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Diffstat (limited to 'createRandomTest.cpp')
| -rw-r--r-- | createRandomTest.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/createRandomTest.cpp b/createRandomTest.cpp new file mode 100644 index 00000000..6f5e9e6f --- /dev/null +++ b/createRandomTest.cpp @@ -0,0 +1,154 @@ +/* + 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/>. +*/ +/** @file createRandomTest.cpp + * @author Christoph Jentzsch <jentzsch.simulationsoftware@gmail.com> + * @date 2014 + * Creating a random virtual machine test. + */ + +#include <string> +#include <iostream> +#include <boost/random.hpp> +#include <boost/chrono.hpp> +#include <boost/filesystem/path.hpp> +#pragma GCC diagnostic ignored "-Wunused-parameter" +#include <json_spirit/json_spirit.h> +#include <json_spirit/json_spirit_reader_template.h> +#include <json_spirit/json_spirit_writer_template.h> +#include <libdevcore/CommonIO.h> +#include <libdevcore/CommonData.h> +#include <libevmface/Instruction.h> +#include "vm.h" + +using namespace std; +using namespace json_spirit; +using namespace dev; + +void doMyTests(json_spirit::mValue& v); + +int main(int argc, char *argv[]) +{ + if (argc!=2) + { + cout << "usage: createRandomTest <filename>\n"; + return 0; + } + + // create random code + + boost::random::mt19937 gen; + + auto now = boost::chrono::steady_clock::now().time_since_epoch(); + auto timeSinceEpoch = boost::chrono::duration_cast<boost::chrono::nanoseconds>(now).count(); + gen.seed(static_cast<unsigned int>(timeSinceEpoch)); + boost::random::uniform_int_distribution<> lengthOfCodeDist(2, 16); + boost::random::uniform_int_distribution<> opcodeDist(0, 255); + boost::random::variate_generator<boost::mt19937&, + boost::random::uniform_int_distribution<> > randGen(gen, opcodeDist); + + int lengthOfCode = lengthOfCodeDist(gen); + string randomCode; + + for (int i = 0; i < lengthOfCode; ++i) + { + randomCode += toHex(toCompactBigEndian(randGen())); + } + + // read template test file + + mValue v; + boost::filesystem::path p(__FILE__); + boost::filesystem::path dir = p.parent_path(); + string s = asString(contents(dir.string() + "/randomTestFiller.json")); + read_string(s, v); + + // insert new random code + v.get_obj().find("randomVMtest")->second.get_obj().find("pre")->second.get_obj().begin()->second.get_obj()["code"] = "0x" + randomCode; + + // execute code in vm + doMyTests(v); + + // write new test + string filename = argv[1]; + writeFile(filename, asBytes(json_spirit::write_string(v, true))); + + return 0; +} + +void doMyTests(json_spirit::mValue& v) +{ + for (auto& i: v.get_obj()) + { + mObject& o = i.second.get_obj(); + + assert(o.count("env") > 0); + assert(o.count("pre") > 0); + assert(o.count("exec") > 0); + + eth::VM vm; + test::FakeExtVM fev; + fev.importEnv(o["env"].get_obj()); + fev.importState(o["pre"].get_obj()); + + o["pre"] = mValue(fev.exportState()); + + fev.importExec(o["exec"].get_obj()); + if (!fev.code) + { + fev.thisTxCode = get<3>(fev.addresses.at(fev.myAddress)); + fev.code = &fev.thisTxCode; + } + + vm.reset(fev.gas); + bytes output; + try + { + output = vm.go(fev).toBytes(); + } + catch (Exception const& _e) + { + cnote << "VM did throw an exception: " << diagnostic_information(_e); + } + catch (std::exception const& _e) + { + cnote << "VM did throw an exception: " << _e.what(); + } + + // delete null entries in storage for the sake of comparison + + for (auto &a: fev.addresses) + { + vector<u256> keystoDelete; + for (auto &s: get<2>(a.second)) + { + if (s.second == 0) + keystoDelete.push_back(s.first); + } + for (auto const key: keystoDelete ) + { + get<2>(a.second).erase(key); + } + } + + o["env"] = mValue(fev.exportEnv()); + o["exec"] = mValue(fev.exportExec()); + o["post"] = mValue(fev.exportState()); + o["callcreates"] = fev.exportCallCreates(); + o["out"] = "0x" + toHex(output); + fev.push(o, "gas", vm.gas()); + } +} |