remove extra key/values from user create job

app/jobs/regular/donation_user.rb

@@ -2,7 +2,7 @@
 module Jobs
   class DonationUser < ::Jobs::Base
     def execute(args)
-      user = User.create!(args)
+      user = User.create!(args.slice(:username, :password, :name, :email))
       rewards = DiscourseDonations::Rewards.new(user)
       args[:rewards].to_a.each do |reward|
         rewards.grant_badge(reward[:name]) if reward[:type] == 'badge'

spec/jobs/regular/donation_user_spec.rb

@@ -17,12 +17,20 @@ RSpec.describe Jobs::DonationUser, type: :job do
   end
 
   describe 'rewards' do
+    describe 'create user with rewards' do
+      it 'creates a User object without rewards' do
+        User.expects(:create!).with(args)
+        subject.execute(args.merge(rewards: [], otherthing: nil))
+      end
+    end
+
+    describe 'User rewards' do
       let(:user) { Fabricate(:user) }
       let(:badge) { Fabricate(:badge) }
       let(:grp) { Fabricate(:group) }
 
       before do
-      User.expects(:create!).returns(user)
+        User.stubs(:create!).returns(user)
       end
 
       it 'grants the user a badge' do
@@ -54,3 +62,4 @@ RSpec.describe Jobs::DonationUser, type: :job do
       end
     end
   end
+end