Kata 8/22 Fizz Buzz Tests

require "test/unit"
require 'fizz_buzz'

class FizzBuzzTest < Test::Unit::TestCase

  def test_fizz_buzz
    assert_fizz_buzz("FizzBuzz", -15)
    assert_fizz_buzz("Buzz", -5)
    assert_fizz_buzz("Fizz", -3)
    assert_fizz_buzz("-1", -1)
    assert_fizz_buzz("FizzBuzz", 0)
    assert_fizz_buzz("1", 1)
    assert_fizz_buzz("2", 2)
    assert_fizz_buzz("Fizz", 3)
    assert_fizz_buzz("4", 4)
    assert_fizz_buzz("Buzz", 5)
    assert_fizz_buzz("Fizz", 6)
    assert_fizz_buzz("Buzz", 10)
    assert_fizz_buzz("FizzBuzz", 15)
  end

  def assert_fizz_buzz(exp, val)
    assert_equal(exp, FizzBuzz.fizz(val))
  end
end