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603 lines
25 KiB
603 lines
25 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Tests for the {@link core_question\bank\random_question_loader} class.
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*
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* @package core_question
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* @copyright 2015 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Tests for the {@link core_question\bank\random_question_loader} class.
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*
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* @copyright 2015 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class random_question_loader_testcase extends advanced_testcase {
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public function test_empty_category_gives_null() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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$this->assertNull($loader->get_next_question_id($cat->id, 1));
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}
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public function test_unknown_category_behaves_like_empty() {
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// It is up the caller to make sure the category id is valid.
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertNull($loader->get_next_question_id(-1, 1));
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}
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public function test_descriptions_not_returned() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$info = $generator->create_question('description', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_hidden_questions_not_returned() {
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global $DB;
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$DB->set_field('question', 'hidden', 1, array('id' => $question1->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_cloze_subquestions_not_returned() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('multianswer', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertEquals($question1->id, $loader->get_next_question_id($cat->id, 0));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_random_questions_not_returned() {
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$this->resetAfterTest();
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$this->setAdminUser();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$course = $this->getDataGenerator()->create_course();
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$quiz = $this->getDataGenerator()->create_module('quiz', array('course' => $course));
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quiz_add_random_questions($quiz, 1, $cat->id, 1, false);
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_one_question_category_returns_that_q_then_null() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertEquals($question1->id, $loader->get_next_question_id($cat->id, 1));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_two_question_category_returns_both_then_null() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$question2 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$questionids = array();
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$questionids[] = $loader->get_next_question_id($cat->id, 0);
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$questionids[] = $loader->get_next_question_id($cat->id, 0);
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sort($questionids);
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$this->assertEquals(array($question1->id, $question2->id), $questionids);
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$this->assertNull($loader->get_next_question_id($cat->id, 1));
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}
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public function test_nested_categories() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat1 = $generator->create_question_category();
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$cat2 = $generator->create_question_category(array('parent' => $cat1->id));
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat1->id));
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$question2 = $generator->create_question('shortanswer', null, array('category' => $cat2->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertEquals($question2->id, $loader->get_next_question_id($cat2->id, 1));
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$this->assertEquals($question1->id, $loader->get_next_question_id($cat1->id, 1));
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$this->assertNull($loader->get_next_question_id($cat1->id, 0));
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}
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public function test_used_question_not_returned_until_later() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$question2 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()),
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array($question2->id => 2));
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$this->assertEquals($question1->id, $loader->get_next_question_id($cat->id, 0));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_previously_used_question_not_returned_until_later() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$question2 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$quba = question_engine::make_questions_usage_by_activity('test', context_system::instance());
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$quba->set_preferred_behaviour('deferredfeedback');
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$question = question_bank::load_question($question2->id);
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$quba->add_question($question);
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$quba->add_question($question);
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$quba->start_all_questions();
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question_engine::save_questions_usage_by_activity($quba);
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array($quba->get_id())));
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$this->assertEquals($question1->id, $loader->get_next_question_id($cat->id, 0));
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$this->assertEquals($question2->id, $loader->get_next_question_id($cat->id, 0));
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$this->assertNull($loader->get_next_question_id($cat->id, 0));
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}
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public function test_empty_category_does_not_have_question_available() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertFalse($loader->is_question_available($cat->id, 0, 1));
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$this->assertFalse($loader->is_question_available($cat->id, 1, 1));
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}
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public function test_descriptions_not_available() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$info = $generator->create_question('description', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertFalse($loader->is_question_available($cat->id, 0, $info->id));
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$this->assertFalse($loader->is_question_available($cat->id, 1, $info->id));
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}
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public function test_existing_question_is_available_but_then_marked_used() {
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$this->resetAfterTest();
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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$cat = $generator->create_question_category();
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$question1 = $generator->create_question('shortanswer', null, array('category' => $cat->id));
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$loader = new \core_question\bank\random_question_loader(new qubaid_list(array()));
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$this->assertTrue($loader->is_question_available($cat->id, 0, $question1->id));
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$this->assertFalse($loader->is_question_available($cat->id, 0, $question1->id));
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$this->assertFalse($loader->is_question_available($cat->id, 0, -1));
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}
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/**
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* Data provider for the get_questions test.
