/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.mine;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.ethereum.config.SystemProperties;
import org.ethereum.config.blockchain.FrontierConfig;
import org.ethereum.core.Block;
import org.ethereum.core.BlockHeader;
import org.ethereum.core.BlockchainImpl;
import org.ethereum.core.ImportResult;
import org.ethereum.db.PruneManager;
import org.ethereum.facade.Ethereum;
import org.ethereum.facade.EthereumImpl;
import org.ethereum.listener.CompositeEthereumListener;
import org.ethereum.util.ByteUtil;
import org.ethereum.util.blockchain.LocalBlockchain;
import org.ethereum.util.blockchain.StandaloneBlockchain;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.springframework.beans.factory.annotation.Autowired;
import javax.annotation.Resource;
import java.math.BigInteger;
import static java.util.Collections.*;
import static org.hamcrest.CoreMatchers.*;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.when;
/**
* Creates an instance
*/
public class ExternalMinerTest {
private StandaloneBlockchain bc = new StandaloneBlockchain().withAutoblock(false);
private CompositeEthereumListener listener = new CompositeEthereumListener();
@Mock
private EthereumImpl ethereum;
@InjectMocks
@Resource
private BlockMiner blockMiner = new BlockMiner(SystemProperties.getDefault(), listener, bc.getBlockchain(),
bc.getBlockchain().getBlockStore(), bc.getPendingState());;
@Before
public void setup() {
SystemProperties.getDefault().setBlockchainConfig(new FrontierConfig(new FrontierConfig.FrontierConstants() {
@Override
public BigInteger getMINIMUM_DIFFICULTY() {
return BigInteger.ONE;
}
}));
// Initialize mocks created above
MockitoAnnotations.initMocks(this);
when(ethereum.addNewMinedBlock(any(Block.class))).thenAnswer(new Answer<ImportResult>() {
@Override
public ImportResult answer(InvocationOnMock invocation) throws Throwable {
Block block = (Block) invocation.getArguments()[0];
return bc.getBlockchain().tryToConnect(block);
}
});
}
@Test
public void externalMiner_shouldWork() throws Exception {
final Block startBestBlock = bc.getBlockchain().getBestBlock();
final SettableFuture<MinerIfc.MiningResult> futureBlock = SettableFuture.create();
blockMiner.setExternalMiner(new MinerIfc() {
@Override
public ListenableFuture<MiningResult> mine(Block block) {
// System.out.print("Mining requested");
return futureBlock;
}
@Override
public boolean validate(BlockHeader blockHeader) {
return true;
}
});
Block b = bc.getBlockchain().createNewBlock(startBestBlock, EMPTY_LIST, EMPTY_LIST);
Ethash.getForBlock(SystemProperties.getDefault(), b.getNumber()).mineLight(b).get();
futureBlock.set(new MinerIfc.MiningResult(ByteUtil.byteArrayToLong(b.getNonce()), b.getMixHash(), b));
assertThat(bc.getBlockchain().getBestBlock().getNumber(), is(startBestBlock.getNumber() + 1));
}
}