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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/>.

/**
 * Tests of the upgrade to the new Moodle question engine for attempts at
 * calculated multiple-choice questions.
 *
 * @package    qtype
 * @subpackage calculatedmulti
 * @copyright  2011 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

global $CFG;
require_once($CFG->dirroot . '/question/engine/upgrade/tests/helper.php');

/**
 * Testing the upgrade of calculated multiple-choice question attempts.
 *
 * @copyright 2011 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qtype_calculatedmulti_attempt_upgrader_test extends question_attempt_upgrader_test_base {
 public function test_calculatedmulti_adaptive_qsession96() {
 $quiz = (object) array(
 'id' => '4',
 'course' => '2',
 'name' => 'Calculated quiz',
 'intro' => '',
 'introformat' => '1',
 'timeopen' => '0',
 'timeclose' => '0',
 'attempts' => '0',
 'attemptonlast' => '0',
 'grademethod' => '1',
 'decimalpoints' => '2',
 'questiondecimalpoints' => '-1',
 'questionsperpage' => '1',
 'shufflequestions' => '0',
 'shuffleanswers' => '1',
 'sumgrades' => '3.00000',
 'grade' => '10.00000',
 'timecreated' => '0',
 'timemodified' => '1305648351',
 'timelimit' => '0',
 'password' => '',
 'subnet' => '',
 'popup' => '0',
 'delay1' => '0',
 'delay2' => '0',
 'showuserpicture' => '0',
 'showblocks' => '0',
 'preferredbehaviour' => 'adaptive',
 'reviewattempt' => '69888',
 'reviewcorrectness' => '69888',
 'reviewmarks' => '69888',
 'reviewspecificfeedback' => '69888',
 'reviewgeneralfeedback' => '69888',
 'reviewrightanswer' => '69888',
 'reviewoverallfeedback' => '4352',
 );
 $attempt = (object) array(
 'id' => '13',
 'uniqueid' => '13',
 'quiz' => '4',
 'userid' => '4',
 'attempt' => '1',
 'sumgrades' => '0.00000',
 'timestart' => '1305830650',
 'timefinish' => '1305830656',
 'timemodified' => '1305830656',
 'layout' => '16,0,17,0,18,0',
 'preview' => '0',
 );
 $question = (object) array(
 'id' => '17',
 'category' => '2',
 'parent' => '0',
 'name' => 'Calculated multiple-choice',
 'questiontext' => 'What is {a} + {b}?',
 'questiontextformat' => '1',
 'generalfeedback' => '',
 'generalfeedbackformat' => '1',
 'defaultmark' => '1.0000000',
 'penalty' => '0.1',
 'qtype' => 'calculatedmulti',
 'length' => '1',
 'stamp' => 'tjh238.vledev2.open.ac.uk+110519184120+gpbLCv',
 'version' => 'tjh238.vledev2.open.ac.uk+110519184120+P5jpWJ',
 'hidden' => '0',
 'timecreated' => '1305830480',
 'timemodified' => '1305830480',
 'createdby' => '2',
 'modifiedby' => '2',
 'maxmark' => '1.0000000',
 'options' => (object) array(
 'id' => '1',
 'question' => '17',
 'synchronize' => '0',
 'single' => '1',
 'shuffleanswers' => '1',
 'correctfeedback' => '',
 'correctfeedbackformat' => '1',
 'partiallycorrectfeedback' => '',
 'partiallycorrectfeedbackformat' => '1',
 'incorrectfeedback' => '',
 'incorrectfeedbackformat' => '1',
 'answernumbering' => 'abc',
 'shownumcorrect' => '0',
 'answers' => array(
 24 => (object) array(
 'id' => '24',
 'question' => '17',
 'answer' => '{={a} - {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 25 => (object) array(
 'id' => '25',
 'question' => '17',
 'answer' => '{={a} + {b}}',
 'answerformat' => '0',
 'fraction' => '1.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 26 => (object) array(
 'id' => '26',
 'question' => '17',
 'answer' => '{={a} / {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 27 => (object) array(
 'id' => '27',
 'question' => '17',
 'answer' => '{={a} * {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 ),
 ),
 'hints' => array(
 ),
 );
 $qsession = (object) array(
 'id' => '96',
 'attemptid' => '13',
 'questionid' => '17',
 'newest' => '257',
 'newgraded' => '257',
 'sumpenalty' => '0.1000000',
 'manualcomment' => '',
 'manualcommentformat' => '1',
 'flagged' => '0',
 );
 $qstates = array(
 254 => (object) array(
 'id' => '254',
 'attempt' => '13',
 'question' => '17',
 'seq_number' => '0',
 'answer' => 'dataset3-24,26,27,25:',
 'timestamp' => '1305830650',
 'event' => '0',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.0000000',
 ),
 257 => (object) array(
 'id' => '257',
 'attempt' => '13',
 'question' => '17',
 'seq_number' => '1',
 'answer' => 'dataset3-24,26,27,25:',
 'timestamp' => '1305830650',
 'event' => '6',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.1000000',
 ),
 );
 $this->loader->put_dataset_in_cache($question->id, 3, array('a' => '4.3', 'b' => '5.4'));

