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Commit 63d0550

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Implement a solution for fizzbuzz problem, write tests
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‎05_fizzbuzz/index.js

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// --- Directions
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// Write a program that console logs the numbers
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// from 1 to n. But for multiples of three print
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// "fizz" instead of the number and for the multiples
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// of five print "buzz". For numbers which are multiples
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// of both three and five print "fizzbuzz".
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// --- Example
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// fizzBuzz(5);
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// 1
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// 2
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// fizz
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// 4
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// buzz
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function fizzBuzz(n) {
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for (let i = 1; i <= n; i++) {
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// Is the number multiple of 3 and 5?
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if(i % 3 === 0 && i % 5 === 0) {
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console.log('fizzbuzz');
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// Is the number multiple of 3?
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} else if (i % 3 === 0) {
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console.log('fizz');
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// Is the number multiple of 5?
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} else if (i % 5 === 0) {
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console.log('buzz');
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} else {
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console.log(i);
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}
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}
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}
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module.exports = fizzBuzz;

‎05_fizzbuzz/test.js

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const fizzBuzz = require('./index');
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test('fizzBuzz function is defined', () => {
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expect(fizzBuzz).toBeDefined();
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});
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test('Calling fizzbuzz with `5` prints out 5 statements', () => {
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fizzBuzz(5);
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expect(console.log.mock.calls.length).toEqual(5);
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});
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test('Calling fizzbuzz with 15 prints out the correct values', () => {
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fizzBuzz(15);
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expect(console.log.mock.calls[0][0]).toEqual(1);
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expect(console.log.mock.calls[1][0]).toEqual(2);
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expect(console.log.mock.calls[2][0]).toEqual('fizz');
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expect(console.log.mock.calls[3][0]).toEqual(4);
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expect(console.log.mock.calls[4][0]).toEqual('buzz');
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expect(console.log.mock.calls[5][0]).toEqual('fizz');
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expect(console.log.mock.calls[6][0]).toEqual(7);
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expect(console.log.mock.calls[7][0]).toEqual(8);
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expect(console.log.mock.calls[8][0]).toEqual('fizz');
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expect(console.log.mock.calls[9][0]).toEqual('buzz');
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expect(console.log.mock.calls[10][0]).toEqual(11);
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expect(console.log.mock.calls[11][0]).toEqual('fizz');
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expect(console.log.mock.calls[12][0]).toEqual(13);
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expect(console.log.mock.calls[13][0]).toEqual(14);
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expect(console.log.mock.calls[14][0]).toEqual('fizzbuzz');
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});
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beforeEach(() => {
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jest.spyOn(console, 'log');
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});
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afterEach(() => {
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console.log.mockRestore();
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});

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