Create system user with account (#1345)

* Create system user with account

* Update tests

app/models/account.rb

@@ -5,6 +5,7 @@ class Account < ApplicationRecord
 
   class << self
     def create_with_admin_user(account:, owner:)
+      User.system
       User.create!(**owner.reverse_merge(role: "admin", password: SecureRandom.hex(16)))
       create!(**account)
     end

gems/fizzy-saas/app/models/signup.rb

@@ -65,7 +65,7 @@ class Signup
             password: password
           }
         )
-        @user = User.first
+        @user = User.find_by!(role: :admin)
         @account.setup_basic_template
       end
     end

test/models/account_test.rb

@@ -24,12 +24,15 @@ class AccountTest < ActiveSupport::TestCase
       assert_equal ActiveRecord::FixtureSet.identify("account-create-with-admin-user-test"), account.external_account_id
       assert_equal "Account Create With Admin", account.name
 
-      assert_equal 1, User.count
-      User.first.tap do |user|
-        assert_equal "David", user.name
-        assert_equal "david@37signals.com", user.email_address
-        assert_equal "admin", user.role
-      end
+      assert_equal 2, User.count
+
+      system = User.find_by(role: "system")
+      assert system
+
+      admin = User.find_by(role: "admin")
+      assert_equal "David", admin.name
+      assert_equal "david@37signals.com", admin.email_address
+      assert_equal "admin", admin.role
     end
   end
 end