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async_producer_test.go
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async_producer_test.go
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package mocks
import (
"errors"
"fmt"
"regexp"
"strings"
"testing"
"github.com/IBM/sarama"
)
func generateRegexpChecker(re string) func([]byte) error {
return func(val []byte) error {
matched, err := regexp.MatchString(re, string(val))
if err != nil {
return errors.New("Error while trying to match the input message with the expected pattern: " + err.Error())
}
if !matched {
return fmt.Errorf("No match between input value \"%s\" and expected pattern \"%s\"", val, re)
}
return nil
}
}
type testReporterMock struct {
errors []string
}
func newTestReporterMock() *testReporterMock {
return &testReporterMock{errors: make([]string, 0)}
}
func (trm *testReporterMock) Errorf(format string, args ...interface{}) {
trm.errors = append(trm.errors, fmt.Sprintf(format, args...))
}
func TestMockAsyncProducerImplementsAsyncProducerInterface(t *testing.T) {
var mp interface{} = &AsyncProducer{}
if _, ok := mp.(sarama.AsyncProducer); !ok {
t.Error("The mock producer should implement the sarama.Producer interface.")
}
}
func TestProducerReturnsExpectationsToChannels(t *testing.T) {
config := NewTestConfig()
config.Producer.Return.Successes = true
mp := NewAsyncProducer(t, config).
ExpectInputAndSucceed().
ExpectInputAndSucceed().
ExpectInputAndFail(sarama.ErrOutOfBrokers)
mp.Input() <- &sarama.ProducerMessage{Topic: "test 1"}
mp.Input() <- &sarama.ProducerMessage{Topic: "test 2"}
mp.Input() <- &sarama.ProducerMessage{Topic: "test 3"}
msg1 := <-mp.Successes()
msg2 := <-mp.Successes()
err1 := <-mp.Errors()
if msg1.Topic != "test 1" {
t.Error("Expected message 1 to be returned first")
}
if msg2.Topic != "test 2" {
t.Error("Expected message 2 to be returned second")
}
if err1.Msg.Topic != "test 3" || !errors.Is(err1, sarama.ErrOutOfBrokers) {
t.Error("Expected message 3 to be returned as error")
}
if err := mp.Close(); err != nil {
t.Error(err)
}
}
func TestProducerWithTooFewExpectations(t *testing.T) {
trm := newTestReporterMock()
mp := NewAsyncProducer(trm, nil)
mp.ExpectInputAndSucceed()
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
if err := mp.Close(); err != nil {
t.Error(err)
}
if len(trm.errors) != 1 {
t.Error("Expected to report an error")
}
}
func TestProducerWithTooManyExpectations(t *testing.T) {
trm := newTestReporterMock()
mp := NewAsyncProducer(trm, nil).
ExpectInputAndSucceed().
ExpectInputAndFail(sarama.ErrOutOfBrokers)
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
if err := mp.Close(); err != nil {
t.Error(err)
}
if len(trm.errors) != 1 {
t.Error("Expected to report an error")
}
}
func TestProducerFailTxn(t *testing.T) {
config := NewTestConfig()
config.Producer.Transaction.ID = "test"
config.Producer.RequiredAcks = sarama.WaitForAll
config.Producer.Retry.Backoff = 0
config.Producer.Idempotent = true
config.Net.MaxOpenRequests = 1
config.Version = sarama.V0_11_0_0
trm := newTestReporterMock()
mp := NewAsyncProducer(trm, config)
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
_ = mp.Close()
if len(trm.errors) != 1 {
t.Error("must have fail with txn begin error")
}
}
func TestProducerWithTxn(t *testing.T) {
config := NewTestConfig()
config.Producer.Transaction.ID = "test"
config.Producer.RequiredAcks = sarama.WaitForAll
config.Producer.Retry.Backoff = 0
config.Producer.Idempotent = true
config.Net.MaxOpenRequests = 1
config.Version = sarama.V0_11_0_0
trm := newTestReporterMock()
mp := NewAsyncProducer(trm, config).
