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group_test.go
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group_test.go
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package group
import (
"context"
"strings"
"testing"
"time"
"github.com/Shopify/sarama"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/beatlabs/patron/component/async"
"github.com/beatlabs/patron/component/async/kafka"
"github.com/beatlabs/patron/encoding"
"github.com/beatlabs/patron/encoding/json"
)
func TestNew(t *testing.T) {
brokers := []string{"192.168.1.1"}
type args struct {
name string
brokers []string
topics []string
group string
options []kafka.OptionFunc
}
tests := []struct {
name string
args args
wantErr bool
}{
{
name: "fails with missing name",
args: args{name: "", brokers: brokers, topics: []string{"topic1"}, group: "group1"},
wantErr: true,
},
{
name: "fails with missing brokers",
args: args{name: "test", brokers: []string{}, topics: []string{"topic1"}, group: "group1"},
wantErr: true,
},
{
name: "fails with empty broker",
args: args{name: "test", brokers: []string{" "}, topics: []string{"topic1"}, group: "group1"},
wantErr: true,
},
{
name: "fails with missing topics",
args: args{name: "test", brokers: brokers, topics: nil, group: "group1"},
wantErr: true,
},
{
name: "fails with one empty topic",
args: args{name: "test", brokers: brokers, topics: []string{"topic1", ""}, group: "group1"},
wantErr: true,
},
{
name: "fails with missing group",
args: args{name: "test", brokers: brokers, topics: []string{"topic1"}, group: ""},
wantErr: true,
},
{
name: "success",
args: args{name: "test", brokers: brokers, topics: []string{"topic1"}, group: "group1"},
wantErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := New(tt.args.name, tt.args.group, tt.args.topics, tt.args.brokers, tt.args.options...)
if tt.wantErr {
assert.Error(t, err)
assert.Nil(t, got)
} else {
assert.NoError(t, err)
assert.NotNil(t, got)
}
})
}
}
func TestFactory_Create(t *testing.T) {
type fields struct {
clientName string
topics []string
brokers []string
oo []kafka.OptionFunc
}
tests := map[string]struct {
fields fields
wantErr bool
}{
"success": {
fields: fields{
clientName: "clientA",
topics: []string{"topicA"},
brokers: []string{"192.168.1.1"},
},
wantErr: false,
},
"failed with invalid option": {
fields: fields{
clientName: "clientB",
topics: []string{"topicA"},
brokers: []string{"192.168.1.1"},
oo: []kafka.OptionFunc{kafka.Buffer(-100)},
},
wantErr: true,
},
}
for testName, tt := range tests {
t.Run(testName, func(t *testing.T) {
f := &Factory{
name: tt.fields.clientName,
topics: tt.fields.topics,
brokers: tt.fields.brokers,
oo: tt.fields.oo,
}
got, err := f.Create()
if tt.wantErr {
assert.Error(t, err)
assert.Nil(t, got)
} else {
assert.NoError(t, err)
require.NotNil(t, got)
consumer, ok := got.(*consumer)
assert.True(t, ok, "consumer is not of type group.consumer")
assert.Equal(t, tt.fields.brokers, consumer.config.Brokers)
assert.Equal(t, tt.fields.topics, consumer.topics)
assert.True(t, strings.HasSuffix(consumer.config.SaramaConfig.ClientID, tt.fields.clientName))
assert.False(t, got.OutOfOrder())
}
})
}
}
type mockConsumerClaim struct{ msgs []*sarama.ConsumerMessage }
func (m *mockConsumerClaim) Messages() <-chan *sarama.ConsumerMessage {
ch := make(chan *sarama.ConsumerMessage, len(m.msgs))
for _, m := range m.msgs {
ch <- m
}
go func() {
close(ch)
}()
return ch
}
func (m *mockConsumerClaim) Topic() string { return "" }
func (m *mockConsumerClaim) Partition() int32 { return 0 }
func (m *mockConsumerClaim) InitialOffset() int64 { return 0 }
func (m *mockConsumerClaim) HighWaterMarkOffset() int64 { return 1 }
type mockConsumerSession struct{}
func (m *mockConsumerSession) Claims() map[string][]int32 { return nil }
func (m *mockConsumerSession) MemberID() string { return "" }
func (m *mockConsumerSession) GenerationID() int32 { return 0 }
func (m *mockConsumerSession) MarkOffset(string, int32, int64, string) {
}
func (m *mockConsumerSession) Commit() {}
func (m *mockConsumerSession) ResetOffset(string, int32, int64, string) {
}
func (m *mockConsumerSession) MarkMessage(*sarama.ConsumerMessage, string) {}
func (m *mockConsumerSession) Context() context.Context { return context.Background() }
func TestHandler_ConsumeClaim(t *testing.T) {
tests := []struct {
name string
msgs []*sarama.ConsumerMessage
error string
wantErr bool
}{
{"success", saramaConsumerMessages(json.Type), "", false},
{"failure decoding", saramaConsumerMessages("mock"), "failed to determine decoder for mock", true},
{"failure content", saramaConsumerMessages(""), "failed to determine content type", true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
chMsg := make(chan async.Message, 1)
h := handler{messages: chMsg, consumer: &consumer{}}
err := h.ConsumeClaim(&mockConsumerSession{}, &mockConsumerClaim{tt.msgs})
if tt.wantErr {
assert.Error(t, err, tt.error)
} else {
assert.NoError(t, err)
ch := <-chMsg
assert.NotNil(t, ch)
}
})
}
}
func saramaConsumerMessages(ct string) []*sarama.ConsumerMessage {
return []*sarama.ConsumerMessage{
saramaConsumerMessage("value", &sarama.RecordHeader{
Key: []byte(encoding.ContentTypeHeader),
Value: []byte(ct),
}),
}
}
func saramaConsumerMessage(value string, header *sarama.RecordHeader) *sarama.ConsumerMessage {
return versionedConsumerMessage(value, header, 0)
}
func versionedConsumerMessage(value string, header *sarama.RecordHeader, version uint8) *sarama.ConsumerMessage {
bytes := []byte(value)
if version > 0 {
bytes = append([]byte{version}, bytes...)
}
return &sarama.ConsumerMessage{
Topic: "TEST_TOPIC",
Partition: 0,
Key: []byte("key"),
Value: bytes,
Offset: 0,
Timestamp: time.Now(),
BlockTimestamp: time.Now(),
Headers: []*sarama.RecordHeader{header},
}
}
func TestConsumer_ConsumeFailedBroker(t *testing.T) {
f, err := New("name", "group", []string{"topic"}, []string{"1", "2"})
assert.NoError(t, err)
c, err := f.Create()
assert.NoError(t, err)
chMsg, chErr, err := c.Consume(context.Background())
assert.Nil(t, chMsg)
assert.Nil(t, chErr)
assert.Error(t, err)
}