Update Turbo Drive <meta> across navigations

Closes [#549] Add System Test level coverage to ensure that Turbo Drive navigations will re-render any `<meta>` elements nested within the document's `<head>`. To achieve this coverage, introduce the `PagesController#show` action that links to HTML pages that render their `<head>` based on the `turbo_refresh_method` and `turbo_refresh_scroll` query parameters. [#549]: #549
hotwired · Jul 13, 2024 · 9da91e9 · 9da91e9
1 parent 41e8561
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diff --git a/test/dummy/app/controllers/pages_controller.rb b/test/dummy/app/controllers/pages_controller.rb
@@ -0,0 +1,2 @@
+class PagesController < ApplicationController
+end
diff --git a/test/dummy/app/views/pages/show.html.erb b/test/dummy/app/views/pages/show.html.erb
@@ -0,0 +1,16 @@
+<%= turbo_refreshes_with method: params.fetch(:turbo_refresh_method, :replace).to_sym, scroll: params.fetch(:turbo_refresh_scroll, :reset).to_sym %>
+
+<h1><%= params[:id].titleize %></h1>
+
+<% {
+  classic: {
+    turbo_refresh_method: :replace,
+    turbo_refresh_scroll: :reset,
+  },
+  morph: {
+    turbo_refresh_method: :morph,
+    turbo_refresh_scroll: :preserve,
+  }
+}.each do |id, refresh| %>
+  <%= link_to_unless_current id.to_s.titleize, page_path(id, refresh) %>
+<% end %>
diff --git a/test/dummy/config/routes.rb b/test/dummy/config/routes.rb
@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  resources :pages, only: :show
   resources :articles do
     delete :destroy_all, on: :collection
   end

diff --git a/test/system/navigations_test.rb b/test/system/navigations_test.rb
@@ -0,0 +1,26 @@
+require "application_system_test_case"
+
+class NavigationsTest < ApplicationSystemTestCase
+  test "navigation updates Turbo Refresh meta tags" do
+    visit page_path(:classic)
+
+    within "head", visible: false do
+      assert_selector :element, "meta", name: "turbo-refresh-method", content: "replace", visible: false, count: 1
+      assert_selector :element, "meta", name: "turbo-refresh-scroll", content: "reset", visible: false, count: 1
+    end
+
+    click_link "Morph"
+
+    within "head", visible: false do
+      assert_selector :element, "meta", name: "turbo-refresh-method", content: "morph", visible: false, count: 1
+      assert_selector :element, "meta", name: "turbo-refresh-scroll", content: "preserve", visible: false, count: 1
+    end
+
+    click_link "Classic"
+
+    within "head", visible: false do
+      assert_selector :element, "meta", name: "turbo-refresh-method", content: "replace", visible: false, count: 1
+      assert_selector :element, "meta", name: "turbo-refresh-scroll", content: "reset", visible: false, count: 1
+    end
+  end
+end