76 lines
1.4 KiB
Go
76 lines
1.4 KiB
Go
package pubsub
|
|
|
|
import (
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
func TestDupePublisher(t *testing.T) {
|
|
pt := NewProgressTracker()
|
|
|
|
if _, err := pt.Publish("foo"); err != nil {
|
|
t.Fatalf("First publisher should not give error, err:%v", err)
|
|
}
|
|
|
|
if _, err := pt.Publish("foo"); err == nil {
|
|
t.Fatal("Dupe publisher should give error but got nil")
|
|
} else {
|
|
t.Logf("Got err: %v", err)
|
|
}
|
|
|
|
if _, err := pt.Publish("bar"); err != nil {
|
|
t.Fatalf("Different publisher should not give error, err:%v", err)
|
|
}
|
|
}
|
|
|
|
func TestSubSub(t *testing.T) {
|
|
pt := NewProgressTracker()
|
|
c1 := pt.Subscribe("foo")
|
|
select {
|
|
case <-c1:
|
|
default:
|
|
}
|
|
if c1 == nil {
|
|
t.Fatal("Subscriber should not get a closed channel")
|
|
}
|
|
c2 := pt.Subscribe("foo")
|
|
if c2 == nil {
|
|
t.Fatal("Subscriber should not get a closed channel")
|
|
}
|
|
}
|
|
|
|
func TestPubSub(t *testing.T) {
|
|
pt := NewProgressTracker()
|
|
pc, err := pt.Publish("foo")
|
|
if err != nil {
|
|
t.Fatalf("Unexpected err: %v", err)
|
|
}
|
|
if pc == nil {
|
|
t.Fatal("Should not get nil channel")
|
|
}
|
|
sc := pt.Subscribe("foo")
|
|
if sc == nil {
|
|
t.Fatal("Should not get nil channel")
|
|
}
|
|
wg := sync.WaitGroup{}
|
|
wg.Add(1)
|
|
go func() {
|
|
for range sc {
|
|
}
|
|
wg.Done()
|
|
}()
|
|
for i := 0; i < 10; i++ {
|
|
pc <- "blah"
|
|
if i == 4 || i == 5 {
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
}
|
|
close(pc)
|
|
wg.Wait()
|
|
sc2 := pt.Subscribe("foo")
|
|
if sc2 != nil {
|
|
t.Fatal("Subscriber after publisher done should return nil")
|
|
}
|
|
}
|