func New(authenticator authenticator.Token, cacheErrs bool, successTTL, failureTTL time.Duration) authenticator.Token {
	return newWithClock(authenticator, cacheErrs, successTTL, failureTTL, clock.RealClock{})
}

func newWithClock(authenticator authenticator.Token, cacheErrs bool, successTTL, failureTTL time.Duration, clock clock.Clock) authenticator.Token {
	randomCacheKey := make([]byte, 32)

		calledWithToken = append(calledWithToken, token)
		return &authenticator.Response{User: resultUsers[token]}, resultOk, resultErr
	})
	fakeClock := testingclock.NewFakeClock(time.Now())

	a := newWithClock(fakeAuth, true, time.Minute, 0, fakeClock)

	calledWithToken, resultUsers, resultOk, resultErr = []string{}, nil, false, nil
	a.AuthenticateToken(context.Background(), "bad1")
	a.AuthenticateToken(context.Background(), "bad2")