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package events
import (
"fmt"
"sync"
"testing"
)
func TestChannel(t *testing.T) {
const nevents = 100
sink := NewChannel(0)
go func() {
var wg sync.WaitGroup
for i := 1; i <= nevents; i++ {
event := "event-" + fmt.Sprint(i)
wg.Add(1)
go func(event Event) {
defer wg.Done()
if err := sink.Write(event); err != nil {
t.Fatalf("error writing event: %v", err)
}
}(event)
}
wg.Wait()
sink.Close()
// now send another bunch of events and ensure we stay closed
for i := 1; i <= nevents; i++ {
if err := sink.Write(i); err != ErrSinkClosed {
t.Fatalf("unexpected error: %v != %v", err, ErrSinkClosed)
}
}
}()
var received int
loop:
for {
select {
case <-sink.C:
received++
case <-sink.Done():
break loop
}
}
sink.Close()
_, ok := <-sink.Done() // test will timeout if this hangs
if ok {
t.Fatalf("done should be a closed channel")
}
if received != nevents {
t.Fatalf("events did not make it through sink: %v != %v", received, nevents)
}
}
|
