83 lines
1.4 KiB
Go
83 lines
1.4 KiB
Go
package pubsub
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import (
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"sync"
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"testing"
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"time"
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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(); 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(); err == nil {
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t.Fatal("Dupe publisher should give error but got nil")
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} else {
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t.Logf("Got 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()
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select {
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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 nil channel")
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}
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c2 := pt.Subscribe()
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if c2 == nil {
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t.Fatal("Subscriber should not get a nil 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, err := pt.Publish()
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if err != nil {
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t.Fatalf("Unexpected err: %v", err)
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}
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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()
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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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c := 0
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testc := make(chan int)
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go func() {
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for range sc {
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if c == 0 {
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close(testc)
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}
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c++
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}
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wg.Done()
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}()
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for i := 0; i < 10; i++ {
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pc <- "blah"
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time.Sleep(166 * time.Millisecond)
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if i == 5 {
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<-testc
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}
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}
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close(pc)
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wg.Wait()
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if c == 0 {
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t.Fatal("There should be atleast one update")
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}
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t.Logf("c is :%d", c)
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sc2 := pt.Subscribe()
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if sc2 != nil {
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t.Fatal("Subscriber after publisher done should return nil")
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}
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}
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