not need to use 0 here

balance_strategy.go

@@ -267,7 +267,7 @@ func (s *stickyBalanceStrategy) Plan(members map[string]ConsumerGroupMemberMetad
 	plan := make(BalanceStrategyPlan, len(currentAssignment))
 	for memberID, assignments := range currentAssignment {
 		if len(assignments) == 0 {
-			plan[memberID] = make(map[string][]int32, 0)
+			plan[memberID] = make(map[string][]int32)
 		} else {
 			for _, assignment := range assignments {
 				plan.Add(memberID, assignment.Topic, assignment.Partition)

mocks/async_producer.go

@@ -33,7 +33,7 @@ func NewAsyncProducer(t ErrorReporter, config *sarama.Config) *AsyncProducer {
 	}
 	mp := &AsyncProducer{
 		t:            t,
-		closed:       make(chan struct{}, 0),
+		closed:       make(chan struct{}),
 		expectations: make([]*producerExpectation, 0),
 		input:        make(chan *sarama.ProducerMessage, config.ChannelBufferSize),
 		successes:    make(chan *sarama.ProducerMessage, config.ChannelBufferSize),