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Fix incorrect removing handlers by index #39

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Fix incorrect removing handlers by index #39

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4 changes: 2 additions & 2 deletions event_bus.go
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Original file line number Diff line number Diff line change
Expand Up @@ -136,9 +136,9 @@ func (bus *EventBus) Publish(topic string, args ...interface{}) {
// so make a copy and iterate the copied slice.
copyHandlers := make([]*eventHandler, 0, len(handlers))
copyHandlers = append(copyHandlers, handlers...)
for i, handler := range copyHandlers {
for _, handler := range copyHandlers {
if handler.flagOnce {
bus.removeHandler(topic, i)
bus.removeHandler(topic, bus.findHandlerIdx(topic, handler.callBack))
}
if !handler.async {
bus.doPublish(handler, topic, args...)
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17 changes: 17 additions & 0 deletions event_bus_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -154,3 +154,20 @@ func TestSubscribeAsync(t *testing.T) {
t.Fail()
}
}

func TestManySubscribeOnce(t *testing.T) {
bus := New()
event := "topic"
var flags [3]byte

bus.SubscribeOnce(event, func() { flags[0]++ })
bus.SubscribeOnce(event, func() { flags[1]++ })
bus.Subscribe(event, func() { flags[2]++ })

bus.Publish(event)
bus.Publish(event)

if flags != [3]byte{1, 1, 2} {
t.Fail()
}
}