@alu0101051420/constant-folding/test/test.js

Constant Folding javascript code

const constantFolding = require('../src/constant-folding');
const should = require('chai').should();

const binaryExamples = [
  { "input": "a=2*3;", "result": "a = 6;" },
  { "input": "a=2+3;", "result": "a = 5;" },
  { "input": "a=2/3;", "result": "a = 0.6666666666666666;" }
]

const arrayExamples = [
  { "input": `['a', 'b', 'c'].concat(['d', 'e'], 'f', 'g', ['h']);`, "result": "[\n    a,\n    b,\n    c,\n    d,\n    e,\n    f,\n    g,\n    h\n];" },
  { "input": `["a", "b", "c"].join();`, "result": "a, b, c;" },
  { "input": `["a", "b", "c"].join('&');`, "result": "a & b & c;" },
  { "input": `[1, 2, 3].length;`, "result": "3;" },
  { "input": `[1, 2, 3][2 - 1];`, "result": "2;" },
  { "input": `[1, 2, 3].shift();`, "result": "1;" },
  { "input": `[1, 2, 3].slice(0, 1 + 1); `, "result": "[\n    1,\n    2\n];" },
  { "input": `['a', 'b', 'c'].pop(); `, "result": "c;" },
  { "input": `['a', 'b', 'c'].reverse(); `, "result": "[\n    c,\n    b,\n    a\n];" },
]

it('constantFolding module importing correctly', () => {
  constantFolding.should.not.equal(undefined);
})

describe('constantFolding binary operation tests', () => {
  binaryExamples.forEach((example) => {
    it(example.input, () => {
      constantFolding(example.input).should.equal(example.result);
    })
  })
});

describe('constantFolding array operation tests', () => {
  arrayExamples.forEach((example) => {
    it(example.input, () => {
      constantFolding(example.input).should.equal(example.result);
    })
  })
});