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# lib/validation_reflection.rb
def remember_validation_metadata(validation_type, *attr_names)
  configuration = attr_names.last.is_a?(::Hash) ? attr_names.pop : {}
  attr_names.flatten.each do |attr_name|
    self.write_inheritable_array :validations,
      [::ActiveRecord::Reflection::MacroReflection.new(validation_type, attr_name.to_sym, configuration, self)]
  end
end

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When I follow "Log in"

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# lib/culerity.rb
def self.run_server
  IO.popen(%{#{jruby_invocation} "#{celerity_invocation}"}, 'r+').extend(ServerCommands)
end				   

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$browser.link(:text, "Log in").click

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1. features/step_definitions/culerity_steps.rb
   $browser = Culerity::RemoteBrowserProxy.new $server, {:browser => :firefox3,
   :javascript_exceptions => true,
   :resynchronize => true,
   :status_code_exceptions => true
   }

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# lib/culerity/remote_browser_object.rb
def method_missing(name, *args, &block)
  send_remote(name, *args, &block)
end

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# lib/culerity/remote_browser_object.rb
def send_remote(name, *args, &blk)
  input = [remote_object_id, %Q{"#{name}"}, *args.map{|a| arg_to_string(a)}]
  serialized_block = ", #{block_to_string(&blk)}" if block_given?
  @io << "[[#{input.join(", ")}]#{serialized_block}]\n"
  process_result @io.gets.to_s.strip
end    

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[remote_object_id, "link", "Log in"]

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# lib/culerity/celerity_server.rb
def initialize(_in, _out)
  ...
  while(true)
    call, block = eval _in.gets.to_s.strip
    ...
  end
end	

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# lib/culerity/celerity_server.rb
def initialize(_in, _out)
  ...
  while(true)
    call, block = eval _in.gets.to_s.strip
    ...
    
    unless call.nil?
      begin
	 result = target(call.first).send call[1], *call[2..-1], &block