var (
	SetEnterRoundTripHook = hookSetter(&testHookEnterRoundTrip)
	SetRoundTripRetried   = hookSetter(&testHookRoundTripRetried)
)

func SetReadLoopBeforeNextReadHook(f func()) {
	unnilTestHook(&f)
	testHookReadLoopBeforeNextRead = f
}

// SetPendingDialHooks sets the hooks that run before and after handling
// pending dials.
func SetPendingDialHooks(before, after func()) {
	unnilTestHook(&before)
	unnilTestHook(&after)