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<?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/>.

/**
 * This file contains tests that walks a question through the deferred feedback
 * with certainty base marking behaviour.
 *
 * @package    qbehaviour
 * @subpackage deferredcbm
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

global $CFG;
require_once(__DIR__ . '/../../../engine/lib.php');
require_once(__DIR__ . '/../../../engine/tests/helpers.php');

/**
 * Unit tests for the deferred feedback with certainty base marking behaviour.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qbehaviour_deferredcbm_type_test extends qbehaviour_walkthrough_test_base {

/** @var qbehaviour_deferredcbm_type */
    protected $behaviourtype;

public function setUp() {
        parent::setUp();
        $this->behaviourtype = question_engine::get_behaviour_type('deferredcbm');
    }

public function test_is_archetypal() {
        $this->assertTrue($this->behaviourtype->is_archetypal());
    }

public function test_get_unused_display_options() {
        $this->assertEquals(array('correctness', 'marks', 'specificfeedback', 'generalfeedback', 'rightanswer'),
                $this->behaviourtype->get_unused_display_options());
    }

public function test_can_questions_finish_during_the_attempt() {
        $this->assertFalse($this->behaviourtype->can_questions_finish_during_the_attempt());
    }

public function test_adjust_random_guess_score() {
        $this->assertEquals(0, $this->behaviourtype->adjust_random_guess_score(0));
        $this->assertEquals(1, $this->behaviourtype->adjust_random_guess_score(1));
    }

public function test_summarise_usage_max_mark_1() {

// Create a usage comprising 3 true-false questions.
        $this->quba->set_preferred_behaviour('deferredcbm');
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 3);
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 3);
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 3);
        $this->quba->start_all_questions();

// Process responses right, high certainty; right, med certainty; wrong, med certainty.
        $this->quba->process_action(1, array('answer' => 1, '-certainty' => 3));
        $this->quba->process_action(2, array('answer' => 1, '-certainty' => 2));
        $this->quba->process_action(3, array('answer' => 0, '-certainty' => 2));
        $this->quba->finish_all_questions();

// Get the summary.
        $summarydata = $this->quba->get_summary_information(new question_display_options());

// Verify.
        $this->assertContains(get_string('breakdownbycertainty', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement_heading']['content']);

$this->assertContains('100%',
                $summarydata['qbehaviour_cbm_judgement3']['content']);
        $this->assertContains(get_string('judgementok', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement3']['content']);

$this->assertContains('50%',
                $summarydata['qbehaviour_cbm_judgement2']['content']);
        $this->assertContains(get_string('slightlyoverconfident', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement2']['content']);

$this->assertContains(get_string('noquestions', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement1']['content']);
    }

public function test_summarise_usage_max_mark_3() {

// Create a usage comprising 3 true-false questions.
        $this->quba->set_preferred_behaviour('deferredcbm');
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 1);
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 1);
        $this->quba->add_question(test_question_maker::make_question('truefalse', 'true'), 1);
        $this->quba->start_all_questions();

// Get the summary.
        $summarydata = $this->quba->get_summary_information(new question_display_options());

// Verify.
        $this->assertContains(get_string('breakdownbycertainty', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement_heading']['content']);

$this->assertContains(get_string('noquestions', 'qbehaviour_deferredcbm'),
                $summarydata['qbehaviour_cbm_judgement1']['content']);
    }

public function test_calculate_bonus() {
        $this->assertEquals(0.05,  $this->behaviourtype->calculate_bonus(1, 1/2));
        $this->assertEquals(-0.01, $this->behaviourtype->calculate_bonus(2, 9/10));
        $this->assertEquals(0,     $this->behaviourtype->calculate_bonus(3, 1));
    }
}