$qa = $this->updater->convert_question_attempt($quiz, $attempt, $question, $qsession, $qstates);

$expectedqa = (object) array(
            'behaviour' => 'adaptive',
            'questionid' => 17,
            'variant' => 3,
            'maxmark' => 1.0000000,
            'minfraction' => 0,
            'maxfraction' => 1,
            'flagged' => 0,
            'questionsummary' => 'What is 4.3 + 5.4?',
            'rightanswer' => '9.7',
            'responsesummary' => '',
            'timemodified' => 1305830650,
            'steps' => array(
                0 => (object) array(
                    'sequencenumber' => 0,
                    'state' => 'todo',
                    'fraction' => null,
                    'timecreated' => 1305830650,
                    'userid' => 4,
                    'data' => array('_order' => '24,26,27,25', '_var_a' => '4.3', '_var_b' => '5.4'),
                ),
                1 => (object) array(
                    'sequencenumber' => 1,
                    'state' => 'gradedwrong',
                    'fraction' => null,
                    'timecreated' => 1305830650,
                    'userid' => 4,
                    'data' => array('-finish' => 1, '-_try' => 1, '-_rawfraction' => 0),
                ),
            ),
        );

$this->compare_qas($expectedqa, $qa);
    }

public function test_calculatedmulti_adaptive_qsession99() {
 $quiz = (object) array(
 'id' => '4',
 'course' => '2',
 'name' => 'Calculated quiz',
 'intro' => '',
 'introformat' => '1',
 'timeopen' => '0',
 'timeclose' => '0',
 'attempts' => '0',
 'attemptonlast' => '0',
 'grademethod' => '1',
 'decimalpoints' => '2',
 'questiondecimalpoints' => '-1',
 'questionsperpage' => '1',
 'shufflequestions' => '0',
 'shuffleanswers' => '1',
 'sumgrades' => '3.00000',
 'grade' => '10.00000',
 'timecreated' => '0',
 'timemodified' => '1305648351',
 'timelimit' => '0',
 'password' => '',
 'subnet' => '',
 'popup' => '0',
 'delay1' => '0',
 'delay2' => '0',
 'showuserpicture' => '0',
 'showblocks' => '0',
 'preferredbehaviour' => 'adaptive',
 'reviewattempt' => '69888',
 'reviewcorrectness' => '69888',
 'reviewmarks' => '69888',
 'reviewspecificfeedback' => '69888',
 'reviewgeneralfeedback' => '69888',
 'reviewrightanswer' => '69888',
 'reviewoverallfeedback' => '4352',
 );
 $attempt = (object) array(
 'id' => '14',
 'uniqueid' => '14',
 'quiz' => '4',
 'userid' => '4',
 'attempt' => '2',
 'sumgrades' => '2.80000',
 'timestart' => '1305830661',
 'timefinish' => '1305830729',
 'timemodified' => '1305830729',
 'layout' => '16,0,17,0,18,0',
 'preview' => '0',
 );
 $question = (object) array(
 'id' => '17',
 'category' => '2',
 'parent' => '0',
 'name' => 'Calculated multiple-choice',
 'questiontext' => 'What is {a} + {b}?',
 'questiontextformat' => '1',
 'generalfeedback' => '',
 'generalfeedbackformat' => '1',
 'defaultmark' => '1.0000000',
 'penalty' => '0.1',
 'qtype' => 'calculatedmulti',
 'length' => '1',
 'stamp' => 'tjh238.vledev2.open.ac.uk+110519184120+gpbLCv',
 'version' => 'tjh238.vledev2.open.ac.uk+110519184120+P5jpWJ',
 'hidden' => '0',
 'timecreated' => '1305830480',
 'timemodified' => '1305830480',
 'createdby' => '2',
 'modifiedby' => '2',
 'maxmark' => '1.0000000',
 'options' => (object) array(
 'id' => '1',
 'question' => '17',
 'synchronize' => '0',
 'single' => '1',
 'shuffleanswers' => '1',
 'correctfeedback' => '',
 'correctfeedbackformat' => '1',
 'partiallycorrectfeedback' => '',
 'partiallycorrectfeedbackformat' => '1',
 'incorrectfeedback' => '',
 'incorrectfeedbackformat' => '1',
