rails--rails/actionpack/test/controller/renderer_test.rb

require "abstract_unit"

class RendererTest < ActiveSupport::TestCase
  test "action controller base has a renderer" do
    assert ActionController::Base.renderer
  end

  test "creating with a controller" do
    controller = CommentsController
    renderer   = ActionController::Renderer.for controller

    assert_equal controller, renderer.controller
  end

  test "creating from a controller" do
    controller = AccountsController
    renderer   = controller.renderer

    assert_equal controller, renderer.controller
  end

  test "rendering with a class renderer" do
    renderer = ApplicationController.renderer
    content  = renderer.render template: "ruby_template"

    assert_equal "Hello from Ruby code", content
  end

  test "rendering with an instance renderer" do
    renderer = ApplicationController.renderer.new
    content  = renderer.render file: "test/hello_world"

    assert_equal "Hello world!", content
  end

  test "rendering with a controller class" do
    assert_equal "Hello world!", ApplicationController.render("test/hello_world")
  end

  test "rendering with locals" do
    renderer = ApplicationController.renderer
    content  = renderer.render template: "test/render_file_with_locals",
                               locals: { secret: "bar" }

    assert_equal "The secret is bar\n", content
  end

  test "rendering with assigns" do
    renderer = ApplicationController.renderer
    content  = renderer.render template: "test/render_file_with_ivar",
                               assigns: { secret: "foo" }

    assert_equal "The secret is foo\n", content
  end

  test "rendering with custom env" do
    renderer = ApplicationController.renderer.new method: "post"
    content  = renderer.render inline: "<%= request.post? %>"

    assert_equal "true", content
  end

  test "rendering with defaults" do
    renderer = ApplicationController.renderer.new https: true
    content = renderer.render inline: "<%= request.ssl? %>"

    assert_equal "true", content
  end

  test "same defaults from the same controller" do
    renderer_defaults = ->(controller) { controller.renderer.defaults }

    assert_equal renderer_defaults[AccountsController], renderer_defaults[AccountsController]
    assert_equal renderer_defaults[AccountsController], renderer_defaults[CommentsController]
  end

  test "rendering with different formats" do
    html = "Hello world!"
    xml  = "<p>Hello world!</p>\n"

    assert_equal html, render["respond_to/using_defaults"]
    assert_equal xml,  render["respond_to/using_defaults.xml.builder"]
    assert_equal xml,  render["respond_to/using_defaults", formats: :xml]
  end

  test "rendering with helpers" do
    assert_equal "<p>1\n<br />2</p>", render[inline: '<%= simple_format "1\n2" %>']
  end

  test "rendering with user specified defaults" do
    ApplicationController.renderer.defaults.merge!({ hello: "hello", https: true })
    renderer = ApplicationController.renderer.new
    content = renderer.render inline: "<%= request.ssl? %>"

    assert_equal "true", content
  end

  private
    def render
      @render ||= ApplicationController.renderer.method(:render)
    end
end