fizzbuzz.rb

require "test/unit"

class TestFizzBuzz < Test::Unit::TestCase
  def fizzbuzz(x)
    "#{'Fizz' if x % 3 == 0}#{'Buzz' if x % 5 == 0}"
  end

  def test_equal
    assert_equal fizzbuzz(3), "Fizz"
    assert_equal fizzbuzz(50), "Buzz"
    assert_equal fizzbuzz(15), "FizzBuzz"
    assert_equal fizzbuzz(5175), "FizzBuzz"
  end
end