github.com/deanMdreon/kafka-go@v0.4.32/metadata_test.go (about) 1 package kafka 2 3 import ( 4 "context" 5 "testing" 6 ) 7 8 func TestClientMetadata(t *testing.T) { 9 client, topic, shutdown := newLocalClientAndTopic() 10 defer shutdown() 11 12 metadata, err := client.Metadata(context.Background(), &MetadataRequest{ 13 Topics: []string{topic}, 14 }) 15 16 if err != nil { 17 t.Fatal(err) 18 } 19 20 if len(metadata.Brokers) == 0 { 21 t.Error("no brokers were returned in the metadata response") 22 } 23 24 for _, b := range metadata.Brokers { 25 if b == (Broker{}) { 26 t.Error("unexpected broker with zero-value in metadata response") 27 } 28 } 29 30 if len(metadata.Topics) == 0 { 31 t.Error("no topics were returned in the metadata response") 32 } else { 33 topicMetadata := metadata.Topics[0] 34 35 if topicMetadata.Name != topic { 36 t.Error("invalid topic name:", topicMetadata.Name) 37 } 38 39 if len(topicMetadata.Partitions) == 0 { 40 t.Error("no partitions were returned in the topic metadata response") 41 } else { 42 partitionMetadata := topicMetadata.Partitions[0] 43 44 if partitionMetadata.Topic != topic { 45 t.Error("invalid partition topic name:", partitionMetadata.Topic) 46 } 47 48 if partitionMetadata.ID != 0 { 49 t.Error("invalid partition index:", partitionMetadata.ID) 50 } 51 52 if partitionMetadata.Leader == (Broker{}) { 53 t.Error("no partition leader was returned in the partition metadata response") 54 } 55 56 if partitionMetadata.Error != nil { 57 t.Error("unexpected error found in the partition metadata response:", partitionMetadata.Error) 58 } 59 60 // assume newLocalClientAndTopic creates the topic with one 61 // partition 62 if len(topicMetadata.Partitions) > 1 { 63 t.Error("too many partitions were returned in the topic metadata response") 64 } 65 } 66 67 if topicMetadata.Error != nil { 68 t.Error("unexpected error found in the topic metadata response:", topicMetadata.Error) 69 } 70 71 if len(metadata.Topics) > 1 { 72 t.Error("too many topics were returned in the metadata response") 73 } 74 } 75 }