3));
  76                  $this->qa->add_step($step);
  77              }
  78          }
  79          $this->assertEquals(4, $i);
  80      }
  81  
  82      public function test_reverse_foreach_loop() {
  83          $i = 2;
  84          foreach ($this->qa->get_reverse_step_iterator() as $key => $step) {
  85              $this->assertEquals($i, $key);
  86              $this->assertEquals($i, $step->get_qt_var('i'));
  87              $i--;
  88          }
  89      }
  90  
  91      public function test_offsetExists_before_start() {
  92          $this->assertFalse(isset($this->iterator[-1]));
  93      }
  94  
  95      public function test_offsetExists_at_start() {
  96          $this->assertTrue(isset($this->iterator[0]));
  97      }
  98  
  99      public function test_offsetExists_at_endt() {
 100          $this->assertTrue(isset($this->iterator[2]));
 101      }
 102  
 103      public function test_offsetExists_past_end() {
 104          $this->assertFalse(isset($this->iterator[3]));
 105      }
 106  
 107      public function test_offsetGet_before_start() {
 108          $this->expectException(moodle_exception::class);
 109          $step = $this->iterator[-1];
 110      }
 111  
 112      public function test_offsetGet_at_start() {
 113          $step = $this->iterator[0];
 114          $this->assertEquals(0, $step->get_qt_var('i'));
 115      }
 116  
 117      public function test_offsetGet_at_end() {
 118          $step = $this->iterator[2];
 119          $this->assertEquals(2, $step->get_qt_var('i'));
 120      }
 121  
 122      public function test_offsetGet_past_end() {
 123          $this->expectException(moodle_exception::class);
 124          $step = $this->iterator[3];
 125      }
 126  
 127      public function test_cannot_set() {
 128          $this->expectException(moodle_exception::class);
 129          $this->iterator[0] = null;
 130      }
 131  
 132      public function test_cannot_unset() {
 133          $this->expectException(moodle_exception::class);
 134          unset($this->iterator[2]);
 135      }
 136  }