}
		select {
		case <-removedChan:
			t.Fatal("Add() failed: callback invoked with added=false")
		default:
		}

		wantEvent := fsnotify.Event{Name: file, Op: fsnotify.Write}
		fakeWatcher.InjectEvent(file, wantEvent)
		gotEvent := <-watcher.Events(file)
		if gotEvent != wantEvent {
			t.Fatalf("Events() failed: got %v want %v", gotEvent, wantEvent)
		}

		wantError := fmt.Errorf("error=%v", file)

type FakeWatcher struct {
	sync.Mutex

	events      map[string]chan fsnotify.Event
	errors      map[string]chan error
	changedFunc func(path string, added bool)
}

// InjectEvent injects an event into the fake file watcher.
func (w *FakeWatcher) InjectEvent(path string, event fsnotify.Event) {
	w.Lock()
	ch, ok := w.events[path]
	w.Unlock()

	if ok {
		ch <- event
	}
}