Render friendly error message when using an invalid token

test/controllers/users/email_addresses/confirmations_controller_test.rb

@@ -3,6 +3,7 @@ require "test_helper"
 class Users::EmailAddresses::ConfirmationsControllerTest < ActionDispatch::IntegrationTest
   setup do
     @user = users(:david)
+    @old_email = @user.identity.email_address
     @new_email = "newemail@example.com"
     @token = @user.send(:generate_email_address_change_token, to: @new_email)
   end
@@ -13,8 +14,6 @@ class Users::EmailAddresses::ConfirmationsControllerTest < ActionDispatch::Integ
   end
 
   test "create" do
-    old_email = @user.identity.email_address
-
     post user_email_address_confirmation_path(user_id: @user.id, email_address_token: @token, script_name: @user.account.slug)
 
     assert_equal @new_email, @user.reload.identity.email_address
@@ -22,8 +21,10 @@ class Users::EmailAddresses::ConfirmationsControllerTest < ActionDispatch::Integ
   end
 
   test "create with invalid token" do
-    assert_raises(ArgumentError) do
-      post user_email_address_confirmation_path(user_id: @user.id, email_address_token: "invalid", script_name: @user.account.slug)
-    end
+    post user_email_address_confirmation_path(user_id: @user.id, email_address_token: "invalid", script_name: @user.account.slug)
+
+    assert_equal @user.identity.email_address, @old_email
+    assert_response :unprocessable_entity
+    assert_match /Something went wrong/, response.body
   end
 end