.

go/internal/xtracing/tracetest/tracetest.go

@@ -263,7 +263,6 @@ func (t *T) queuenak(msg *_Msg, why string) {
 //
 // It should be called not more than once.
 // Before SetEventRouter is called, all events go to "default" stream.
-// XXX naming
 func (t *T) SetEventRouter(routeEvent func(event interface{}) (stream string)) {
 	t.mu.Lock()
 	defer t.mu.Unlock()
@@ -274,16 +273,13 @@ func (t *T) SetEventRouter(routeEvent func(event interface{}) (stream string)) {
 	t.routeEvent = routeEvent
 }
 
-// t.RxEvent should be synchronously called from test system when an event
-// occurs.
+// RxEvent should be synchronously called from test system when an event occurs.
 //
 // The sequential process of the test system where event originated should be
-// paused until RxEvent returns. This requirement can be easily met via ... XXX
+// paused until RxEvent returns. This requirement can be usually met via
+// inserting t.RxEvent() call into the code the produces the event.
 //
-//
-// XXX doc; naming
-// XXX NewEvent? IncomingEvent? OnEvent?
-// XXX pass events in not via t (via something dedicated)?
+// XXX naming; NewEvent? IncomingEvent? OnEvent?
 func (t *T) RxEvent(event interface{}) {
 	t0 := time.Now()
 	stream := ""