Day 1, 2015 spec

floor_finder_spec.rb

describe "floor_finder" do
  it "starts Santa on the ground floor (floor 0)" do
    expect(floor_finder).to eq 0
  end

  it "moves up one floor for '('" do
    expect(floor_finder('(')).to eq 1
  end

  it "moves down one floor for ')'" do
    expect(floor_finder(')')).to eq -1
  end

  it "can parse a set of directions" do
    expect(floor_finder('(())')).to eq 0
    expect(floor_finder('()()')).to eq 0

    expect(floor_finder('(((')).to eq 3
    expect(floor_finder('(()(()(')).to eq 3
    expect(floor_finder('))(((((')).to eq 3

    expect(floor_finder('())')).to eq -1
    expect(floor_finder('))(')).to eq -1

    expect(floor_finder(')))')).to eq -3
    expect(floor_finder(')())())')).to eq -3
  end
end