### Question:
KinAccountImpl extends AbstractKinAccount { @Override public void activateSync() throws OperationFailedException { checkValidAccount(); accountActivator.activate(account); } KinAccountImpl(KeyPair account, BackupRestore backupRestore, TransactionSender transactionSender,
        AccountActivator accountActivator,
        AccountInfoRetriever accountInfoRetriever, BlockchainEventsCreator blockchainEventsCreator); @Override String getPublicAddress(); @NonNull @Override TransactionId sendTransactionSync(@NonNull String publicAddress, @NonNull BigDecimal amount); @NonNull @Override TransactionId sendTransactionSync(@NonNull String publicAddress, @NonNull BigDecimal amount,
        @Nullable String memo); @NonNull @Override TransactionId sendBurnAccountTransactionSync(@NonNull String publicAddress); @Override boolean isAccountBurnedSync(); @NonNull @Override Balance getBalanceSync(); @Override void activateSync(); @Override int getStatusSync(); @Override BlockchainEvents blockchainEvents(); @Override String export(@NonNull String passphrase);  }### Answer:
@Test public void activateSync() throws Exception { initWithRandomAccount(); kinAccount.activateSync(); verify(mockAccountActivator).activate(expectedRandomAccount); }