User#destroy when user has sent messages when message has type exercise deletes message Failure/Error: expect { destroy }.to change(Message, :count).by(-3) expected `Message.count` to have changed by -3, but was changed by -1

ProformaService::ImportTask#execute when task with same uuid exists in db creates a predecessor for task Failure/Error: expect { import_proforma_task }.to change { task.reload.predecessor }.from(nil).to(be_an(Task)) NoMethodError: undefined method `predecessor' for an instance of Task

ProformaService::ImportTask#execute when task with same uuid exists in db when user does not own task when user is an author of task changes existing task Failure/Error: before { task.authors << user } NoMethodError: undefined method `authors' for an instance of Task

ProformaService::ImportTask#execute when task with same uuid exists in db when user does not own task when user is an author of task creates a new task Failure/Error: before { task.authors << user } NoMethodError: undefined method `authors' for an instance of Task