FizzBuzz Mob Programming Workshop

fizzbuzz-specs.js

'use strict';

const fizzBuzz = (inputNumber) => {
  
  let returnVal = '';
  
    if (inputNumber % 3 === 0) {
      returnVal += 'Fizz';
    } 
    
    if(inputNumber % 5 === 0) {
      returnVal += 'Buzz';
    }
  
    return returnVal;
  
};

// 1 -> ''
// 2 -> ''
// 3 -> 'Fizz'

describe('FizzBuzz', () => { 
  
  it('1 returns nothing', () => {
    expect(fizzBuzz(1)).toEqual('');
  });
  
  it('2 returns nothing', () => {
    expect(fizzBuzz(2)).toEqual('');
  });
  
  it('3 returns Fizz', () => {
    expect(fizzBuzz(3)).toEqual('Fizz');
  });
  
  it('5 returns Buzz', () => {
    expect(fizzBuzz(5)).toEqual('Buzz');
  });
  
  it('15 returns FizzBuzz', () => {
    expect(fizzBuzz(15)).toEqual('FizzBuzz');
  });
  
  it('contains Fizz if it is divisible by 3', () => {
    expect(fizzBuzz(6)).toEqual('Fizz');
    expect(fizzBuzz(9)).toEqual('Fizz');
    expect(fizzBuzz(12)).toEqual('Fizz');
    expect(fizzBuzz(15)).toContain('Fizz');
    expect(fizzBuzz(18)).toEqual('Fizz');
  });
  
  it('30 returns FizzBuzz', () => {
    expect(fizzBuzz(30)).toEqual('FizzBuzz');
  });

  it('10 returns Buzz', () => {
    expect(fizzBuzz(10)).toEqual('Buzz');
  });

});