### Question:
SlotProcessor { public void onTick(final UInt64 currentTime) { final UInt64 genesisTime = recentChainData.getGenesisTime(); if (currentTime.compareTo(genesisTime) < 0) { return; } if (isNextSlotDue(currentTime, genesisTime) && syncService.isSyncActive()) { processSlotWhileSyncing(); nodeSlot.inc(); return; } final UInt64 calculatedSlot = ForkChoiceUtil.getCurrentSlot(currentTime, genesisTime); if (calculatedSlot.compareTo(nodeSlot.getValue().plus(ONE)) > 0) { eventLog.nodeSlotsMissed(nodeSlot.getValue(), calculatedSlot); nodeSlot.setValue(calculatedSlot); } final UInt64 epoch = compute_epoch_at_slot(nodeSlot.getValue()); final UInt64 nodeSlotStartTime = ForkChoiceUtil.getSlotStartTime(nodeSlot.getValue(), genesisTime); if (isSlotStartDue(calculatedSlot)) { processSlotStart(epoch); } if (isSlotAttestationDue(calculatedSlot, currentTime, nodeSlotStartTime)) { processSlotAttestation(epoch); } if (isSlotAggregationDue(calculatedSlot, currentTime, nodeSlotStartTime)) { processSlotAggregate(); nodeSlot.inc(); } } @VisibleForTesting  SlotProcessor(
      final RecentChainData recentChainData,
      final SyncService syncService,
      final ForkChoice forkChoice,
      final Eth2Network p2pNetwork,
      final SlotEventsChannel slotEventsChannelPublisher,
      final EventBus eventBus,
      final EventLogger eventLogger);  SlotProcessor(
      final RecentChainData recentChainData,
      final SyncService syncService,
      final ForkChoice forkChoice,
      final Eth2Network p2pNetwork,
      final SlotEventsChannel slotEventsChannelPublisher,
      final EventBus eventBus); NodeSlot getNodeSlot(); void setCurrentSlot(final UInt64 slot); void onTick(final UInt64 currentTime);  }### Answer:
@Test public void onTick_shouldNotProcessPreGenesis() { slotProcessor.onTick(genesisTime.minus(ONE)); }