func (s *oplogSuite) assertStopped(c *gc.C, tailer *mongo.OplogTailer) {
// Output should close.
select {
case _, ok := <-tailer.Out():
c.Assert(ok, jc.IsFalse)
case <-time.After(coretesting.LongWait):
c.Fatal("tailer output should have closed")
}
// OplogTailer should die.
select {
case <-tailer.Dying():
// Success.
case <-time.After(coretesting.LongWait):
c.Fatal("tailer should have died")
}
}
