lua_to_cpls/test/generation.spec.js

A tool capable of compiling a subset of Lua to Please lang compiled files

// @ts-check
/**
 * @description A file with the tests for the code generation
 * @author Daniel del Castillo de la Rosa <alu0101225548@ull.edu.es>
 * @since 24/05/2021
 */

'use strict';

const should = require('chai').should();
const {convertToCompiledPlease} = require('../src/parser.js');
const fs = require('fs');

const monkeyPatching = {};
const saveMonkeyPatching = () => {
    Object.keys(Object.prototype).forEach((key) => {
      monkeyPatching[key] = Object.prototype[key];
      delete Object.prototype[key];
    });
};

const restoreMonkeyPatching = () => {
    Object.keys(monkeyPatching).forEach((key) => {
      Object.prototype[key] = monkeyPatching[key];
    });
};

describe('Code generation', () => {
  const runTest = (testName) => {
    saveMonkeyPatching();
    const actual = JSON.stringify(convertToCompiledPlease(
        fs.readFileSync('test/lua/' + testName + '.lua', {encoding: 'utf8'}),
    ), null, 2).replace(/\r/g, '');
    restoreMonkeyPatching();
    const expected = fs.readFileSync('test/cpls/' + testName + '.cpls', {encoding: 'utf8'});
    actual.should.eql(expected.replace(/\r/g, ''));
  };

  const testList = [
    'declaration',
    'assign',
    'complex-operations',
    'boolean-operations',
    'while',
    'branches',
    'array',
    'for',
    'field-access',
    'function',
  ];

  testList.forEach((test) => {
    it(test, () => {
      runTest(test);
    });
  });
});