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See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

< /** < * Tests for the {@link core_question\engine\variants\least_used_strategy} class. < * < * @package core_question < * @copyright 2015 The Open University < * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later < */
> namespace core_question; > > use core_question\engine\variants\least_used_strategy; > use qubaid_list; > use question_bank; > use question_engine;
defined('MOODLE_INTERNAL') || die(); global $CFG; require_once($CFG->dirroot . '/question/engine/tests/helpers.php');
<
/** * Tests for the {@link core_question\engine\variants\least_used_strategy} class. *
> * @package core_question
* @copyright 2015 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */
< class least_used_variant_strategy_testcase extends advanced_testcase {
> class least_used_variant_strategy_test extends \advanced_testcase {
public function test_question_with_one_variant_always_picks_that() {
< $question = test_question_maker::make_question('shortanswer'); < $quba = question_engine::make_questions_usage_by_activity('test', context_system::instance());
> $question = \test_question_maker::make_question('shortanswer'); > $quba = question_engine::make_questions_usage_by_activity('test', \context_system::instance());
$quba->set_preferred_behaviour('deferredfeedback'); $slot = $quba->add_question($question);
< $quba->start_all_questions(new core_question\engine\variants\least_used_strategy( < $quba, new qubaid_list(array())));
> $quba->start_all_questions(new least_used_strategy( > $quba, new qubaid_list([])));
$this->assertEquals(1, $quba->get_variant($slot)); } public function test_synchronised_question_should_use_the_same_dataset() { // Actually, we cheat here. We use the same question twice, not two different synchronised questions.
< $question = test_question_maker::make_question('calculated'); < $quba = question_engine::make_questions_usage_by_activity('test', context_system::instance());
> $question = \test_question_maker::make_question('calculated'); > $quba = question_engine::make_questions_usage_by_activity('test', \context_system::instance());
$quba->set_preferred_behaviour('deferredfeedback'); $slot1 = $quba->add_question($question); $slot2 = $quba->add_question($question);
< $quba->start_all_questions(new core_question\engine\variants\least_used_strategy( < $quba, new qubaid_list(array())));
> $quba->start_all_questions(new least_used_strategy( > $quba, new qubaid_list([])));
$this->assertEquals($quba->get_variant($slot1), $quba->get_variant($slot2)); } public function test_second_attempt_uses_other_dataset() { global $DB; $this->resetAfterTest(); $generator = $this->getDataGenerator()->get_plugin_generator('core_question'); $cat = $generator->create_question_category();
< $questiondata = $generator->create_question('calculated', null, array('category' => $cat->id));
> $questiondata = $generator->create_question('calculated', null, ['category' => $cat->id]);
// Create two dataset items. $adefinitionid = $DB->get_field_sql(" SELECT qdd.id FROM {question_dataset_definitions} qdd JOIN {question_datasets} qd ON qd.datasetdefinition = qdd.id WHERE qd.question = ?
< AND qdd.name = ?", array($questiondata->id, 'a'));
> AND qdd.name = ?", [$questiondata->id, 'a']);
$bdefinitionid = $DB->get_field_sql(" SELECT qdd.id FROM {question_dataset_definitions} qdd JOIN {question_datasets} qd ON qd.datasetdefinition = qdd.id WHERE qd.question = ?
< AND qdd.name = ?", array($questiondata->id, 'b')); < $DB->set_field('question_dataset_definitions', 'itemcount', 2, array('id' => $adefinitionid)); < $DB->set_field('question_dataset_definitions', 'itemcount', 2, array('id' => $bdefinitionid)); < $DB->insert_record('question_dataset_items', array('definition' => $adefinitionid, < 'itemnumber' => 1, 'value' => 3)); < $DB->insert_record('question_dataset_items', array('definition' => $bdefinitionid, < 'itemnumber' => 1, 'value' => 7)); < $DB->insert_record('question_dataset_items', array('definition' => $adefinitionid, < 'itemnumber' => 2, 'value' => 6)); < $DB->insert_record('question_dataset_items', array('definition' => $bdefinitionid, < 'itemnumber' => 2, 'value' => 4));
> AND qdd.name = ?", [$questiondata->id, 'b']); > $DB->set_field('question_dataset_definitions', 'itemcount', 2, ['id' => $adefinitionid]); > $DB->set_field('question_dataset_definitions', 'itemcount', 2, ['id' => $bdefinitionid]); > $DB->insert_record('question_dataset_items', ['definition' => $adefinitionid, > 'itemnumber' => 1, 'value' => 3]); > $DB->insert_record('question_dataset_items', ['definition' => $bdefinitionid, > 'itemnumber' => 1, 'value' => 7]); > $DB->insert_record('question_dataset_items', ['definition' => $adefinitionid, > 'itemnumber' => 2, 'value' => 6]); > $DB->insert_record('question_dataset_items', ['definition' => $bdefinitionid, > 'itemnumber' => 2, 'value' => 4]);
$question = question_bank::load_question($questiondata->id);
< $quba1 = question_engine::make_questions_usage_by_activity('test', context_system::instance());
> $quba1 = question_engine::make_questions_usage_by_activity('test', \context_system::instance());
$quba1->set_preferred_behaviour('deferredfeedback'); $slot1 = $quba1->add_question($question);
< $quba1->start_all_questions(new core_question\engine\variants\least_used_strategy( < $quba1, new qubaid_list(array())));
> $quba1->start_all_questions(new least_used_strategy( > $quba1, new qubaid_list([])));
question_engine::save_questions_usage_by_activity($quba1); $variant1 = $quba1->get_variant($slot1); // Second attempt should use the other variant.
< $quba2 = question_engine::make_questions_usage_by_activity('test', context_system::instance());
> $quba2 = question_engine::make_questions_usage_by_activity('test', \context_system::instance());
$quba2->set_preferred_behaviour('deferredfeedback'); $slot2 = $quba2->add_question($question);
< $quba2->start_all_questions(new core_question\engine\variants\least_used_strategy( < $quba1, new qubaid_list(array($quba1->get_id()))));
> $quba2->start_all_questions(new least_used_strategy( > $quba1, new qubaid_list([$quba1->get_id()])));
question_engine::save_questions_usage_by_activity($quba2); $variant2 = $quba2->get_variant($slot2); $this->assertNotEquals($variant1, $variant2); // Third attempt uses either variant at random.
< $quba3 = question_engine::make_questions_usage_by_activity('test', context_system::instance());
> $quba3 = question_engine::make_questions_usage_by_activity('test', \context_system::instance());
$quba3->set_preferred_behaviour('deferredfeedback'); $slot3 = $quba3->add_question($question);
< $quba3->start_all_questions(new core_question\engine\variants\least_used_strategy( < $quba1, new qubaid_list(array($quba1->get_id(), $quba2->get_id()))));
> $quba3->start_all_questions(new least_used_strategy( > $quba1, new qubaid_list([$quba1->get_id(), $quba2->get_id()])));
$variant3 = $quba3->get_variant($slot3); $this->assertTrue($variant3 == $variant1 || $variant3 == $variant2); } }