binary-to-text.js

// kata - https://www.codewars.com/kata/5583d268479559400d000064

const binaryToString = (binary) => {
  if (!binary || binary.length % 8 !== 0) return '';
  const splitToBytes = binary.match(/.{1,8}/g);
  return splitToBytes.map((byte) => String.fromCharCode(parseInt(byte, 2))).join('') || '';
};

const Test = require('@codewars/test-compat');
Test.assertEquals(binaryToString(''), '', 'Must handle empty string');
Test.assertEquals(binaryToString('0100100001100101011011000110110001101111'), 'Hello', 'Must handle basic works');
Test.assertEquals(binaryToString('00110001001100000011000100110001'), '1011', 'Must handle numeric characters');
Test.assertEquals(
  binaryToString(
    '0101001101110000011000010111001001101011011100110010000001100110011011000110010101110111001011100010111000100000011001010110110101101111011101000110100101101111011011100111001100100000011100100110000101101110001000000110100001101001011001110110100000100001'
  ),
  'Sparks flew.. emotions ran high!',
  'Must handle special charaters'
);
Test.assertEquals(
  binaryToString(
    '0010000101000000001000110010010000100101010111100010011000101010001010000010100101010001010101110100010101110010011101000111100101010101010010010100111101001100011001000110011001100111011000100110001001101000011011100110110101001001010010110100001001001010010010110100100001001001010101010100111100101000001111110011111000111111001111000111111001111110011111100111111001111110001010010010100000101010001001100010010101011110001110010011100000110111001100010011001100101111001011010010111100101010001011010010101000101111'
  ),
  '!@#$%^&*()QWErtyUIOLdfgbbhnmIKBJKHIUO(?>?<~~~~~)(*&%^98713/-/*-*/',
  'Must handle special charaters'
);