Refactor toggles to work without JS, add specs

spec/features/admin/settings_spec.rb

@@ -18,4 +18,33 @@ RSpec.describe 'Admin/global settings', type: :feature do
     click_button "Save"
     expect(Setting.reserved_usernames).to eq(['Kosmos', 'Kredits'])
   end
+
+  describe "Service settings" do
+    scenario "Opening service settings shows page for first service" do
+      visit admin_settings_services_path
+
+      expect(current_url).to eq(admin_settings_services_url(params: { s: "discourse" }))
+    end
+
+    scenario "View ejabberd settings" do
+      visit admin_settings_services_path(params: { s: "ejabberd" })
+
+      expect(page).to have_content("Enable ejabberd integration")
+      expect(page).to have_field("API URL",
+        with: "http://xmpp.example.com/api",
+        disabled: true)
+    end
+
+    scenario "Disable ejabberd integration" do
+      visit admin_settings_services_path(params: { s: "ejabberd" })
+      expect(page).to have_checked_field("setting[ejabberd_enabled]")
+
+      uncheck "setting[ejabberd_enabled]"
+      click_button "Save"
+
+      expect(current_url).to eq(admin_settings_services_url(params: { s: "ejabberd" }))
+      expect(page).to_not have_checked_field("setting[ejabberd_enabled]")
+      expect(page).to_not have_field("API URL", disabled: true)
+    end
+  end
 end