1 files changed, 136 insertions, 0 deletions
diff --git a/actionpack/test/controller/renderer_test.rb b/actionpack/test/controller/renderer_test.rb
new file mode 100644
index 0000000000..ae8330e029
--- /dev/null
+++ b/actionpack/test/controller/renderer_test.rb
@@ -0,0 +1,136 @@
+# frozen_string_literal: true
+
+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 "creating with new defaults" do
+    renderer = ApplicationController.renderer
+
+    new_defaults = { https: true }
+    new_renderer = renderer.with_defaults(new_defaults).new
+    content = new_renderer.render(inline: "<%= request.ssl? %>")
+
+    assert_equal "true", content
+  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 custom env using a key that is not in RACK_KEY_TRANSLATION" do
+    value    = "warden is here"
+    renderer = ApplicationController.renderer.new warden: value
+    content  = renderer.render inline: "<%= request.env['warden'] %>"
+
+    assert_equal value, 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
+
+  test "return valid asset url with defaults" do
+    renderer = ApplicationController.renderer
+    content  = renderer.render inline: "<%= asset_url 'asset.jpg' %>"
+
+    assert_equal "http://example.org/asset.jpg", content
+  end
+
+  test "return valid asset url when https is true" do
+    renderer = ApplicationController.renderer.new https: true
+    content  = renderer.render inline: "<%= asset_url 'asset.jpg' %>"
+
+    assert_equal "https://example.org/asset.jpg", content
+  end
+
+  private
+    def render
+      @render ||= ApplicationController.renderer.method(:render)
+    end
+end