Gav Wood
10 years ago
10 changed files with 494 additions and 47 deletions
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/*
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This file is part of cpp-ethereum. |
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cpp-ethereum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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cpp-ethereum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/** @file createRandomTest.cpp
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* @author Christoph Jentzsch <jentzsch.simulationsoftware@gmail.com> |
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* @date 2014 |
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* Creating a random virtual machine test. |
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*/ |
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#include <string> |
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#include <iostream> |
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#include <boost/random.hpp> |
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#include <boost/chrono.hpp> |
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#include <boost/filesystem/path.hpp> |
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#pragma GCC diagnostic ignored "-Wunused-parameter" |
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#include <json_spirit/json_spirit.h> |
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#include <json_spirit/json_spirit_reader_template.h> |
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#include <json_spirit/json_spirit_writer_template.h> |
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#include <libdevcore/CommonIO.h> |
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#include <libdevcore/CommonData.h> |
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#include <libevmface/Instruction.h> |
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#include "vm.h" |
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using namespace std; |
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using namespace json_spirit; |
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using namespace dev; |
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void doMyTests(json_spirit::mValue& v); |
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int main(int argc, char *argv[]) |
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{ |
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if (argc != 2) |
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{ |
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cout << "usage: createRandomTest <filename>\n"; |
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return 0; |
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} |
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// create random code
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boost::random::mt19937 gen; |
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auto now = boost::chrono::steady_clock::now().time_since_epoch(); |
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auto timeSinceEpoch = boost::chrono::duration_cast<boost::chrono::nanoseconds>(now).count(); |
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gen.seed(static_cast<unsigned int>(timeSinceEpoch)); |
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boost::random::uniform_int_distribution<> lengthOfCodeDist(2, 16); |
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boost::random::uniform_int_distribution<> opcodeDist(0, 255); |
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boost::random::variate_generator<boost::mt19937&, |
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boost::random::uniform_int_distribution<> > randGen(gen, opcodeDist); |
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int lengthOfCode = lengthOfCodeDist(gen); |
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string randomCode; |
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for (int i = 0; i < lengthOfCode; ++i) |
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{ |
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randomCode += toHex(toCompactBigEndian(randGen())); |
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} |
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// read template test file
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mValue v; |
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boost::filesystem::path p(__FILE__); |
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boost::filesystem::path dir = p.parent_path(); |
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string s = asString(contents(dir.string() + "/randomTestFiller.json")); |
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read_string(s, v); |
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// insert new random code
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v.get_obj().find("randomVMtest")->second.get_obj().find("pre")->second.get_obj().begin()->second.get_obj()["code"] = "0x" + randomCode; |
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// execute code in vm
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doMyTests(v); |
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// write new test
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string filename = argv[1]; |
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writeFile(filename, asBytes(json_spirit::write_string(v, true))); |
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return 0; |
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} |
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void doMyTests(json_spirit::mValue& v) |
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{ |
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for (auto& i: v.get_obj()) |
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{ |
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mObject& o = i.second.get_obj(); |
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assert(o.count("env") > 0); |
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assert(o.count("pre") > 0); |
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assert(o.count("exec") > 0); |
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eth::VM vm; |
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test::FakeExtVM fev; |
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fev.importEnv(o["env"].get_obj()); |
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fev.importState(o["pre"].get_obj()); |
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o["pre"] = mValue(fev.exportState()); |
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fev.importExec(o["exec"].get_obj()); |
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if (!fev.code) |
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{ |
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fev.thisTxCode = get<3>(fev.addresses.at(fev.myAddress)); |
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fev.code = &fev.thisTxCode; |
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} |
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vm.reset(fev.gas); |
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bytes output; |
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try |
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{ |
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output = vm.go(fev).toBytes(); |
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} |
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catch (Exception const& _e) |
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{ |
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cnote << "VM did throw an exception: " << diagnostic_information(_e); |
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} |
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catch (std::exception const& _e) |
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{ |
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cnote << "VM did throw an exception: " << _e.what(); |
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} |
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// delete null entries in storage for the sake of comparison
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for (auto &a: fev.addresses) |
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{ |
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vector<u256> keystoDelete; |
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for (auto &s: get<2>(a.second)) |
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{ |
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if (s.second == 0) |
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keystoDelete.push_back(s.first); |
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} |
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for (auto const key: keystoDelete ) |
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{ |
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get<2>(a.second).erase(key); |
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} |
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} |
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o["env"] = mValue(fev.exportEnv()); |
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o["exec"] = mValue(fev.exportExec()); |
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o["post"] = mValue(fev.exportState()); |
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o["callcreates"] = fev.exportCallCreates(); |
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o["out"] = "0x" + toHex(output); |
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fev.push(o, "gas", vm.gas()); |
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} |
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} |
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@ -0,0 +1,29 @@ |
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{ |
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"randomVMtest": { |
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"env" : { |
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"previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6", |
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"currentNumber" : "0", |
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"currentGasLimit" : "1000000", |
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"currentDifficulty" : "256", |
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"currentTimestamp" : 1, |
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"currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba" |
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}, |
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"pre" : { |
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"0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : { |
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"balance" : "1000000000000000000", |
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"nonce" : 0, |
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"code" : "random", |
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"storage": {} |
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} |
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}, |
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"exec" : { |
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"address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6", |
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"origin" : "cd1722f3947def4cf144679da39c4c32bdc35681", |
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"caller" : "cd1722f3947def4cf144679da39c4c32bdc35681", |
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"value" : "1000000000000000000", |
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"data" : "", |
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"gasPrice" : "100000000000000", |
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"gas" : "10000" |
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} |
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} |
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} |
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