 'answernumbering' => 'abc',
 'shownumcorrect' => '0',
 'answers' => array(
 24 => (object) array(
 'id' => '24',
 'question' => '17',
 'answer' => '{={a} - {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 25 => (object) array(
 'id' => '25',
 'question' => '17',
 'answer' => '{={a} + {b}}',
 'answerformat' => '0',
 'fraction' => '1.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 26 => (object) array(
 'id' => '26',
 'question' => '17',
 'answer' => '{={a} / {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 27 => (object) array(
 'id' => '27',
 'question' => '17',
 'answer' => '{={a} * {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 ),
 ),
 'hints' => array(
 ),
 );
 $qsession = (object) array(
 'id' => '99',
 'attemptid' => '14',
 'questionid' => '17',
 'newest' => '268',
 'newgraded' => '268',
 'sumpenalty' => '0.2000000',
 'manualcomment' => '',
 'manualcommentformat' => '1',
 'flagged' => '0',
 );
 $qstates = array(
 260 => (object) array(
 'id' => '260',
 'attempt' => '14',
 'question' => '17',
 'seq_number' => '0',
 'answer' => 'dataset8-25,24,27,26:',
 'timestamp' => '1305830661',
 'event' => '0',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.0000000',
 ),
 264 => (object) array(
 'id' => '264',
 'attempt' => '14',
 'question' => '17',
 'seq_number' => '1',
 'answer' => 'dataset8-25,24,27,26:25',
 'timestamp' => '1305830699',
 'event' => '3',
 'grade' => '1.0000000',
 'raw_grade' => '1.0000000',
 'penalty' => '0.1000000',
 ),
 268 => (object) array(
 'id' => '268',
 'attempt' => '14',
 'question' => '17',
 'seq_number' => '2',
 'answer' => 'dataset8-25,24,27,26:25',
 'timestamp' => '1305830699',
 'event' => '6',
 'grade' => '1.0000000',
 'raw_grade' => '1.0000000',
 'penalty' => '0.1000000',
 ),
 );
 $this->loader->put_dataset_in_cache($question->id, 8, array('a' => '3.7', 'b' => '6.0'));

$qa = $this->updater->convert_question_attempt($quiz, $attempt, $question, $qsession, $qstates);

$expectedqa = (object) array(
            'behaviour' => 'adaptive',
            'questionid' => 17,
            'variant' => 8,
            'maxmark' => 1.0000000,
            'minfraction' => 0,
            'maxfraction' => 1,
            'flagged' => 0,
            'questionsummary' => 'What is 3.7 + 6.0?',
            'rightanswer' => '9.7',
            'responsesummary' => '9.7',
            'timemodified' => 1305830699,
            'steps' => array(
                0 => (object) array(
                    'sequencenumber' => 0,
                    'state' => 'todo',
                    'fraction' => null,
                    'timecreated' => 1305830661,
                    'userid' => 4,
                    'data' => array('_order' => '25,24,27,26', '_var_a' => '3.7', '_var_b' => '6.0'),
                ),
                1 => (object) array(
                    'sequencenumber' => 1,
                    'state' => 'complete',
                    'fraction' => 1,
                    'timecreated' => 1305830699,
                    'userid' => 4,
                    'data' => array('answer' => '0', '-submit' => 1, '-_try' => 1, '-_rawfraction' => 1),
                ),
                2 => (object) array(
                    'sequencenumber' => 2,
                    'state' => 'gradedright',
                    'fraction' => 1,
                    'timecreated' => 1305830699,
                    'userid' => 4,
                    'data' => array('answer' => '0', '-finish' => 1, '-_try' => 1, '-_rawfraction' => 1),
                ),
            ),
        );

