sellquiz/src/test-lowlevel-api.ts

An open source domain-specific language for online assessment

/******************************************************************************
 * SELL - SIMPLE E-LEARNING LANGUAGE                                          *
 *                                                                            *
 * Copyright (c) 2019-2021 TH Köln                                            *
 * Author: Andreas Schwenk, contact@compiler-construction.com                 *
 *                                                                            *
 * Partly funded by: Digitale Hochschule NRW                                  *
 * https://www.dh.nrw/kooperationen/hm4mint.nrw-31                            *
 *                                                                            *
 * GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007                         *
 *                                                                            *
 * This library is licensed as described in LICENSE, which you should have    *
 * received as part of this distribution.                                     *
 *                                                                            *
 * This software is distributed on "AS IS" basis, WITHOUT WARRENTY OF ANY     *
 * KIND, either impressed or implied.                                         *
 ******************************************************************************/

// This file demonstrates the low-level API for use in Node.js.

// PLEASE NOTE THAT THE LOW LEVEL API OF SELLQUIZ IS WORK-IN-PROGRESS
// AND SOME QUESTION TYPES ARE NOT YET IMPLEMENTED.

import * as sellquiz from './index.js';

// ----- (a) create a question -----

sellquiz.setLanguage("en");
sellquiz.setGenerateInputFieldHtmlCode(false);

let questionStr = `Addition
    x := 3
    y := 4
Calculate $x + y = #(x + y)$.
`;

let qId = sellquiz.createQuestion(questionStr);
if(qId < 0) {
    console.log("Failed to import question. Error log:");
    console.log(sellquiz.getErrorLog());
    process.exit(-1);
}

let qTitle = sellquiz.getQuestionTitle(qId);
let qBody = sellquiz.getQuestionBody(qId);

console.log("QUESTION:")
console.log("- title HTML code:\n" + qTitle);
console.log("- body HTML code:\n" + qBody);

let qBackup = sellquiz.backupQuestion(qId);
console.log("BACKUP OF QUESTION:\n" + qBackup);


// ----- (b) restore a question -----

sellquiz.reset();

qId = sellquiz.createQuestionFromBackup(qBackup);
let qInputElements = sellquiz.getQuestionInputFields(qId);
console.log(qInputElements)
let solutionVariableID = qInputElements[0]["solution_variable_id"];
if(sellquiz.setStudentAnswerManually(qId, solutionVariableID, "7") == false) {
    console.log("failed to set student answer");
    process.exit(-1);
}
sellquiz.evaluateQuestion(qId);

qBackup = sellquiz.backupQuestion(qId);
console.log("BACKUP OF QUESTION:\n" + qBackup);