functional test helper to automate basic CRUD functions (See related posts)

#expects a format like this:
	#test_required_attributes_in_controller User,
  	#					{:params=>{:id=>1,:user=>{}},:session=>{:user=>{}}},
	#					[:create, :update],
	#					:first_name, :last_name, :username, :email_address, :password

    def test_required_attributes_in_controller( model, options, actions,*required_fields )
    	
		sym = model.to_s.downcase.to_sym
		for field in required_fields
      		options[:params][sym][field] = ''
    	end
		
      	actions.each do |action|
        	self.class_eval do
          		define_method("test_#{action}_method_requires_fields") do
            		assert_nothing_raised do
						post action, options[:params],options[:session]
					end
            		for field in required_fields
      					assert !assigns(sym).errors[field].empty? unless options[:params][sym][field] == ''
    				end
    				assert !assigns.empty?,"This method requires specific parameters, yet no errors were created with them missing"
          		end
        	end
      	end
	end
	
	  #Expects format like this: 
	  #   test_required_unique_attributes_in_controller User,
	  #							{:params=>{:id=>1,:user=>{}},:session=>{:user=>{}}},
	  #							[:create, :update],
	  #							:username, :email_address
	  #
		
    def test_required_unique_attributes_in_controller( model, options, actions,*required_fields )
    	sym = model.to_s.downcase.to_sym
		for field in required_fields
      		options[:params][sym][field] = ''
    	end
		
      	actions.each do |action|
        	self.class_eval do
          		define_method("test_#{action}_method_requires_unique_fields") do
            		assert_nothing_raised do
						post action, options[:params],options[:session]
					end
            		for field in required_fields
      					assert !assigns(sym).errors[field].empty? unless options[:params][sym][field] == ''
    				end
    				assert !assigns.empty?,"This method fails without unique parameters, yet no errors were created"
          		end
        	end
      	end
    end
	
	#Expects format like this:
	# test_required_url_parameters_in_controller 
	#                                           User,
	#                                           {:params=>{},:session=>{:user=>{}}},
	#                                           :edit, :destroy, :show, :update	
	
    def test_required_url_parameters_in_controller(model, options, *actions)
      sym = model.to_s.downcase.to_sym
      actions.each do |action|
        self.class_eval do
          define_method("test_#{action}_method_requires_url_parameters") do
            post action, options[:params],options[:session]
            assert_response :redirect
            assert_nil assigns(sym),"This method requires a url parameter, yet the controller still created an object."
          end
        end
      end
    end
	
  end