VRFS-1664 added another test

ruby/spec/jam_ruby/models/email_batch_spec_new_musicians.rb

@@ -83,6 +83,8 @@ describe EmailBatchNewMusician do
 
     it 'handles multiple receivers' do
       JamRuby::Score.createx(1, 'a', 1, 3, 'a', 3, 10)
+      JamRuby::Score.createx(1, 'a', 1, 4, 'a', 4, 10)
+      JamRuby::Score.createx(2, 'a', 2, 4, 'a', 4, 10)
       results = new_musician_batch.fetch_recipients
       expect(results.count).to eq(2)
       user, new_musicians = results.detect { |rr| rr[0].id == receiver1.id }