$this->compare_qas($expectedqa, $qa);
    }

public function test_calculatedmulti_adaptive_qsession102() {
 $quiz = (object) array(
 'id' => '4',
 'course' => '2',
 'name' => 'Calculated quiz',
 'intro' => '',
 'introformat' => '1',
 'timeopen' => '0',
 'timeclose' => '0',
 'attempts' => '0',
 'attemptonlast' => '0',
 'grademethod' => '1',
 'decimalpoints' => '2',
 'questiondecimalpoints' => '-1',
 'questionsperpage' => '1',
 'shufflequestions' => '0',
 'shuffleanswers' => '1',
 'sumgrades' => '3.00000',
 'grade' => '10.00000',
 'timecreated' => '0',
 'timemodified' => '1305648351',
 'timelimit' => '0',
 'password' => '',
 'subnet' => '',
 'popup' => '0',
 'delay1' => '0',
 'delay2' => '0',
 'showuserpicture' => '0',
 'showblocks' => '0',
 'preferredbehaviour' => 'adaptive',
 'reviewattempt' => '69888',
 'reviewcorrectness' => '69888',
 'reviewmarks' => '69888',
 'reviewspecificfeedback' => '69888',
 'reviewgeneralfeedback' => '69888',
 'reviewrightanswer' => '69888',
 'reviewoverallfeedback' => '4352',
 );
 $attempt = (object) array(
 'id' => '15',
 'uniqueid' => '15',
 'quiz' => '4',
 'userid' => '3',
 'attempt' => '1',
 'sumgrades' => '0.70000',
 'timestart' => '1305830744',
 'timefinish' => '0',
 'timemodified' => '1305830792',
 'layout' => '16,0,17,0,18,0',
 'preview' => '0',
 );
 $question = (object) array(
 'id' => '17',
 'category' => '2',
 'parent' => '0',
 'name' => 'Calculated multiple-choice',
 'questiontext' => 'What is {a} + {b}?',
 'questiontextformat' => '1',
 'generalfeedback' => '',
 'generalfeedbackformat' => '1',
 'defaultmark' => '1.0000000',
 'penalty' => '0.1',
 'qtype' => 'calculatedmulti',
 'length' => '1',
 'stamp' => 'tjh238.vledev2.open.ac.uk+110519184120+gpbLCv',
 'version' => 'tjh238.vledev2.open.ac.uk+110519184120+P5jpWJ',
 'hidden' => '0',
 'timecreated' => '1305830480',
 'timemodified' => '1305830480',
 'createdby' => '2',
 'modifiedby' => '2',
 'maxmark' => '1.0000000',
 'options' => (object) array(
 'id' => '1',
 'question' => '17',
 'synchronize' => '0',
 'single' => '1',
 'shuffleanswers' => '1',
 'correctfeedback' => '',
 'correctfeedbackformat' => '1',
 'partiallycorrectfeedback' => '',
 'partiallycorrectfeedbackformat' => '1',
 'incorrectfeedback' => '',
 'incorrectfeedbackformat' => '1',
 'answernumbering' => 'abc',
 'shownumcorrect' => '0',
 'answers' => array(
 24 => (object) array(
 'id' => '24',
 'question' => '17',
 'answer' => '{={a} - {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 25 => (object) array(
 'id' => '25',
 'question' => '17',
 'answer' => '{={a} + {b}}',
 'answerformat' => '0',
 'fraction' => '1.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 26 => (object) array(
 'id' => '26',
 'question' => '17',
 'answer' => '{={a} / {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 27 => (object) array(
 'id' => '27',
 'question' => '17',
 'answer' => '{={a} * {b}}',
 'answerformat' => '0',
 'fraction' => '0.0000000',
 'feedback' => '',
 'feedbackformat' => '1',
 'tolerance' => '0.01',
 'tolerancetype' => '1',
 'correctanswerlength' => '2',
 'correctanswerformat' => '1',
 ),
 ),
 ),
 'hints' => array(
 ),
 );
 $qsession = (object) array(
 'id' => '102',
 'attemptid' => '15',
 'questionid' => '17',
 'newest' => '278',
 'newgraded' => '278',
 'sumpenalty' => '0.5000000',
 'manualcomment' => '',
 'manualcommentformat' => '1',
 'flagged' => '0',
 );
 $qstates = array(
 271 => (object) array(
 'id' => '271',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '0',
 'answer' => 'dataset7-26,24,25,27:',
 'timestamp' => '1305830744',
 'event' => '0',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.0000000',
 ),
 274 => (object) array(
 'id' => '274',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '1',
 'answer' => 'dataset7-26,24,25,27:27',
 'timestamp' => '1305830759',
 'event' => '3',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.1000000',
 ),
 275 => (object) array(
 'id' => '275',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '2',
 'answer' => 'dataset7-26,24,25,27:24',
 'timestamp' => '1305830761',
 'event' => '3',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.1000000',
 ),
 276 => (object) array(
 'id' => '276',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '3',
 'answer' => 'dataset7-26,24,25,27:26',
 'timestamp' => '1305830764',
 'event' => '3',
 'grade' => '0.0000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.1000000',
 ),
 277 => (object) array(
 'id' => '277',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '4',
 'answer' => 'dataset7-26,24,25,27:25',
 'timestamp' => '1305830766',
 'event' => '3',
 'grade' => '0.7000000',
 'raw_grade' => '1.0000000',
 'penalty' => '0.1000000',
 ),
 278 => (object) array(
 'id' => '278',
 'attempt' => '15',
 'question' => '17',
 'seq_number' => '5',
 'answer' => 'dataset7-26,24,25,27:24',
 'timestamp' => '1305830768',
 'event' => '3',
 'grade' => '0.7000000',
 'raw_grade' => '0.0000000',
 'penalty' => '0.1000000',
 ),
 );
 $this->loader->put_dataset_in_cache($question->id, 7, array('a' => '4.4', 'b' => '8.2'));

