Kata #1 (ruby) Webcast Agilityfeat. https://plus.google.com/114642677983172790710/posts/erAyjcXgkLp

fizzbuzz.rb

def fizzbuzz(number)
    if number == 0
        return '0'
    elsif number % 15 == 0
        return 'fizzbuzz'
    elsif number % 3 == 0:
        return 'fizz'
    elsif number % 5 == 0:
        return 'buzz'
    end

    return number.to_s
end

test_fizzbuzz.rb

require 'fizzbuzz'
require 'test/unit'

class TC_FizzBuzz < Test::Unit::TestCase
    def test_classify_as_is
        assert_equal('0', fizzbuzz(0))
        assert_equal('1', fizzbuzz(1))
    end

    def test_classify_as_fizz
        assert_equal('fizz', fizzbuzz(3))
        assert_equal('fizz', fizzbuzz(6))
    end

    def test_classify_as_buzz
        assert_equal('buzz', fizzbuzz(10))
        assert_equal('buzz', fizzbuzz(5))
    end

    def test_classify_as_fizzbuzz
        assert_equal('fizzbuzz', fizzbuzz(30))
        assert_equal('fizzbuzz', fizzbuzz(15))
    end
end