fizzbuzz_naked_spec.rb

describe FizzBuzz, "#calculate" do
  it "returns 'Fizz' for all multiples of 3" 
  it "returns 'Buzz' for all multiples of 5"
  it "returns 'FizzBuzz' for all multiples of 3 and 5" 
  it "returns the passed number if not a multiple of 3 or 5"
end

fizzbuzz_with_spec.rb

class FizzBuzz
  def calculate(n)
    if n % 3 == 0 and n % 5 == 0
      "FizzBuzz"
    elsif n % 3 == 0
      "Fizz"
    elsif n % 5 == 0
      "Buzz"
    else
      n
    end
  end
end

describe FizzBuzz, "#calculate" do
  let(:fb) { FizzBuzz.new }
  
  it "returns 'Fizz' for all multiples of 3" do
    fb.calculate(3).should == "Fizz"
  end
  it "returns 'Buzz' for all multiples of 5" do
    fb.calculate(5).should == "Buzz"
  end
  it "returns 'FizzBuzz' for all multiples of 3 and 5" do
    fb.calculate(15).should == "FizzBuzz"
  end
  it "returns the passed number if not a multiple of 3 or 5" do
    fb.calculate(77).should == 77
  end
end

output

Pending:
  FizzBuzz#calculate returns 'Fizz' for all multiples of 3
    # Not Yet Implemented
    # ./fizzbuzz_spec.rb:16
  FizzBuzz#calculate returns 'Buzz' for all multiples of 5
    # Not Yet Implemented
    # ./fizzbuzz_spec.rb:17
  FizzBuzz#calculate returns 'FizzBuzz' for all multiples of 3 and 5
    # Not Yet Implemented
    # ./fizzbuzz_spec.rb:18
  FizzBuzz#calculate returns the passed number if not a multiple of 3 or 5
    # Not Yet Implemented
    # ./fizzbuzz_spec.rb:19

Finished in 0.00061 seconds
4 examples, 0 failures, 4 pending