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*/
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public function get_questions_test_cases() {
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return [
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'empty category' => [
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'categoryindex' => 'emptycat',
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'includesubcategories' => false,
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'usetagnames' => [],
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'expectedquestionindexes' => []
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],
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'single category' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => false,
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'usetagnames' => [],
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'expectedquestionindexes' => ['cat1q1', 'cat1q2']
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],
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'include sub category' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
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'usetagnames' => [],
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'expectedquestionindexes' => ['cat1q1', 'cat1q2', 'subcatq1', 'subcatq2']
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],
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'single category with tags' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => false,
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'usetagnames' => ['cat1'],
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'expectedquestionindexes' => ['cat1q1']
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],
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'include sub category with tag on parent' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
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'usetagnames' => ['cat1'],
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'expectedquestionindexes' => ['cat1q1']
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],
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'include sub category with tag on sub' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
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'usetagnames' => ['subcat'],
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'expectedquestionindexes' => ['subcatq1']
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],
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'include sub category with same tag on parent and sub' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
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'usetagnames' => ['foo'],
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'expectedquestionindexes' => ['cat1q1', 'subcatq1']
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],
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'include sub category with tag not matching' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
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'usetagnames' => ['cat1', 'cat2'],
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'expectedquestionindexes' => []
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]
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];
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}
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/**
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* Test the get_questions function with various parameter combinations.
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*
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* This function creates a data set as follows:
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* Category: cat1
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* Question: cat1q1
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* Tags: 'cat1', 'foo'
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* Question: cat1q2
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* Category: cat2
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* Question: cat2q1
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* Tags: 'cat2', 'foo'
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* Question: cat2q2
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* Category: subcat
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* Question: subcatq1
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* Tags: 'subcat', 'foo'
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* Question: subcatq2
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* Parent: cat1
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* Category: emptycat
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*
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* @dataProvider get_questions_test_cases()
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* @param string $categoryindex The named index for the category to use
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* @param bool $includesubcategories If the search should include subcategories
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* @param string[] $usetagnames The tag names to include in the search
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* @param string[] $expectedquestionindexes The questions expected in the result
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*/
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public function test_get_questions_variations(
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$categoryindex,
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$includesubcategories,
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$usetagnames,
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$expectedquestionindexes
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) {
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$this->resetAfterTest();
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$categories = [];
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$questions = [];
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$tagnames = [
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'cat1',
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'cat2',
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'subcat',
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'foo'
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];
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$collid = core_tag_collection::get_default();
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$tags = core_tag_tag::create_if_missing($collid, $tagnames);
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$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
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// First category and questions.
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list($category, $categoryquestions) = $this->create_category_and_questions(2, ['cat1', 'foo']);
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$categories['cat1'] = $category;
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$questions['cat1q1'] = $categoryquestions[0];
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$questions['cat1q2'] = $categoryquestions[1];
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// Second category and questions.
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list($category, $categoryquestions) = $this->create_category_and_questions(2, ['cat2', 'foo']);
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$categories['cat2'] = $category;
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$questions['cat2q1'] = $categoryquestions[0];
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$questions['cat2q2'] = $categoryquestions[1];
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// Sub category and questions.
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list($category, $categoryquestions) = $this->create_category_and_questions(2, ['subcat', 'foo'], $categories['cat1']);
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$categories['subcat'] = $category;
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$questions['subcatq1'] = $categoryquestions[0];
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$questions['subcatq2'] = $categoryquestions[1];
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// Empty category.
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list($category, $categoryquestions) = $this->create_category_and_questions(0);
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$categories['emptycat'] = $category;
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// Generate the arguments for the get_questions function.
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$category = $categories[$categoryindex];
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$tagids = array_map(function($tagname) use ($tags) {
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return $tags[$tagname]->id;
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}, $usetagnames);
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$loader = new \core_question\bank\random_question_loader(new qubaid_list([]));
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$result = $loader->get_questions($category->id, $includesubcategories, $tagids);
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// Generate the expected question set.
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$expectedquestions = array_map(function($index) use ($questions) {
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return $questions[$index];
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}, $expectedquestionindexes);
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// Ensure the result matches what was expected.
