cb_screen_models.rb

# Pages can be defined like so:
LoginScreen < ScreenModel
  element :email, "et_email"
  element :password, "et_pw"
  element :login_button, "btn_login"
end

# and called in step definitions like so
Then(/^I enter my email and password and press the login button$/) do
  LoginScreen.email.type("foo@bar.com")
  LoginScreen.password.type("foobar")
  LoginScreen.login_button.press
end

require 'calabash-android/operations'

module ScreenModels

  # analogs of Android views for running Calabash tests
  # test view classes implement basic test actions - press, wait_for, is_visible, etc
  # requires environment var ADB_DEVICE_ARG

  class View

    # get the performAction method from Calabash
    # which does the touchy feely bits
    include Calabash::Android::Operations

    def initialize(viewid, array_index=-1)
      # to support multiple instances of the view on a page -->
      # if the view will appear more than once, add an array_index;
      # otherwise, since Ruby will return nil for any uninitialized attribute,
      # use -1 to indicate there is no indexing for this view
      @index = array_index
      @id = viewid
    end

    def wait_for
      proceed = false
      tries = 0
      while not proceed do
        begin
          performAction('wait_for_view_by_id', @id)
          if tries >= 1 # if we've timed out, make a note if we've recovered
            puts "view found: #{@id}"
          end
          proceed = true
        rescue RuntimeError
          # Robotium will time out after 10 seconds, then throw an error
          # catch that error up to three times, then give up
          tries += 1
          puts "timed out waiting for #{@id}, #{tries} of 3..."
          if tries == 3
            raise RuntimeError, "timed out waiting for view #{@id}"
            proceed = true
          end
        end
      end
    end

    def is_visible
      performAction('assert_view_property', @id, "visibility", "visible")
    end
  end

  class TextView < View
    def get_text
      result_hash = performAction("get_text_by_id", @id)
      return result_hash["message"]
    end
    alias_method :text, :get_text
    def should_equal(s)
      get_text == s
    end
    def number
      #get only the numericals
      num = get_text.gsub(/\D/, '')
      num.to_i
    end
  end

  class EditText < View
    def type(text)
      performAction("enter_text_into_id_field", text, @id)
    end
  end

  class Button < View
    def touch(text=nil)
      if text
        performAction('click_on_text', text)
      else
        wait_for
        performAction('click_on_view_by_id', @id)
      end
    end
    alias_method :press, :touch
  end

  class ScreenModel
    extend Calabash::Android::Operations

    def self.element(element_name, element_view_type, android_id)
      class_eval <<-CODE
        @@#{element_name} = #{element_view_type}.new(android_id)
          def self.#{element_name}
          @@#{element_name}
        end
      CODE
    end

    def self.logout
      # globally accessible logout method
      sleep 1
      performAction('press_menu')
      performAction('click_on_text', 'Logout')
    end

    def self.scroll_down
      performAction('scroll_down')
    end

    def self.scroll_up
      performAction('scroll_down')
    end

    def self.type(text)
      # a type method outside of Calabash that uses adb shell input text
      # when you need to force the issue
      if text.match(" ") != nil
        raise ArgumentError.new("'adb shell input text' doesn't support whitespace")
      else
        `adb -s #{ENV["ADB_DEVICE_ARG"]} shell input text #{text}`
      end
    end
  end

end