virolea

# Navigating
  visit('/projects')
  visit(post_comments_path(post))
  expect(page).to have_current_path(post_comments_path(post))

# Clicking links and buttons
  click_link('id-of-link')
  click_link('Link Text')
  click_button('Save')
  click_on('Link Text') # clicks on either links or buttons

virolea

class Customer
  include Math

  EARTH_RADIUS = 6371 # Earth Radius in km

  attr_accessor :id, :name, :latitude, :longitude

  def initialize(params)
    @id = params["user_id"]
    @name = params["name"]

virolea

def flatten(array)
  return "Input must be an array" if !array.kind_of?(Array)
  array.reduce([]) do |res, el|
    Array === el ? res + flatten(el) : res << el
  end
end