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Differences Between: [Versions 310 and 402] [Versions 39 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 core_question;
  18  
  19  use question_attempt_step;
  20  use testable_question_attempt;
  21  
  22  defined('MOODLE_INTERNAL') || die();
  23  
  24  global $CFG;
  25  require_once (__DIR__ . '/../lib.php');
  26  require_once (__DIR__ . '/helpers.php');
  27  
  28  /**
  29   * Unit tests for the {@link question_attempt_step_iterator} class.
  30   *
  31   * @package    core_question
  32   * @category   test
  33   * @copyright  2009 The Open University
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class questionattemptstepiterator_test extends \advanced_testcase {
  37      private $qa;
  38      private $iterator;
  39  
  40      protected function setUp(): void {
  41          $question = \test_question_maker::make_question('description');
  42          $this->qa = new testable_question_attempt($question, 0);
  43          for ($i = 0; $i < 3; $i++) {
  44              $step = new question_attempt_step(array('i' => $i));
  45              $this->qa->add_step($step);
  46          }
  47          $this->iterator = $this->qa->get_step_iterator();
  48      }
  49  
  50      protected function tearDown(): void {
  51          $this->qa = null;
  52          $this->iterator = null;
  53      }
  54  
  55      public function test_foreach_loop() {
  56          $i = 0;
  57          foreach ($this->iterator as $key => $step) {
  58              $this->assertEquals($i, $key);
  59              $this->assertEquals($i, $step->get_qt_var('i'));
  60              $i++;
  61          }
  62      }
  63  
  64      public function test_foreach_loop_add_step_during() {
  65          $i = 0;
  66          foreach ($this->iterator as $key => $step) {
  67              $this->assertEquals($i, $key);
  68              $this->assertEquals($i, $step->get_qt_var('i'));
  69              $i++;
  70              if ($i == 2) {
  71                  $step = new question_attempt_step(array('i' => 3));
  72                  $this->qa->add_step($step);
  73              }
  74          }
  75          $this->assertEquals(4, $i);
  76      }
  77  
  78      public function test_reverse_foreach_loop() {
  79          $i = 2;
  80          foreach ($this->qa->get_reverse_step_iterator() as $key => $step) {
  81              $this->assertEquals($i, $key);
  82              $this->assertEquals($i, $step->get_qt_var('i'));
  83              $i--;
  84          }
  85      }
  86  
  87      public function test_offsetExists_before_start() {
  88          $this->assertFalse(isset($this->iterator[-1]));
  89      }
  90  
  91      public function test_offsetExists_at_start() {
  92          $this->assertTrue(isset($this->iterator[0]));
  93      }
  94  
  95      public function test_offsetExists_at_endt() {
  96          $this->assertTrue(isset($this->iterator[2]));
  97      }
  98  
  99      public function test_offsetExists_past_end() {
 100          $this->assertFalse(isset($this->iterator[3]));
 101      }
 102  
 103      public function test_offsetGet_before_start() {
 104          $this->expectException(\moodle_exception::class);
 105          $step = $this->iterator[-1];
 106      }
 107  
 108      public function test_offsetGet_at_start() {
 109          $step = $this->iterator[0];
 110          $this->assertEquals(0, $step->get_qt_var('i'));
 111      }
 112  
 113      public function test_offsetGet_at_end() {
 114          $step = $this->iterator[2];
 115          $this->assertEquals(2, $step->get_qt_var('i'));
 116      }
 117  
 118      public function test_offsetGet_past_end() {
 119          $this->expectException(\moodle_exception::class);
 120          $step = $this->iterator[3];
 121      }
 122  
 123      public function test_cannot_set() {
 124          $this->expectException(\moodle_exception::class);
 125          $this->iterator[0] = null;
 126      }
 127  
 128      public function test_cannot_unset() {
 129          $this->expectException(\moodle_exception::class);
 130          unset($this->iterator[2]);
 131      }
 132  }