Made Code Dojo 3: Even Fibonacci Number

README.txt

FAILED

http://projecteuler.net/problem=2

Each new term in the Fibonacci sequence is generated by adding the previous two terms.
By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

fibonaaci.rb

require 'rspec'
require 'fibonacci.rb'

describe FibonacciCalculator do
  before(:each) do
    described_class.new
  end

  describe ".sequence" do
    it "should return all numbers in the fibonacci sequence below twenty one" do
     described_class.sequence(21).should eq([0,1,1,2,3,5,8,13])
    end

    it "should raise an error if a negative number is passed in" do
      expect { @calc.sequence(-1) }.to raise_error InvalidArgumentException
    end

    it "should raise an error if a negative number is passed in" do
      expect { @calc.sequence("a") }.to raise_error InvalidArgumentException
    end

    it "should return all numbers in the fibonacci sequence below ninety" do
      described_class.new.sequence(90).should eq([0,1,1,2,3,5,8,13,21,34,55,89])
    end

    it "should return all numbers in the fibonacci sequence below eighty nine" do
      described_class.new.sequence(89).should eq([0,1,1,2,3,5,8,13,21,34,55])
    end
  end

  describe ".sequence_even" do
    it "should return all even numbers in the sequence" do
      @calc.sequence_even(90).should eq([0,2,8,34])
    end
  end

  describe ".product" do
    it "should return the product of all even numbers" do
      @calc.product_even(90).should eq(44)
      @calc.product_even(21).should eq(10)
    end
  end
end

fibonacci_spec.rb

require 'rspec'
require 'fibonacci.rb'

describe FibonacciCalculator do
  before(:each) do
    described_class.new
  end

  describe ".sequence" do
    it "should return all numbers in the fibonacci sequence below twenty one" do
     described_class.new.new(21)sequence(21).should eq([0,1,1,2,3,5,8,13])
    end

    it "should raise an error if a negative number is passed in" do
      expect { @calc.sequence(-1) }.to raise_error InvalidArgumentException
    end

    it "should raise an error if a negative number is passed in" do
      expect { @calc.sequence("a") }.to raise_error InvalidArgumentException
    end

    it "should return all numbers in the fibonacci sequence below ninety" do
      described_class.new.sequence(90).should eq([0,1,1,2,3,5,8,13,21,34,55,89])
    end

    it "should return all numbers in the fibonacci sequence below eighty nine" do
      described_class.new.sequence(89).should eq([0,1,1,2,3,5,8,13,21,34,55])
    end
  end

  describe ".sequence_even" do
    it "should return all even numbers in the sequence" do
      @calc.sequence_even(90).should eq([0,2,8,34])
    end
  end

  describe ".product" do
    it "should return the product of all even numbers" do
      @calc.product_even(90).should eq(44)
      @calc.product_even(21).should eq(10)
    end
  end
end