tdd sample with fizzbuzz

fizzbuzz.js

DEBUG = TEST = false;

function fizzbuzz(n) {
  if(n % 15 === 0) return "FizzBuzz";
  if(n % 3 === 0) return "Fizz";
  if(n % 5 === 0) return "Buzz";
  return n;
}

function main() {
  for(var i = 0; i < 15; i++) {
    var fbz = fizzbuzz(i + 1);
    console.log(fbz);
  }
}

main();


if(DEBUG || TEST) {
  var assert = require('assert');
  assert(fizzbuzz);

  assert.equal(fizzbuzz(1), 1);
  assert.equal(fizzbuzz(3), "Fizz");
  assert.equal(fizzbuzz(5), "Buzz");
  assert.equal(fizzbuzz(15), "FizzBuzz");

  assert(main);
  (function() {
    var result = [];
    var log = console.log;
    console.log = function(v) {
      result.push(v);
    }
    main();
    assert.equal(result.length, 15);
    assert.equal(result[0], 1);
    assert.equal(result[14], "FizzBuzz");
    console.log = log;
  })();
}