simple-js-test-framework.js

const _ = require('lodash');

const log = {
  describe(str) {
    console.log(`describe: ${str}`);
  },

  it(str) {
    console.log(`\t it ${str}`);
  },

  assertEquals(str) {
    console.log(`\t\tResult: ${str}`);
  },

  error(str) {
    console.log(`\t\tResult: ${str}`);
  },
};

function add(a, b) {
  return a + b;
}

test();

function test() {
  assertEquals(2, add(1, 1));
}

function describe(description, fn) {
  log.describe(description);
  fn();
}

function it(sentence, fn) {
  log.it(sentence);
  fn();
}

function assertEquals(expected, actual) {
  if (_.isEqual(expected, actual)) {
    log.assertEquals('Passed');
  } else {
    log.error(`${JSON.stringify(actual)} is not expected as ${JSON.stringify(expected)}`);
  }
}