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$this->assertCount(count($expectedquestions), $result);
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foreach ($expectedquestions as $question) {
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$this->assertEquals($result[$question->id]->id, $question->id);
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$this->assertEquals($result[$question->id]->category, $question->category);
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}
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}
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/**
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* get_questions should allow limiting and offsetting of the result set.
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*/
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public function test_get_questions_with_limit_and_offset() {
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$this->resetAfterTest();
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$numberofquestions = 5;
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$includesubcategories = false;
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$tagids = [];
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$limit = 1;
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$offset = 0;
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$loader = new \core_question\bank\random_question_loader(new qubaid_list([]));
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list($category, $questions) = $this->create_category_and_questions($numberofquestions);
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// Sort the questions by id to match the ordering of the get_questions
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// function.
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usort($questions, function($a, $b) {
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$aid = $a->id;
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$bid = $b->id;
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if ($aid == $bid) {
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return 0;
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}
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return $aid < $bid ? -1 : 1;
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});
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for ($i = 0; $i < $numberofquestions; $i++) {
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$result = $loader->get_questions(
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$category->id,
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$includesubcategories,
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$tagids,
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$limit,
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$offset
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);
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$this->assertCount($limit, $result);
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$actual = array_shift($result);
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$expected = $questions[$i];
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$this->assertEquals($expected->id, $actual->id);
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$offset++;
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}
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}
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/**
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* get_questions should allow retrieving questions with only a subset of
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* fields populated.
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*/
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public function test_get_questions_with_restricted_fields() {
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$this->resetAfterTest();
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$includesubcategories = false;
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$tagids = [];
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$limit = 10;
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$offset = 0;
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$fields = ['id', 'name'];
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$loader = new \core_question\bank\random_question_loader(new qubaid_list([]));
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list($category, $questions) = $this->create_category_and_questions(1);
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$result = $loader->get_questions(
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$category->id,
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$includesubcategories,
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$tagids,
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$limit,
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$offset,
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$fields
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);
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$expectedquestion = array_shift($questions);
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$actualquestion = array_shift($result);
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$actualfields = get_object_vars($actualquestion);
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$actualfields = array_keys($actualfields);
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sort($actualfields);
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sort($fields);
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$this->assertEquals($fields, $actualfields);
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}
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/**
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* Data provider for the count_questions test.
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*/
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public function count_questions_test_cases() {
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return [
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'empty category' => [
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'categoryindex' => 'emptycat',
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'includesubcategories' => false,
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'usetagnames' => [],
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'expectedcount' => 0
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],
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'single category' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => false,
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'usetagnames' => [],
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'expectedcount' => 2
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],
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'include sub category' => [
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'categoryindex' => 'cat1',
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'includesubcategories' => true,
|
|
'usetagnames' => [],
|
|
'expectedcount' => 4
|
|
],
|
|
'single category with tags' => [
|
|
'categoryindex' => 'cat1',
|
|
'includesubcategories' => false,
|
|
'usetagnames' => ['cat1'],
|
|
'expectedcount' => 1
|
|
],
|
|
'include sub category with tag on parent' => [
|
|
'categoryindex' => 'cat1',
|
|
'includesubcategories' => true,
|
|
'usetagnames' => ['cat1'],
|
|
'expectedcount' => 1
|
|
],
|
|
'include sub category with tag on sub' => [
|
|
'categoryindex' => 'cat1',
|
|
'includesubcategories' => true,
|
|
'usetagnames' => ['subcat'],
|
|
'expectedcount' => 1
|
|
],
|
|
'include sub category with same tag on parent and sub' => [
|
|
'categoryindex' => 'cat1',
|
|
'includesubcategories' => true,
|
|
'usetagnames' => ['foo'],
|
|
'expectedcount' => 2
|
|
],
|
|
'include sub category with tag not matching' => [
|
|
'categoryindex' => 'cat1',
|
|
'includesubcategories' => true,
|
|
'usetagnames' => ['cat1', 'cat2'],
|
|
'expectedcount' => 0
|
|
]
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Test the count_questions function with various parameter combinations.
