@Test(expected = RuntimeException.class)
public void addedBlockShouldHaveIncrementedBlockNumber() throws Exception {

    BlockchainConfig blockchainConfig = new TestBlockchainConfig();
    BaseNetConfig config = new BaseNetConfig();
    config.add(0, blockchainConfig);
    config.add(1, blockchainConfig);
    config.add(0, blockchainConfig);
}