add tests for reverting default settings

app/controllers/account/site_settings_controller.rb

@@ -20,7 +20,7 @@ def update
   def revert
     @site_setting = resource
 
-    @site_setting.update(title: "Zero Waste", favicon: {
+    @site_setting.update(title: "ZeroWaste", favicon: {
       io: File.open("app/assets/images/logo_zerowaste.png"),
       filename: "logo_zerowaste.png",
       content_type: "image/png"

spec/factories/site_settings.rb

@@ -22,5 +22,10 @@
       title { "Test title" }
       favicon { Rack::Test::UploadedFile.new("app/assets/images/logo_zerowaste.png", "image/png") }
     end
+
+    trait :custom_setting do
+      title { "Custom Waste" }
+      favicon { Rack::Test::UploadedFile.new("app/assets/images/user.png", "image/png") }
+    end
   end
 end

spec/requests/site_setting_spec.rb

@@ -52,4 +52,29 @@
       end
     end
   end
+
+  describe "GET revert" do
+    include_context :authorize_admin
+
+    context "with valid params" do
+      let(:site_setting) { SiteSetting.current }
+      let(:site_setting_params) { FactoryBot.attributes_for(:site_setting, :custom_setting) }
+      let(:site_setting_default_params) { FactoryBot.attributes_for(:site_setting, :with_valid_site_setting) }
+
+      before { site_setting.update(site_setting_params) }
+
+      it "reverts site setting" do
+        get account_site_settings_revert_path
+
+        expect(response).to redirect_to(edit_account_site_setting_path)
+        expect(flash[:notice]).to eq(I18n.t("notifications.site_setting_reverted"))
+
+        expect(SiteSetting.current).to be_valid
+        expect(SiteSetting.current.favicon.attached?).to be_truthy
+
+        expect(SiteSetting.current.title).to eq(site_setting_default_params[:title])
+        expect(SiteSetting.current.favicon.filename).to eq(site_setting_default_params[:favicon].original_filename)
+      end
+    end
+  end
 end