Some tests for BlockChainSync

test/unittests/libethereum/BlockChainSyncTest.cpp

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+/*
+    This file is part of cpp-ethereum.
+
+    cpp-ethereum is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    cpp-ethereum 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <libdevcore/TransientDirectory.h>
+#include <libwebthree/WebThree.h>
+#include <test/tools/libtesteth/TestOutputHelper.h>
+#include <test/tools/libtesteth/TestHelper.h>
+#include <boost/test/unit_test.hpp>
+
+namespace dev
+{
+namespace test
+{
+namespace
+{
+struct BlockChainSyncFixture: public TestOutputHelperFixture
+{
+    BlockChainSyncFixture()
+    {
+        // TODO this will not work wth parallel tests
+        p2p::NetworkPreferences nprefs1("127.0.0.1", p2p::c_defaultListenPort);
+        nprefs1.discovery = false;
+        eth::ChainParams chainParams;
+        chainParams.sealEngineName = eth::NoProof::name();
+        chainParams.allowFutureBlocks = true;
+        chainParams.daoHardforkBlock = 0;
+        chainParams.difficulty = chainParams.minimumDifficulty;
+        chainParams.gasLimit = chainParams.maxGasLimit;
+        // add random extra data to randomize genesis hash and get random DB path,
+        // so that tests can be run in parallel
+        // TODO: better make it use ethemeral in-memory databases
+        chainParams.extraData = h256::random().asBytes();
+        web3Node1.reset(new WebThreeDirect(
+            "testclient1", dbDir1.path(), "", chainParams, WithExisting::Kill, {"eth"}, nprefs1));
+
+        //web3->setIdealPeerCount(5);
+
+        web3Node1->ethereum()->setAuthor(coinbase.address());
+
+        web3Node1->startNetwork();
+
+        p2p::NetworkPreferences nprefs2("127.0.0.1", p2p::c_defaultListenPort + 1);
+        nprefs2.discovery = false;
+        web3Node2.reset(new WebThreeDirect(
+            "testclient2", dbDir2.path(), "", chainParams, WithExisting::Kill, {"eth"}, nprefs2));
+
+        web3Node2->startNetwork();
+    }
+
+    TransientDirectory dbDir1;
+    std::unique_ptr<WebThreeDirect> web3Node1;
+    TransientDirectory dbDir2;
+    std::unique_ptr<WebThreeDirect> web3Node2;
+    KeyPair coinbase{KeyPair::create()};
+};
+
+}
+
+BOOST_FIXTURE_TEST_SUITE(BlockChainSyncSuite, BlockChainSyncFixture)
+
+
+BOOST_AUTO_TEST_CASE(syncFromMiner)
+{
+    dev::eth::mine(*(web3Node1->ethereum()), 10);
+
+    int blocksImported = 0;
+    std::promise<void> allBlocksImported;
+    auto importHandler =
+        web3Node2->ethereum()->setOnBlockImport([&blocksImported, &allBlocksImported](eth::BlockHeader const&) {
+        if (++blocksImported == 10)
+            allBlocksImported.set_value();
+    });
+
+    //    p2p::NodeSpec node2spec{"127.0.0.1", p2p::c_defaultListenPort + 1};
+//    web3Node1->addPeer(/*web3Node2->enode()*/node2spec, p2p::PeerType::Required);
+    web3Node1->requirePeer(web3Node2->id(), "127.0.0.1:30304");
+
+    allBlocksImported.get_future().wait_for(std::chrono::minutes(1));
+
+    BOOST_REQUIRE_EQUAL(blocksImported, 10);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+}
+}