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| -rw-r--r-- | spec/fibonacci_spec.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/spec/fibonacci_spec.rb b/spec/fibonacci_spec.rb new file mode 100644 index 0000000..c47707b --- /dev/null +++ b/spec/fibonacci_spec.rb @@ -0,0 +1,20 @@ +# 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. + +class Fibonacci +end + +describe "problem two" do + subject { Fibonacci.new } + + xit 'returns the sum of the even valued terms' do + items = subject.take_while { |n| n < 4_000_000 }.find_all(&:even?) + result = items.inject(0) { |memo, x| memo + x } + expect(result).to eql(4613732) + end +end |