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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @date 2017
* Unit tests for the metadata output.
*/
#include "../Metadata.h"
#include "../TestHelper.h"
#include <libsolidity/interface/CompilerStack.h>
#include <libdevcore/SwarmHash.h>
namespace dev
{
namespace solidity
{
namespace test
{
BOOST_AUTO_TEST_SUITE(Metadata)
BOOST_AUTO_TEST_CASE(metadata_stamp)
{
// Check that the metadata stamp is at the end of the runtime bytecode.
char const* sourceCode = R"(
pragma solidity >=0.0;
contract test {
function g(function(uint) external returns (uint) x) {}
}
)";
CompilerStack compilerStack;
compilerStack.addSource("", std::string(sourceCode));
/// NOTE: compiles without optimisations
ETH_TEST_REQUIRE_NO_THROW(compilerStack.compile(), "Compiling contract failed");
bytes const& bytecode = compilerStack.runtimeObject("test").bytecode;
std::string const& metadata = compilerStack.onChainMetadata("test");
BOOST_CHECK(dev::test::isValidMetadata(metadata));
bytes hash = dev::swarmHash(metadata).asBytes();
BOOST_REQUIRE(hash.size() == 32);
BOOST_REQUIRE(bytecode.size() >= 2);
size_t metadataCBORSize = (size_t(bytecode.end()[-2]) << 8) + size_t(bytecode.end()[-1]);
BOOST_REQUIRE(metadataCBORSize < bytecode.size() - 2);
bytes expectation = bytes{0xa1, 0x65, 'b', 'z', 'z', 'r', '0', 0x58, 0x20} + hash;
BOOST_CHECK(std::equal(expectation.begin(), expectation.end(), bytecode.end() - metadataCBORSize - 2));
}
BOOST_AUTO_TEST_SUITE_END()
}
}
}
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