rails--rails/actionpack/test/abstract_controller/abstract_controller_test.rb

require File.join(File.expand_path(File.dirname(__FILE__)), "test_helper")

module AbstractController
  module Testing
  
    # Test basic dispatching.
    # ====
    # * Call process
    # * Test that the response_body is set correctly
    class SimpleController < AbstractController::Base
    end
    
    class Me < SimpleController
      def index
        self.response_body = "Hello world"
        "Something else"
      end      
    end
    
    class TestBasic < ActiveSupport::TestCase
      test "dispatching works" do
        result = Me.process(:index)
        assert_equal "Hello world", result.response_obj[:body]
      end
    end
    
    # Test Render mixin
    # ====
    class RenderingController < AbstractController::Base
      include Renderer

      def _prefix() end

      def render(options = {})
        if options.is_a?(String)
          options = {:_template_name => options}
        end
        
        options[:_prefix] = _prefix
        super
      end

      append_view_path File.expand_path(File.join(File.dirname(__FILE__), "views"))
    end
    
    class Me2 < RenderingController
      def index
        render "index.erb"
      end
      
      def action_with_ivars
        @my_ivar = "Hello"
        render "action_with_ivars.erb"
      end
      
      def naked_render
        render
      end
    end
    
    class TestRenderer < ActiveSupport::TestCase
      test "rendering templates works" do
        result = Me2.process(:index)
        assert_equal "Hello from index.erb", result.response_obj[:body]
      end
      
      test "rendering passes ivars to the view" do
        result = Me2.process(:action_with_ivars)
        assert_equal "Hello from index_with_ivars.erb", result.response_obj[:body]
      end
      
      test "rendering with no template name" do
        result = Me2.process(:naked_render)
        assert_equal "Hello from naked_render.erb", result.response_obj[:body]
      end
    end
    
    # Test rendering with prefixes
    # ====
    # * self._prefix is used when defined
    class PrefixedViews < RenderingController
      private
      def self.prefix
        name.underscore
      end
      
      def _prefix
        self.class.prefix
      end
    end
    
    class Me3 < PrefixedViews
      def index
        render
      end
      
      def formatted
        self.formats = [:html]
        render
      end
    end
    
    class TestPrefixedViews < ActiveSupport::TestCase
      test "templates are located inside their 'prefix' folder" do
        result = Me3.process(:index)
        assert_equal "Hello from me3/index.erb", result.response_obj[:body]
      end

      test "templates included their format" do
        result = Me3.process(:formatted)
        assert_equal "Hello from me3/formatted.html.erb", result.response_obj[:body]
      end
    end
    
    # Test rendering with layouts
    # ====
    # self._layout is used when defined
    class WithLayouts < PrefixedViews
      include Layouts
      
      private
      def self.layout(formats)
        begin
          view_paths.find_by_parts(name.underscore, formats, "layouts")
        rescue ActionView::MissingTemplate
          begin
            view_paths.find_by_parts("application", formats, "layouts")
          rescue ActionView::MissingTemplate
          end
        end
      end
      
      def _layout
        self.class.layout(formats)
      end      
      
      def render_to_string(options = {})
        options[:_layout] = options[:layout] || _layout
        super
      end  
    end
    
    class Me4 < WithLayouts
      def index
        render
      end
    end
    
    class Me5 < WithLayouts
      def index
        render
      end
    end
    
    class TestLayouts < ActiveSupport::TestCase
      test "layouts are included" do
        result = Me4.process(:index)
        assert_equal "Me4 Enter : Hello from me4/index.erb : Exit", result.response_obj[:body]
      end
      
      test "it can fall back to the application layout" do
        result = Me5.process(:index)
        assert_equal "Application Enter : Hello from me5/index.erb : Exit", result.response_obj[:body]        
      end
    end
    
    # respond_to_action?(action_name)
    # ====
    # * A method can be used as an action only if this method
    #   returns true when passed the method name as an argument
    # * Defaults to true in AbstractController
    class DefaultRespondToActionController < AbstractController::Base
      def index() self.response_body = "success" end
    end
    
    class ActionMissingRespondToActionController < AbstractController::Base
      # No actions
    private
      def action_missing(action_name)
        self.response_body = "success"
      end
    end
    
    class RespondToActionController < AbstractController::Base;
      def index() self.response_body = "success" end
        
      def fail()  self.response_body = "fail"    end
        
    private
      
      def respond_to_action?(action_name)
        action_name != :fail
      end
      
    end
    
    class TestRespondToAction < ActiveSupport::TestCase
      
      def assert_dispatch(klass, body = "success", action = :index)
        response = klass.process(action).response_obj[:body]
        assert_equal body, response
      end
      
      test "an arbitrary method is available as an action by default" do
        assert_dispatch DefaultRespondToActionController, "success", :index
      end
      
      test "raises ActionNotFound when method does not exist and action_missing is not defined" do
        assert_raise(ActionNotFound) { DefaultRespondToActionController.process(:fail) }
      end
      
      test "dispatches to action_missing when method does not exist and action_missing is defined" do
        assert_dispatch ActionMissingRespondToActionController, "success", :ohai
      end
      
      test "a method is available as an action if respond_to_action? returns true" do
        assert_dispatch RespondToActionController, "success", :index
      end
      
      test "raises ActionNotFound if method is defined but respond_to_action? returns false" do
        assert_raise(ActionNotFound) { RespondToActionController.process(:fail) }
      end
    end
    
  end
end