woodpecker/cncd/pubsub/pub_test.go
2019-04-06 15:44:04 +02:00

102 lines
1.9 KiB
Go

package pubsub
import (
"context"
"sync"
"testing"
"time"
)
func TestPubsub(t *testing.T) {
var (
wg sync.WaitGroup
testTopic = "test"
testMessage = Message{
Data: []byte("test"),
}
)
ctx, cancel := context.WithCancel(
context.Background(),
)
broker := New()
broker.Create(ctx, testTopic)
go func() {
broker.Subscribe(ctx, testTopic, func(message Message) { wg.Done() })
}()
go func() {
broker.Subscribe(ctx, testTopic, func(message Message) { wg.Done() })
}()
<-time.After(time.Millisecond)
if _, ok := broker.(*publisher).topics[testTopic]; !ok {
t.Errorf("Expect topic registered with publisher")
}
wg.Add(2)
go func() {
broker.Publish(ctx, testTopic, testMessage)
}()
wg.Wait()
cancel()
}
func TestPublishNotFound(t *testing.T) {
var (
testTopic = "test"
testMessage = Message{
Data: []byte("test"),
}
)
broker := New()
err := broker.Publish(context.Background(), testTopic, testMessage)
if err != ErrNotFound {
t.Errorf("Expect Not Found error when topic does not exist")
}
}
func TestSubscribeNotFound(t *testing.T) {
var (
testTopic = "test"
testCallback = func(message Message) {}
)
broker := New()
err := broker.Subscribe(context.Background(), testTopic, testCallback)
if err != ErrNotFound {
t.Errorf("Expect Not Found error when topic does not exist")
}
}
func TestSubscriptionClosed(t *testing.T) {
var (
wg sync.WaitGroup
testTopic = "test"
testCallback = func(Message) {}
)
broker := New()
broker.Create(context.Background(), testTopic)
go func() {
broker.Subscribe(context.Background(), testTopic, testCallback)
wg.Done()
}()
<-time.After(time.Millisecond)
if _, ok := broker.(*publisher).topics[testTopic]; !ok {
t.Errorf("Expect topic registered with publisher")
}
wg.Add(1)
broker.Remove(context.Background(), testTopic)
wg.Wait()
if _, ok := broker.(*publisher).topics[testTopic]; ok {
t.Errorf("Expect topic removed from publisher")
}
}