days_until_xmas.rb

require 'date'

def days_until_xmas(date = Date.today)
  # TODO: calculate the number of days
  # until Christmas
  current_year = Time.now.year
  if (Date.new(current_year, 12, 25) - date).to_i < 0
    (Date.new(current_year + 1, 12, 25) - date).to_i
  else
    (Date.new(current_year, 12, 25) - date).to_i
  end
end

# We want to display "true" to test
# our method (TDD)
# 182
puts days_until_xmas == 182
puts days_until_xmas(Date.new(2018, 12, 24)) == 1
puts days_until_xmas(Date.new(2018, 12, 26)) == 364