1. How many methods are in this code?

require 'rubybasics1.rb'

RSpec.configure do |config| config.filter_run_excluding :disabled => true end

describe 'Ruby Basics 1 Part I' do

describe "#sum" do it "should be defined" do expect { sum([1,3,4]) }.not_to raise_error end

it "returns correct sum [20 points]" , points: 20 do expect(sum([1,2,3,4,5])).to be_a_kind_of Fixnum expect(sum([1,2,3,4,5])).to eq(15) expect(sum([1,2,3,4,-5])).to eq(5) expect(sum([1,2,3,4,-5,5,-100])).to eq(-90) end

it "works on the empty array [10 points]" , points: 10 do expect { sum([]) }.not_to raise_error expect(sum([])).to be_zero end end end

describe 'Ruby Basics 1 Part II' do describe "#max_2_sum", :disabled => true do it "should be defined" do expect { max_2_sum([1,2,3]) }.not_to raise_error end it "returns the correct sum [7 points]" , points: 7 do expect(max_2_sum([1,2,3,4,5])).to be_a_kind_of Fixnum expect(max_2_sum([1,-2,-3,-4,-5])).to eq(-1) end it 'works even if 2 largest values are the same [3 points]' , points: 3 do expect(max_2_sum([1,2,3,3])).to eq(6) end it "returns zero if array is empty [10 points]" , points: 10 do expect(max_2_sum([])).to be_zero end it "returns value of the element if just one element [10 points]" , points: 10 do expect(max_2_sum([3])).to eq(3) end end end

describe 'Ruby Basics 1 Part III' do describe "#sum_to_n", :disabled => true do it "should be defined" do expect { sum_to_n?([1,2,3],4) }.not_to raise_error end it "returns true when any two elements sum to the second argument [30 points]" , points: 30 do expect(sum_to_n?([1,2,3,4,5], 5)).to be true # 2 + 3 = 5 expect(sum_to_n?([3,0,5], 5)).to be true # 0 + 5 = 5 expect(sum_to_n?([-1,-2,3,4,5,-8], -3)).to be true # handles negative sum expect(sum_to_n?([-1,-2,3,4,5,-8], 12)).to be false # 3 + 4 + 5 = 12 (not 3 elements) expect(sum_to_n?([-1,-2,3,4,6,-8], 12)).to be false # no two elements that sum end

it "returns false for any single element array [5 points]" , points: 5 do expect(sum_to_n?([0], 0)).to be false expect(sum_to_n?([1], 1)).to be false expect(sum_to_n?([-1], -1)).to be false expect(sum_to_n?([-3], 0)).to be false end it "returns false for an empty array [5 points]" , points: 5 do expect(sum_to_n?([], 0)).to be false expect(sum_to_n?([], 7)).to be false end end end