Restore perform_deliveries value in tests

spec/features/admin/users_spec.rb

@@ -32,9 +32,11 @@ feature "Managing users" do
     describe "resending confirmation email", js: true do
       let(:user) { create :user, confirmed_at: nil }
 
-      it "displays success" do
-        ActionMailer::Base.perform_deliveries = true
+      around do |example|
+        performing_deliveries { example.run }
+      end
 
+      it "displays success" do
         visit spree.edit_admin_user_path user
 
         expect do

spec/features/consumer/account/settings_spec.rb

@@ -21,23 +21,23 @@ feature "Account Settings", js: true do
     end
 
     it "allows the user to update their email address" do
-      ActionMailer::Base.perform_deliveries = true
+      performing_deliveries do
+        fill_in 'user_email', with: 'new@email.com'
 
-      fill_in 'user_email', with: 'new@email.com'
+        expect do
+          click_button I18n.t(:update)
+        end.to send_confirmation_instructions
 
-      expect do
-        click_button I18n.t(:update)
-      end.to send_confirmation_instructions
+        sent_mail = ActionMailer::Base.deliveries.last
+        expect(sent_mail.to).to eq ['new@email.com']
 
-      sent_mail = ActionMailer::Base.deliveries.last
-      expect(sent_mail.to).to eq ['new@email.com']
-
-      expect(find(".alert-box.success").text.strip).to eq "#{I18n.t('spree.account_updated')} ×"
-      user.reload
-      expect(user.email).to eq 'old@email.com'
-      expect(user.unconfirmed_email).to eq 'new@email.com'
-      click_link I18n.t('spree.users.show.tabs.settings')
-      expect(page).to have_content I18n.t('spree.users.show.unconfirmed_email', unconfirmed_email: 'new@email.com')
+        expect(find(".alert-box.success").text.strip).to eq "#{I18n.t('spree.account_updated')} ×"
+        user.reload
+        expect(user.email).to eq 'old@email.com'
+        expect(user.unconfirmed_email).to eq 'new@email.com'
+        click_link I18n.t('spree.users.show.tabs.settings')
+        expect(page).to have_content I18n.t('spree.users.show.unconfirmed_email', unconfirmed_email: 'new@email.com')
+      end
     end
 
     it "allows the user to change their password" do

spec/features/consumer/authentication_spec.rb

@@ -71,17 +71,17 @@ feature "Authentication", js: true do
           end
 
           scenario "Signing up successfully" do
-            ActionMailer::Base.perform_deliveries = true
+            performing_deliveries do
+              setup_email
+              fill_in "Email", with: "test@foo.com"
+              fill_in "Choose a password", with: "test12345"
+              fill_in "Confirm password", with: "test12345"
 
-            setup_email
-            fill_in "Email", with: "test@foo.com"
-            fill_in "Choose a password", with: "test12345"
-            fill_in "Confirm password", with: "test12345"
-
-            expect do
-              click_signup_button
-              expect(page).to have_content I18n.t('devise.user_registrations.spree_user.signed_up_but_unconfirmed')
-            end.to send_confirmation_instructions
+              expect do
+                click_signup_button
+                expect(page).to have_content I18n.t('devise.user_registrations.spree_user.signed_up_but_unconfirmed')
+              end.to send_confirmation_instructions
+            end
           end
         end
 

spec/support/email_helper.rb

@@ -7,5 +7,17 @@ module OpenFoodNetwork
     def setup_email
       Spree::Config[:mails_from] = "test@ofn.example.org"
     end
+
+    # Ensures the value `perform_deliveries` had is restored. This saves us
+    # from messing up with the test suite's global state which is cause of
+    # trouble.
+    def performing_deliveries
+      old_value = ActionMailer::Base.perform_deliveries
+      ActionMailer::Base.perform_deliveries = true
+
+      yield
+
+      ActionMailer::Base.perform_deliveries = old_value
+    end
   end
 end