Calabash iOS step that verifies that all cells have been deleted after swiping

swipe_to_delete_and_check_cell.rb

def check_cell(prefix)
  if @final_count[0] == 1
    final_cell = query "TableViewCell index:0"
    if final_cell.first["class"] == "UITableViewCell"
      sleep(STEP_PAUSE)
    else	
      screenshot_and_raise "#{prefix} of the cells were deleted!"
    end
  else
    screenshot_and_raise "#{prefix} of the cells were deleted!"
  end
end

Then /^I swipe to delete all cells in "([^\"]*)"$/ do |orientation|
  total_rows = query("tableView index:0",numberOfRowsInSection:0)
  end_of_range = total_rows[0] - 1
  (0..end_of_range).each do 
    scroll_to_row "tableView index:0", 0
    sleep(STEP_PAUSE)
    macro %Q[I swipe on cell number 1 in "#{orientation}"]
    sleep(STEP_PAUSE)
    touch "TableViewCellDeleteConfirmationControl"
  end
  @final_count = query("tableView index:0",numberOfRowsInSection:0)
  if @final_count[0] == total_rows[0]
    check_cell("None")
  else
    check_cell("Only some")
  end
end

The macro in line 20 is defined here: http://gist.github.com/3298026

You can read more info about this step definition on my blog: http://www.moncefbelyamani.com/a-calabash-custom-step-to-swipe-to-delete-all-cells-in-a-table-view/