#!/usr/bin/env python
# coding: utf-8

# This notebook was prepared by [Donne Martin](https://github.com/donnemartin). Source and license info is on [GitHub](https://github.com/donnemartin/interactive-coding-challenges).

# # Challenge Notebook

# ## Problem: Implement Fizz Buzz.
# 
# * [Constraints](#Constraints)
# * [Test Cases](#Test-Cases)
# * [Algorithm](#Algorithm)
# * [Code](#Code)
# * [Unit Test](#Unit-Test)
# * [Solution Notebook](#Solution-Notebook)

# ## Constraints
# 
# * What is fizz buzz?
#     * Return the string representation of numbers from 1 to n
#         * Multiples of 3 -> 'Fizz'
#         * Multiples of 5 -> 'Buzz'
#         * Multiples of 3 and 5 -> 'FizzBuzz'
# * Can we assume the inputs are valid?
#     * No
# * Can we assume this fits memory?
#     * Yes

# ## Test Cases
# 
# <pre>
# * None -> Exception
# * < 1 -> Exception
# * 15 ->
# [
#     '1',
#     '2',
#     'Fizz',
#     '4',
#     'Buzz',
#     'Fizz',
#     '7',
#     '8',
#     'Fizz',
#     'Buzz',
#     '11',
#     'Fizz',
#     '13',
#     '14',
#     'FizzBuzz'
# ]
# </pre>

# ## Algorithm
# 
# Refer to the [Solution Notebook](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb).  If you are stuck and need a hint, the solution notebook's algorithm discussion might be a good place to start.

# ## Code

# In[ ]:


class Solution(object):

    def fizz_buzz(self, num):
        # TODO: Implement me
        pass


# ## Unit Test

# **The following unit test is expected to fail until you solve the challenge.**

# In[ ]:


# %load test_fizz_buzz.py
import unittest


class TestFizzBuzz(unittest.TestCase):

    def test_fizz_buzz(self):
        solution = Solution()
        self.assertRaises(TypeError, solution.fizz_buzz, None)
        self.assertRaises(ValueError, solution.fizz_buzz, 0)
        expected = [
            '1',
            '2',
            'Fizz',
            '4',
            'Buzz',
            'Fizz',
            '7',
            '8',
            'Fizz',
            'Buzz',
            '11',
            'Fizz',
            '13',
            '14',
            'FizzBuzz'
        ]
        self.assertEqual(solution.fizz_buzz(15), expected)
        print('Success: test_fizz_buzz')


def main():
    test = TestFizzBuzz()
    test.test_fizz_buzz()


if __name__ == '__main__':
    main()


# ## Solution Notebook
# 
# Review the [Solution Notebook](http://nbviewer.ipython.org/github/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/fizz_buzz/fizz_buzz_solution.ipynb) for a discussion on algorithms and code solutions.