### Question:
SamplePrecompiledContract extends PrecompiledContracts.PrecompiledContract { public int GetBalance(Object... args) { UscAddress addr = new UscAddress("cd2a3d9f938e13cd947ec05abc7fe734df8dd826"); return repository.getBalance(addr).asBigInteger().intValue(); } SamplePrecompiledContract(UscAddress contractAddress); @Override long getGasForData(byte[] data); @Override void init(Transaction uscTx, Block currentBlock, Repository repository, BlockStore blockStore, ReceiptStore receiptStore, List<LogInfo> logs); @Override byte[] execute(byte[] data); int Method1(Object... args); void AddBalance(Object... args); int GetBalance(Object... args); void IncrementResult(Object... args); int GetResult(Object... args);  }### Answer:
@Test public void samplePrecompiledContractGetBalanceInitialBalance() { int balance = this.GetBalance(createRepositoryImpl(config)); assertEquals(0, balance); }