@Test
public void testActiveSampleCount() {

    clockState = new ClockState();
    for (int i = 0; i < MIN_SAMPLE_SIZE + 1; i++) {
        assertEquals(i, clockState.activeSampleCount());
        clockState.addSample(ORIGIN_MICROS, RECEIVE_MICROS, TRANSMIT_MICROS, DESTINATION_MICROS);
    }
}