|
|
*
|
|
* This function creates a data set as follows:
|
|
* Category: cat1
|
|
* Question: cat1q1
|
|
* Tags: 'cat1', 'foo'
|
|
* Question: cat1q2
|
|
* Category: cat2
|
|
* Question: cat2q1
|
|
* Tags: 'cat2', 'foo'
|
|
* Question: cat2q2
|
|
* Category: subcat
|
|
* Question: subcatq1
|
|
* Tags: 'subcat', 'foo'
|
|
* Question: subcatq2
|
|
* Parent: cat1
|
|
* Category: emptycat
|
|
*
|
|
* @dataProvider count_questions_test_cases()
|
|
* @param string $categoryindex The named index for the category to use
|
|
* @param bool $includesubcategories If the search should include subcategories
|
|
* @param string[] $usetagnames The tag names to include in the search
|
|
* @param int $expectedcount The number of questions expected in the result
|
|
*/
|
|
public function test_count_questions_variations(
|
|
$categoryindex,
|
|
$includesubcategories,
|
|
$usetagnames,
|
|
$expectedcount
|
|
) {
|
|
$this->resetAfterTest();
|
|
|
|
$categories = [];
|
|
$questions = [];
|
|
$tagnames = [
|
|
'cat1',
|
|
'cat2',
|
|
'subcat',
|
|
'foo'
|
|
];
|
|
$collid = core_tag_collection::get_default();
|
|
$tags = core_tag_tag::create_if_missing($collid, $tagnames);
|
|
$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
|
|
|
|
// First category and questions.
|
|
list($category, $categoryquestions) = $this->create_category_and_questions(2, ['cat1', 'foo']);
|
|
$categories['cat1'] = $category;
|
|
$questions['cat1q1'] = $categoryquestions[0];
|
|
$questions['cat1q2'] = $categoryquestions[1];
|
|
// Second category and questions.
|
|
list($category, $categoryquestions) = $this->create_category_and_questions(2, ['cat2', 'foo']);
|
|
$categories['cat2'] = $category;
|
|
$questions['cat2q1'] = $categoryquestions[0];
|
|
$questions['cat2q2'] = $categoryquestions[1];
|
|
// Sub category and questions.
|
|
list($category, $categoryquestions) = $this->create_category_and_questions(2, ['subcat', 'foo'], $categories['cat1']);
|
|
$categories['subcat'] = $category;
|
|
$questions['subcatq1'] = $categoryquestions[0];
|
|
$questions['subcatq2'] = $categoryquestions[1];
|
|
// Empty category.
|
|
list($category, $categoryquestions) = $this->create_category_and_questions(0);
|
|
$categories['emptycat'] = $category;
|
|
|
|
// Generate the arguments for the get_questions function.
|
|
$category = $categories[$categoryindex];
|
|
$tagids = array_map(function($tagname) use ($tags) {
|
|
return $tags[$tagname]->id;
|
|
}, $usetagnames);
|
|
|
|
$loader = new \core_question\bank\random_question_loader(new qubaid_list([]));
|
|
$result = $loader->count_questions($category->id, $includesubcategories, $tagids);
|
|
|
|
// Ensure the result matches what was expected.
|
|
$this->assertEquals($expectedcount, $result);
|
|
}
|
|
|
|
/**
|
|
* Create a question category and create questions in that category. Tag
|
|
* the first question in each category with the given tags.
|
|
*
|
|
* @param int $questioncount How many questions to create.
|
|
* @param string[] $tagnames The list of tags to use.
|
|
* @param stdClass|null $parentcategory The category to set as the parent of the created category.
|
|
* @return array The category and questions.
|
|
*/
|
|
protected function create_category_and_questions($questioncount, $tagnames = [], $parentcategory = null) {
|
|
$generator = $this->getDataGenerator()->get_plugin_generator('core_question');
|
|
|
|
if ($parentcategory) {
|
|
$catparams = ['parent' => $parentcategory->id];
|
|
} else {
|
|
$catparams = [];
|
|
}
|
|
|
|
$category = $generator->create_question_category($catparams);
|
|
$questions = [];
|
|
|
|
for ($i = 0; $i < $questioncount; $i++) {
|
|
$questions[] = $generator->create_question('shortanswer', null, ['category' => $category->id]);
|
|
}
|
|
|
|
if (!empty($tagnames) && !empty($questions)) {
|
|
$context = context::instance_by_id($category->contextid);
|
|
core_tag_tag::set_item_tags('core_question', 'question', $questions[0]->id, $context, $tagnames);
|
|
}
|
|
|
|
return [$category, $questions];
|
|
}
|
|
}
|
|
|