ExpectInputAndSucceed()
if !mp.IsTransactional() {
t.Error("producer must be transactional")
}
if err := mp.BeginTxn(); err != nil {
t.Error(err)
}
if mp.TxnStatus()&sarama.ProducerTxnFlagInTransaction == 0 {
t.Error("transaction must be started")
}
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
if err := mp.AddMessageToTxn(&sarama.ConsumerMessage{
Topic: "original-topic",
Partition: 0,
Offset: 123,
}, "test-group", nil); err != nil {
t.Error(err)
}
if err := mp.AddOffsetsToTxn(map[string][]*sarama.PartitionOffsetMetadata{
"original-topic": {
{
Partition: 1,
Offset: 321,
},
},
}, "test-group"); err != nil {
t.Error(err)
}
if err := mp.CommitTxn(); err != nil {
t.Error(err)
}
if err := mp.Close(); err != nil {
t.Error(err)
}
}
func TestProducerWithCheckerFunction(t *testing.T) {
trm := newTestReporterMock()
mp := NewAsyncProducer(trm, nil).
ExpectInputWithCheckerFunctionAndSucceed(generateRegexpChecker("^tes")).
ExpectInputWithCheckerFunctionAndSucceed(generateRegexpChecker("^tes$"))
mp.Input() <- &sarama.ProducerMessage{Topic: "test", Value: sarama.StringEncoder("test")}
mp.Input() <- &sarama.ProducerMessage{Topic: "test", Value: sarama.StringEncoder("test")}
if err := mp.Close(); err != nil {
t.Error(err)
}
if len(mp.Errors()) != 1 {
t.Error("Expected to report an error")
}
err1 := <-mp.Errors()
if !strings.HasPrefix(err1.Err.Error(), "No match") {
t.Error("Expected to report a value check error, found: ", err1.Err)
}
}
func TestProducerWithBrokenPartitioner(t *testing.T) {
trm := newTestReporterMock()
config := NewTestConfig()
config.Producer.Partitioner = func(string) sarama.Partitioner {
return brokePartitioner{}
}
mp := NewAsyncProducer(trm, config)
mp.ExpectInputWithMessageCheckerFunctionAndSucceed(func(msg *sarama.ProducerMessage) error {
if msg.Partition != 15 {
t.Error("Expected partition 15, found: ", msg.Partition)
}
if msg.Topic != "test" {
t.Errorf(`Expected topic "test", found: %q`, msg.Topic)
}
return nil
})
mp.ExpectInputAndSucceed() // should actually fail in partitioning
mp.Input() <- &sarama.ProducerMessage{Topic: "test"}
mp.Input() <- &sarama.ProducerMessage{Topic: "not-test"}
if err := mp.Close(); err != nil {
t.Error(err)
}
if len(trm.errors) != 1 || !strings.Contains(trm.errors[0], "partitioning unavailable") {
t.Error("Expected to report partitioning unavailable, found", trm.errors)
}
}
// brokeProducer refuses to partition anything not on the “test” topic, and sends everything on
// that topic to partition 15.
type brokePartitioner struct{}
func (brokePartitioner) Partition(msg *sarama.ProducerMessage, n int32) (int32, error) {
if msg.Topic == "test" {
return 15, nil
}
return 0, errors.New("partitioning unavailable")
}
func (brokePartitioner) RequiresConsistency() bool { return false }
func TestProducerWithInvalidConfiguration(t *testing.T) {
trm := newTestReporterMock()
config := NewTestConfig()
config.Version = sarama.V0_11_0_2
config.ClientID = "not a valid producer ID"
mp := NewAsyncProducer(trm, config)
if err := mp.Close(); err != nil {
t.Error(err)
}
if len(trm.errors) != 1 {
t.Error("Expected to report a single error")
} else if !strings.Contains(trm.errors[0], `ClientID value "not a valid producer ID" is not valid for Kafka versions before 1.0.0`) {
t.Errorf("Unexpected error: %s", trm.errors[0])
}
}