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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 adaptive (no penalties)k
 * behaviour.
 *
 * @package    qbehaviour
 * @subpackage adaptivenopenalty
 * @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 adaptive (no penalties) behaviour.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qbehaviour_adaptivenopenalty_walkthrough_test extends qbehaviour_walkthrough_test_base {

protected function get_does_not_contain_gradingdetails_expectation() {
        return new question_no_pattern_expectation('/class="gradingdetails"/');
    }

protected function get_does_not_contain_penalty_info_expectation() {
        $penaltyinfo = get_string('gradingdetailspenalty', 'qbehaviour_adaptive', 'XXXXX');
        $penaltypattern = '/'.str_replace('XXXXX', '\\w*', preg_quote($penaltyinfo, '/')).'/';
        return new question_no_pattern_expectation($penaltypattern);
    }

protected function get_does_not_contain_total_penalty_expectation() {
        $penaltyinfo = get_string('gradingdetailspenaltytotal', 'qbehaviour_adaptive', 'XXXXX');
        $penaltypattern = '/'.str_replace('XXXXX', '\\w*', preg_quote($penaltyinfo, '/')).'/';
        return new question_no_pattern_expectation($penaltypattern);
    }

public function test_multichoice() {

// Create a multiple choice, single response question.
        $mc = test_question_maker::make_a_multichoice_single_question();
        $mc->penalty = 0.3333333;
        $this->start_attempt_at_question($mc, 'adaptivenopenalty', 3);

$rightindex = $this->get_mc_right_answer_index($mc);
        $wrongindex = ($rightindex + 1) % 3;

// Check the initial state.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_marked_out_of_summary(),
                $this->get_contains_question_text_expectation($mc),
                $this->get_contains_mc_radio_expectation(0, true, false),
                $this->get_contains_mc_radio_expectation(1, true, false),
                $this->get_contains_mc_radio_expectation(2, true, false),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_feedback_expectation());

// Process a submit.
        $this->process_submission(array('answer' => $wrongindex, '-submit' => 1));

// Verify.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(0);
        $this->check_current_output(
                $this->get_contains_mark_summary(0),
                $this->get_contains_mc_radio_expectation($wrongindex, true, true),
                $this->get_contains_mc_radio_expectation(($wrongindex + 1) % 3, true, false),
                $this->get_contains_mc_radio_expectation(($wrongindex + 2) % 3, true, false),
                $this->get_contains_incorrect_expectation(),
                $this->get_does_not_contain_penalty_info_expectation(),
                $this->get_does_not_contain_total_penalty_expectation());
        $this->assertRegExp('/B|C/',
                $this->quba->get_response_summary($this->slot));

// Process a change of answer to the right one, but not sumbitted.
        $this->process_submission(array('answer' => $rightindex));

// Verify.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(0);
        $this->check_current_output(
                $this->get_contains_mark_summary(0),
                $this->get_contains_mc_radio_expectation($rightindex, true, true),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, true, false),
                $this->get_contains_mc_radio_expectation(($rightindex + 2) % 3, true, false));
        $this->assertRegExp('/B|C/',
                $this->quba->get_response_summary($this->slot));

// Now submit the right answer.
        $this->process_submission(array('answer' => $rightindex, '-submit' => 1));

// Verify.
        $this->check_current_state(question_state::$complete);
        $this->check_current_mark(3);
        $this->check_current_output(
                $this->get_contains_mark_summary(3),
                $this->get_contains_mc_radio_expectation($rightindex, true, true),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, true, false),
                $this->get_contains_mc_radio_expectation(($rightindex + 2) % 3, true, false),
                $this->get_contains_correct_expectation(),
                $this->get_does_not_contain_penalty_info_expectation(),
                $this->get_does_not_contain_total_penalty_expectation());
        $this->assertEquals('A',
                $this->quba->get_response_summary($this->slot));

// Finish the attempt.
        $this->quba->finish_all_questions();

// Verify.
        $this->check_current_state(question_state::$gradedright);
        $this->check_current_mark(3);
        $this->check_current_output(
                $this->get_contains_mark_summary(3),
                $this->get_contains_mc_radio_expectation($rightindex, false, true),
                $this->get_contains_mc_radio_expectation(($rightindex + 1) % 3, false, false),
                $this->get_contains_mc_radio_expectation(($rightindex + 2) % 3, false, false),
                $this->get_contains_correct_expectation());

// Process a manual comment.
        $this->manual_grade('Not good enough!', 1, FORMAT_HTML);

// Verify.
        $this->check_current_state(question_state::$mangrpartial);
        $this->check_current_mark(1);
        $this->check_current_output(
                $this->get_contains_mark_summary(1),
                new question_pattern_expectation('/' . preg_quote('Not good enough!', '/') . '/'));

