@Test
public void testEthEstimateGas() throws Exception {

    web3j.ethEstimateGas(
            Transaction.createEthCallTransaction(
                    "0xa70e8dd61c5d32be8058bb8eb970870f07233155",
                    "0x52b93c80364dc2dd4444c146d73b9836bbbb2b3f", "0x0")).send();
    verifyResult("{\"jsonrpc\":\"2.0\",\"method\":\"eth_estimateGas\","
            + "\"params\":[{\"from\":\"0xa70e8dd61c5d32be8058bb8eb970870f07233155\","
            + "\"to\":\"0x52b93c80364dc2dd4444c146d73b9836bbbb2b3f\",\"data\":\"0x0\"}],"
            + "\"id\":1}");
}