$qa = $this->updater->convert_question_attempt($quiz, $attempt, $question, $qsession, $qstates);

$expectedqa = (object) array(
            'behaviour' => 'adaptive',
            'questionid' => 17,
            'variant' => 7,
            'maxmark' => 1.0000000,
            'minfraction' => 0,
            'maxfraction' => 1,
            'flagged' => 0,
            'questionsummary' => 'What is 4.4 + 8.2?',
            'rightanswer' => '12.6',
            'responsesummary' => '-3.8',
            'timemodified' => 1305830768,
            'steps' => array(
                0 => (object) array(
                    'sequencenumber' => 0,
                    'state' => 'todo',
                    'fraction' => null,
                    'timecreated' => 1305830744,
                    'userid' => 3,
                    'data' => array('_order' => '26,24,25,27', '_var_a' => '4.4', '_var_b' => '8.2'),
                ),
                1 => (object) array(
                    'sequencenumber' => 1,
                    'state' => 'todo',
                    'fraction' => 0,
                    'timecreated' => 1305830759,
                    'userid' => 3,
                    'data' => array('answer' => '3', '-submit' => 1, '-_try' => 1, '-_rawfraction' => 0),
                ),
                2 => (object) array(
                    'sequencenumber' => 2,
                    'state' => 'todo',
                    'fraction' => 0,
                    'timecreated' => 1305830761,
                    'userid' => 3,
                    'data' => array('answer' => '1', '-submit' => 1, '-_try' => 2, '-_rawfraction' => 0),
                ),
                3 => (object) array(
                    'sequencenumber' => 3,
                    'state' => 'todo',
                    'fraction' => 0,
                    'timecreated' => 1305830764,
                    'userid' => 3,
                    'data' => array('answer' => '0', '-submit' => 1, '-_try' => 3, '-_rawfraction' => 0),
                ),
                4 => (object) array(
                    'sequencenumber' => 4,
                    'state' => 'todo',
                    'fraction' => 0.7,
                    'timecreated' => 1305830766,
                    'userid' => 3,
                    'data' => array('answer' => '2', '-submit' => 1, '-_try' => 4, '-_rawfraction' => 1),
                ),
                5 => (object) array(
                    'sequencenumber' => 5,
                    'state' => 'todo',
                    'fraction' => 0.7,
                    'timecreated' => 1305830768,
                    'userid' => 3,
                    'data' => array('answer' => '1', '-submit' => 1, '-_try' => 5, '-_rawfraction' => 0),
                ),
            ),
        );

$this->compare_qas($expectedqa, $qa);
    }
}