81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
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package pubsub
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import (
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"fmt"
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"sync"
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"testing"
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)
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func TestDupePublisher(t *testing.T) {
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pt := NewProgressTracker()
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if _, err := pt.Publish("foo"); err != nil {
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t.Fatalf("First publisher should not give error, err:%v", err)
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}
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if _, err := pt.Publish("foo"); err == nil {
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t.Fatal("Dupe publisher should give error but got nil")
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}
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if _, err := pt.Publish("bar"); err != nil {
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t.Fatalf("Different publisher should not give error, err:%v", err)
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}
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}
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func TestSubSub(t *testing.T) {
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pt := NewProgressTracker()
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c1 := pt.Subscribe("foo")
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select {
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//Not Working: expected 1 expression
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//case _, ok <- c1:
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case <-c1:
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default:
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}
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if c1 == nil {
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t.Fatal("Subscriber should not get a closed channel")
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}
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c2 := pt.Subscribe("foo")
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if c2 == nil {
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t.Fatal("Subscriber should not get a closed channel")
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}
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}
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func TestPubSub(t *testing.T) {
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pt := NewProgressTracker()
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pc, _ := pt.Publish("foo")
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if pc == nil {
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t.Fatal("Should not get nil channel")
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}
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sc := pt.Subscribe("foo")
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fmt.Printf("From test: chan is %+v and %#v\n", sc, sc)
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if sc == nil {
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t.Fatal("Should not get nil channel")
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}
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wg := sync.WaitGroup{}
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wg.Add(1)
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go func() {
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fmt.Println("Subscriber start")
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c := 0
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for range sc {
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fmt.Println("Subscriber got msg")
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c++
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}
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fmt.Println("Subscriber received close")
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if c == 0 {
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fmt.Println("Should have gotten update")
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}
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wg.Done()
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fmt.Println("Subscriber Done")
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}()
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fmt.Println("Producer Start")
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for i := 0; i < 10; i++ {
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fmt.Println("Producer Sent")
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pc <- "blah"
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}
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close(pc)
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fmt.Println("Producer close")
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t.Log("Now waiting")
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fmt.Println("Now waiting")
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wg.Wait()
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}
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