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posthog/livestream/kafka_test.go
2024-08-06 15:08:34 -07:00

99 lines
2.7 KiB
Go

package main
import (
"encoding/json"
"errors"
"testing"
"time"
"github.com/confluentinc/confluent-kafka-go/v2/kafka"
"github.com/posthog/posthog/livestream/mocks"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func TestPostHogKafkaConsumer_Consume(t *testing.T) {
// Create mock objects
mockConsumer := new(mocks.KafkaConsumerInterface)
mockGeoLocator := new(mocks.GeoLocator)
// Create channels
outgoingChan := make(chan PostHogEvent, 1)
statsChan := make(chan PostHogEvent, 1)
// Create PostHogKafkaConsumer
consumer := &PostHogKafkaConsumer{
consumer: mockConsumer,
topic: "test-topic",
geolocator: mockGeoLocator,
outgoingChan: outgoingChan,
statsChan: statsChan,
}
// Mock SubscribeTopics
mockConsumer.On("SubscribeTopics", []string{"test-topic"}, mock.AnythingOfType("kafka.RebalanceCb")).Return(nil)
// Create a test message
testWrapper := PostHogEventWrapper{
Uuid: "test-uuid",
DistinctId: "test-distinct-id",
Ip: "192.0.2.1",
Data: `{"event": "test-event", "properties": {"token": "test-token"}}`,
}
testMessageValue, _ := json.Marshal(testWrapper)
testMessage := &kafka.Message{
Value: testMessageValue,
}
// Mock ReadMessage
mockConsumer.On("ReadMessage", mock.AnythingOfType("time.Duration")).Return(testMessage, nil).Maybe()
// Mock GeoLocator Lookup
mockGeoLocator.On("Lookup", "192.0.2.1").Return(37.7749, -122.4194, nil)
// Run Consume in a goroutine
go consumer.Consume()
// Wait for the message to be processed
select {
case event := <-outgoingChan:
assert.Equal(t, "test-uuid", event.Uuid)
assert.Equal(t, "test-distinct-id", event.DistinctId)
assert.Equal(t, "test-event", event.Event)
assert.Equal(t, "test-token", event.Token)
assert.Equal(t, 37.7749, event.Lat)
assert.Equal(t, -122.4194, event.Lng)
case <-time.After(time.Second):
t.Fatal("Timed out waiting for message")
}
// Check if the message was also sent to statsChan
select {
case <-statsChan:
// Message received in statsChan
case <-time.After(time.Second):
t.Fatal("Timed out waiting for stats message")
}
// Test error handling
mockConsumer.On("ReadMessage", mock.AnythingOfType("time.Duration")).Return(nil, errors.New("read error")).Maybe()
time.Sleep(time.Millisecond * 100) // Give some time for the error to be processed
// Assert that all expectations were met
mockConsumer.AssertExpectations(t)
mockGeoLocator.AssertExpectations(t)
}
func TestPostHogKafkaConsumer_Close(t *testing.T) {
mockConsumer := new(mocks.KafkaConsumerInterface)
consumer := &PostHogKafkaConsumer{
consumer: mockConsumer,
}
mockConsumer.On("Close").Return(nil)
consumer.Close()
mockConsumer.AssertExpectations(t)
}