// Now change the correct answer to the question, and regrade.
        $mc->answers[13]->fraction = -0.33333333;
        $mc->answers[14]->fraction = 1; // We don't know which "wrong" index we chose above!
        $mc->answers[15]->fraction = 1; // Therefore, treat answers B and C with the same score.
        $this->quba->regrade_all_questions();

$autogradedstep = $this->get_step($this->get_step_count() - 3);
        $this->assertEquals($autogradedstep->get_fraction(), 1, '', 0.0000001);
    }

public function test_multichoice2() {

// Create a multiple choice, multiple response question.
        $mc = test_question_maker::make_a_multichoice_multi_question();
        $mc->penalty = 0.3333333;
        $mc->shuffleanswers = 0;
        $this->start_attempt_at_question($mc, 'adaptivenopenalty', 2);

// Process a submit.
        $this->process_submission(array('choice0' => 1, 'choice2' => 1, '-submit' => 1));

// Verify.
        $this->check_current_state(question_state::$complete);
        $this->check_current_mark(2);
        $this->check_current_output(
                $this->get_contains_mark_summary(2),
                $this->get_contains_submit_button_expectation(true),
                $this->get_contains_correct_expectation(),
                $this->get_does_not_contain_penalty_info_expectation(),
                $this->get_does_not_contain_total_penalty_expectation());

// Save the same correct answer again. Should no do anything.
        $numsteps = $this->get_step_count();
        $this->process_submission(array('choice0' => 1, 'choice2' => 1));

// Verify.
        $this->check_step_count($numsteps);
        $this->check_current_state(question_state::$complete);

// Finish the attempt.
        $this->quba->finish_all_questions();

// Verify.
        $this->check_step_count($numsteps + 1);
        $this->check_current_state(question_state::$gradedright);
        $this->check_current_mark(2);
        $this->check_current_output(
                $this->get_contains_mark_summary(2),
                $this->get_does_not_contain_submit_button_expectation(),
                $this->get_contains_correct_expectation());
    }

public function test_numerical_invalid() {

// Create a numerical question
        $numq = test_question_maker::make_question('numerical', 'pi');
        $numq->penalty = 0.1;
        $this->start_attempt_at_question($numq, 'adaptivenopenalty');

// Submit a non-numerical answer.
        $this->process_submission(array('-submit' => 1, 'answer' => 'Pi'));

// Verify.
        $this->check_current_state(question_state::$invalid);
        $this->check_current_mark(null);
        $this->check_current_output(
                $this->get_contains_marked_out_of_summary(1),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_correctness_expectation(),
                $this->get_contains_validation_error_expectation(),
                $this->get_does_not_contain_feedback_expectation());

// Submit an incorrect answer.
        $this->process_submission(array('-submit' => 1, 'answer' => '-5'));

// Verify.
        $this->check_current_state(question_state::$todo);
        $this->check_current_mark(0);
        $this->check_current_output(
                $this->get_contains_mark_summary(0),
                $this->get_contains_submit_button_expectation(true),
                $this->get_contains_incorrect_expectation(),
                $this->get_does_not_contain_penalty_info_expectation(),
                $this->get_does_not_contain_total_penalty_expectation(),
                $this->get_does_not_contain_validation_error_expectation());

// Submit another non-numerical answer.
        $this->process_submission(array('-submit' => 1, 'answer' => 'Pi*2'));

// Verify.
        $this->check_current_state(question_state::$invalid);
        $this->check_current_mark(0);
        $this->check_current_output(
                $this->get_contains_mark_summary(0),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_correctness_expectation(),
                $this->get_contains_validation_error_expectation(),
                $this->get_does_not_contain_gradingdetails_expectation());

// Submit the correct answer.
        $this->process_submission(array('-submit' => 1, 'answer' => '3.14'));

// Verify.
        $this->check_current_state(question_state::$complete);
        $this->check_current_mark(1.0);
        $this->check_current_output(
                $this->get_contains_mark_summary(1.0),
                $this->get_contains_submit_button_expectation(true),
                $this->get_contains_correct_expectation(),
                $this->get_does_not_contain_validation_error_expectation());

// Submit another non-numerical answer.
        $this->process_submission(array('-submit' => 1, 'answer' => 'Pi/3'));

// Verify.
        $this->check_current_state(question_state::$invalid);
        $this->check_current_mark(1.0);
        $this->check_current_output(
                $this->get_contains_mark_summary(1.0),
                $this->get_contains_submit_button_expectation(true),
                $this->get_does_not_contain_correctness_expectation(),
                $this->get_contains_validation_error_expectation(),
                $this->get_does_not_contain_gradingdetails_expectation());

// Finish the attempt.
        $this->quba->finish_all_questions();

// Verify.
        $this->check_current_state(question_state::$gradedwrong);
        $this->check_current_mark(1.0);
        $this->check_current_output(
                $this->get_contains_mark_summary(1.0),
                $this->get_does_not_contain_submit_button_expectation(),
                $this->get_contains_incorrect_expectation(),
                $this->get_does_not_contain_validation_error_expectation());
    }
}