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fetch_response_test.go
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fetch_response_test.go
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package sarama
import (
"bytes"
"testing"
)
var (
emptyFetchResponse = []byte{
0x00, 0x00, 0x00, 0x00}
oneMessageFetchResponse = []byte{
0x00, 0x00, 0x00, 0x01,
0x00, 0x05, 't', 'o', 'p', 'i', 'c',
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x05,
0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10,
0x00, 0x00, 0x00, 0x1C,
// messageSet
0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0x10,
// message
0x23, 0x96, 0x4a, 0xf7, // CRC
0x00,
0x00,
0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x02, 0x00, 0xEE}
oneRecordFetchResponse = []byte{
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of Topics
0x00, 0x05, 't', 'o', 'p', 'i', 'c', // Topic
0x00, 0x00, 0x00, 0x01, // Number of Partitions
0x00, 0x00, 0x00, 0x05, // Partition
0x00, 0x01, // Error
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // High Watermark Offset
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // Last Stable Offset
0x00, 0x00, 0x00, 0x00, // Number of Aborted Transactions
0x00, 0x00, 0x00, 0x52, // Records length
// recordBatch
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x46,
0x00, 0x00, 0x00, 0x00,
0x02,
0xDB, 0x47, 0x14, 0xC9,
0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0A,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01,
// record
0x28,
0x00,
0x0A,
0x00,
0x08, 0x01, 0x02, 0x03, 0x04,
0x06, 0x05, 0x06, 0x07,
0x02,
0x06, 0x08, 0x09, 0x0A,
0x04, 0x0B, 0x0C}
oneMessageFetchResponseV4 = []byte{
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of Topics
0x00, 0x05, 't', 'o', 'p', 'i', 'c', // Topic
0x00, 0x00, 0x00, 0x01, // Number of Partitions
0x00, 0x00, 0x00, 0x05, // Partition
0x00, 0x01, // Error
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // High Watermark Offset
0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, // Last Stable Offset
0x00, 0x00, 0x00, 0x00, // Number of Aborted Transactions
0x00, 0x00, 0x00, 0x1C,
// messageSet
0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0x10,
// message
0x23, 0x96, 0x4a, 0xf7, // CRC
0x00,
0x00,
0xFF, 0xFF, 0xFF, 0xFF,
0x00, 0x00, 0x00, 0x02, 0x00, 0xEE}
)
func TestEmptyFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "empty", &response, emptyFetchResponse, 0)
if len(response.Blocks) != 0 {
t.Error("Decoding produced topic blocks where there were none.")
}
}
func TestOneMessageFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one message", &response, oneMessageFetchResponse, 0)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.Records.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing message where there wasn't one.")
}
n, err := block.Records.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of messages.")
}
msgBlock := block.Records.msgSet.Messages[0]
if msgBlock.Offset != 0x550000 {
t.Error("Decoding produced incorrect message offset.")
}
msg := msgBlock.Msg
if msg.Codec != CompressionNone {
t.Error("Decoding produced incorrect message compression.")
}
if msg.Key != nil {
t.Error("Decoding produced message key where there was none.")
}
if !bytes.Equal(msg.Value, []byte{0x00, 0xEE}) {
t.Error("Decoding produced incorrect message value.")
}
}
func TestOneRecordFetchResponse(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one record", &response, oneRecordFetchResponse, 4)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.Records.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing record where there wasn't one.")
}
n, err := block.Records.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of records.")
}
rec := block.Records.recordBatch.Records[0]
if !bytes.Equal(rec.Key, []byte{0x01, 0x02, 0x03, 0x04}) {
t.Error("Decoding produced incorrect record key.")
}
if !bytes.Equal(rec.Value, []byte{0x05, 0x06, 0x07}) {
t.Error("Decoding produced incorrect record value.")
}
}
func TestOneMessageFetchResponseV4(t *testing.T) {
response := FetchResponse{}
testVersionDecodable(t, "one message v4", &response, oneMessageFetchResponseV4, 4)
if len(response.Blocks) != 1 {
t.Fatal("Decoding produced incorrect number of topic blocks.")
}
if len(response.Blocks["topic"]) != 1 {
t.Fatal("Decoding produced incorrect number of partition blocks for topic.")
}
block := response.GetBlock("topic", 5)
if block == nil {
t.Fatal("GetBlock didn't return block.")
}
if block.Err != ErrOffsetOutOfRange {
t.Error("Decoding didn't produce correct error code.")
}
if block.HighWaterMarkOffset != 0x10101010 {
t.Error("Decoding didn't produce correct high water mark offset.")
}
partial, err := block.Records.isPartial()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if partial {
t.Error("Decoding detected a partial trailing record where there wasn't one.")
}
n, err := block.Records.numRecords()
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if n != 1 {
t.Fatal("Decoding produced incorrect number of records.")
}
msgBlock := block.Records.msgSet.Messages[0]
if msgBlock.Offset != 0x550000 {
t.Error("Decoding produced incorrect message offset.")
}
msg := msgBlock.Msg
if msg.Codec != CompressionNone {
t.Error("Decoding produced incorrect message compression.")
}
if msg.Key != nil {
t.Error("Decoding produced message key where there was none.")
}
if !bytes.Equal(msg.Value, []byte{0x00, 0xEE}) {
t.Error("Decoding produced incorrect message value.")
}
}