rails--rails/actionview/test/actionpack/controller/layout_test.rb

require "abstract_unit"
require "active_support/core_ext/array/extract_options"

# The view_paths array must be set on Base and not LayoutTest so that LayoutTest's inherited
# method has access to the view_paths array when looking for a layout to automatically assign.
old_load_paths = ActionController::Base.view_paths

ActionController::Base.view_paths = [ File.dirname(__FILE__) + "/../../fixtures/actionpack/layout_tests/" ]

class LayoutTest < ActionController::Base
  def self.controller_path; "views" end
  def self._implied_layout_name; to_s.underscore.gsub(/_controller$/, "") ; end
  self.view_paths = ActionController::Base.view_paths.dup
end

module TemplateHandlerHelper
  def with_template_handler(*extensions, handler)
    ActionView::Template.register_template_handler(*extensions, handler)
    yield
  ensure
    ActionView::Template.unregister_template_handler(*extensions)
  end
end

# Restore view_paths to previous value
ActionController::Base.view_paths = old_load_paths

class ProductController < LayoutTest
end

class ItemController < LayoutTest
end

class ThirdPartyTemplateLibraryController < LayoutTest
end

module ControllerNameSpace
end

class ControllerNameSpace::NestedController < LayoutTest
end

class MultipleExtensions < LayoutTest
end

class LayoutAutoDiscoveryTest < ActionController::TestCase
  include TemplateHandlerHelper

  def setup
    super
    @request.host = "www.nextangle.com"
  end

  def test_application_layout_is_default_when_no_controller_match
    @controller = ProductController.new
    get :hello
    assert_equal "layout_test.erb hello.erb", @response.body
  end

  def test_controller_name_layout_name_match
    @controller = ItemController.new
    get :hello
    assert_equal "item.erb hello.erb", @response.body
  end

  def test_third_party_template_library_auto_discovers_layout
    with_template_handler :mab, lambda { |template| template.source.inspect } do
      @controller = ThirdPartyTemplateLibraryController.new
      get :hello
      assert_response :success
      assert_equal "layouts/third_party_template_library.mab", @response.body
    end
  end

  def test_namespaced_controllers_auto_detect_layouts1
    @controller = ControllerNameSpace::NestedController.new
    get :hello
    assert_equal "controller_name_space/nested.erb hello.erb", @response.body
  end

  def test_namespaced_controllers_auto_detect_layouts2
    @controller = MultipleExtensions.new
    get :hello
    assert_equal "multiple_extensions.html.erb hello.erb", @response.body.strip
  end
end

class DefaultLayoutController < LayoutTest
end

class StreamingLayoutController < LayoutTest
  def render(*args)
    options = args.extract_options!
    super(*args, options.merge(stream: true))
  end
end

class AbsolutePathLayoutController < LayoutTest
  layout File.expand_path(File.expand_path(__FILE__) + "/../../../fixtures/actionpack/layout_tests/layouts/layout_test")
end

class HasOwnLayoutController < LayoutTest
  layout "item"
end

class HasNilLayoutSymbol < LayoutTest
  layout :nilz

  def nilz
    nil
  end
end

class HasNilLayoutProc < LayoutTest
  layout proc { nil }
end

class PrependsViewPathController < LayoutTest
  def hello
    prepend_view_path File.dirname(__FILE__) + "/../../fixtures/actionpack/layout_tests/alt/"
    render layout: "alt"
  end
end

class OnlyLayoutController < LayoutTest
  layout "item", only: "hello"
end

class ExceptLayoutController < LayoutTest
  layout "item", except: "goodbye"
end

class SetsLayoutInRenderController < LayoutTest
  def hello
    render layout: "third_party_template_library"
  end
end

class RendersNoLayoutController < LayoutTest
  def hello
    render layout: false
  end
end

class LayoutSetInResponseTest < ActionController::TestCase
  include ActionView::Template::Handlers
  include TemplateHandlerHelper

  def test_layout_set_when_using_default_layout
    @controller = DefaultLayoutController.new
    get :hello
    assert_includes @response.body, "layout_test.erb"
  end

  def test_layout_set_when_using_streaming_layout
    @controller = StreamingLayoutController.new
    get :hello
    assert_includes @response.body, "layout_test.erb"
  end

  def test_layout_set_when_set_in_controller
    @controller = HasOwnLayoutController.new
    get :hello
    assert_includes @response.body, "item.erb"
  end

  def test_layout_symbol_set_in_controller_returning_nil_falls_back_to_default
    @controller = HasNilLayoutSymbol.new
    get :hello
    assert_includes @response.body, "layout_test.erb"
  end

  def test_layout_proc_set_in_controller_returning_nil_falls_back_to_default
    @controller = HasNilLayoutProc.new
    get :hello
    assert_includes @response.body, "layout_test.erb"
  end

  def test_layout_only_exception_when_included
    @controller = OnlyLayoutController.new
    get :hello
    assert_includes @response.body, "item.erb"
  end

  def test_layout_only_exception_when_excepted
    @controller = OnlyLayoutController.new
    get :goodbye
    assert_not_includes @response.body, "item.erb"
  end

  def test_layout_except_exception_when_included
    @controller = ExceptLayoutController.new
    get :hello
    assert_includes @response.body, "item.erb"
  end

  def test_layout_except_exception_when_excepted
    @controller = ExceptLayoutController.new
    get :goodbye
    assert_not_includes @response.body, "item.erb"
  end

  def test_layout_set_when_using_render
    with_template_handler :mab, lambda { |template| template.source.inspect } do
      @controller = SetsLayoutInRenderController.new
      get :hello
      assert_includes @response.body, "layouts/third_party_template_library.mab"
    end
  end

  def test_layout_is_not_set_when_none_rendered
    @controller = RendersNoLayoutController.new
    get :hello
    assert_equal "hello.erb", @response.body
  end

  def test_layout_is_picked_from_the_controller_instances_view_path
    @controller = PrependsViewPathController.new
    get :hello
    assert_includes @response.body, "alt.erb"
  end

  def test_absolute_pathed_layout
    @controller = AbsolutePathLayoutController.new
    get :hello
    assert_equal "layout_test.erb hello.erb", @response.body.strip
  end
end

class SetsNonExistentLayoutFile < LayoutTest
  layout "nofile"
end

class LayoutExceptionRaisedTest < ActionController::TestCase
  def test_exception_raised_when_layout_file_not_found
    @controller = SetsNonExistentLayoutFile.new
    assert_raise(ActionView::MissingTemplate) { get :hello }
  end
end

class LayoutStatusIsRendered < LayoutTest
  def hello
    render status: 401
  end
end

class LayoutStatusIsRenderedTest < ActionController::TestCase
  def test_layout_status_is_rendered
    @controller = LayoutStatusIsRendered.new
    get :hello
    assert_response 401
  end
end

unless Gem.win_platform?
  class LayoutSymlinkedTest < LayoutTest
    layout "symlinked/symlinked_layout"
  end

  class LayoutSymlinkedIsRenderedTest < ActionController::TestCase
    def test_symlinked_layout_is_rendered
      @controller = LayoutSymlinkedTest.new
      get :hello
      assert_response 200
      assert_includes @response.body, "This is my layout"
    end
  end
end