solidity/test/libsolidity/StandardCompiler.cpp

/*
	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/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
 * @date 2017
 * Unit tests for interface/StandardCompiler.h.
 */

#include <string>
#include <boost/test/unit_test.hpp>
#include <libsolidity/interface/OptimiserSettings.h>
#include <libsolidity/interface/StandardCompiler.h>
#include <libsolidity/interface/Version.h>
#include <libsolutil/JSON.h>
#include <libsolutil/CommonData.h>
#include <test/Metadata.h>

#include <algorithm>
#include <set>

using namespace std;
using namespace solidity::evmasm;

namespace solidity::frontend::test
{

namespace
{

/// Helper to match a specific error type and message
bool containsError(Json::Value const& _compilerResult, string const& _type, string const& _message)
{
	if (!_compilerResult.isMember("errors"))
		return false;

	for (auto const& error: _compilerResult["errors"])
	{
		BOOST_REQUIRE(error.isObject());
		BOOST_REQUIRE(error["type"].isString());
		BOOST_REQUIRE(error["message"].isString());
		if ((error["type"].asString() == _type) && (error["message"].asString() == _message))
			return true;
	}

	return false;
}

bool containsAtMostWarnings(Json::Value const& _compilerResult)
{
	if (!_compilerResult.isMember("errors"))
		return true;

	for (auto const& error: _compilerResult["errors"])
	{
		BOOST_REQUIRE(error.isObject());
		BOOST_REQUIRE(error["severity"].isString());
		if (error["severity"].asString() != "warning")
			return false;
	}

	return true;
}

Json::Value getContractResult(Json::Value const& _compilerResult, string const& _file, string const& _name)
{
	if (
		!_compilerResult["contracts"].isObject() ||
		!_compilerResult["contracts"][_file].isObject() ||
		!_compilerResult["contracts"][_file][_name].isObject()
	)
		return Json::Value();
	return _compilerResult["contracts"][_file][_name];
}

Json::Value compile(string _input)
{
	StandardCompiler compiler;
	string output = compiler.compile(std::move(_input));
	Json::Value ret;
	BOOST_REQUIRE(util::jsonParseStrict(output, ret));
	return ret;
}

} // end anonymous namespace

BOOST_AUTO_TEST_SUITE(StandardCompiler)

BOOST_AUTO_TEST_CASE(assume_object_input)
{
	Json::Value result;

	/// Use the native JSON interface of StandardCompiler to trigger these
	frontend::StandardCompiler compiler;
	result = compiler.compile(Json::Value());
	BOOST_CHECK(containsError(result, "JSONError", "Input is not a JSON object."));
	result = compiler.compile(Json::Value("INVALID"));
	BOOST_CHECK(containsError(result, "JSONError", "Input is not a JSON object."));

	/// Use the string interface of StandardCompiler to trigger these
	result = compile("");
	BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n  Syntax error: value, object or array expected.\n* Line 1, Column 1\n  A valid JSON document must be either an array or an object value.\n"));
	result = compile("invalid");
	BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n  Syntax error: value, object or array expected.\n* Line 1, Column 2\n  Extra non-whitespace after JSON value.\n"));
	result = compile("\"invalid\"");
	BOOST_CHECK(containsError(result, "JSONError", "* Line 1, Column 1\n  A valid JSON document must be either an array or an object value.\n"));
	BOOST_CHECK(!containsError(result, "JSONError", "* Line 1, Column 1\n  Syntax error: value, object or array expected.\n"));
	result = compile("{}");
	BOOST_CHECK(!containsError(result, "JSONError", "* Line 1, Column 1\n  Syntax error: value, object or array expected.\n"));
	BOOST_CHECK(!containsAtMostWarnings(result));
}

BOOST_AUTO_TEST_CASE(invalid_language)
{
	char const* input = R"(
	{
		"language": "INVALID",
		"sources": { "name": { "content": "abc" } }
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Only \"Solidity\" or \"Yul\" is supported as a language."));
}

BOOST_AUTO_TEST_CASE(valid_language)
{
	char const* input = R"(
	{
		"language": "Solidity"
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(!containsError(result, "JSONError", "Only \"Solidity\" or \"Yul\" is supported as a language."));
}

BOOST_AUTO_TEST_CASE(no_sources)
{
	char const* input = R"(
	{
		"language": "Solidity"
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "No input sources specified."));
}

BOOST_AUTO_TEST_CASE(no_sources_empty_object)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": {}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "No input sources specified."));
}

BOOST_AUTO_TEST_CASE(no_sources_empty_array)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": []
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "\"sources\" is not a JSON object."));
}

BOOST_AUTO_TEST_CASE(sources_is_array)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": ["aa", "bb"]
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "\"sources\" is not a JSON object."));
}

BOOST_AUTO_TEST_CASE(unexpected_trailing_test)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": {
			"A": {
				"content": "contract A { function f() {} }"
			}
		}
	}
	}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "* Line 10, Column 2\n  Extra non-whitespace after JSON value.\n"));
}

BOOST_AUTO_TEST_CASE(smoke_test)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
}

BOOST_AUTO_TEST_CASE(error_recovery_field)
{
	auto input = R"(
	{
		"language": "Solidity",
		"settings": {
			"parserErrorRecovery": "1"
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";

	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "\"settings.parserErrorRecovery\" must be a Boolean."));

	input = R"(
	{
		"language": "Solidity",
		"settings": {
			"parserErrorRecovery": true
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";

	result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
}

BOOST_AUTO_TEST_CASE(optimizer_enabled_not_boolean)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"optimizer": {
				"enabled": "wrong"
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "The \"enabled\" setting must be a Boolean."));
}

BOOST_AUTO_TEST_CASE(optimizer_runs_not_a_number)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"optimizer": {
				"enabled": true,
				"runs": "not a number"
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "The \"runs\" setting must be an unsigned number."));
}

BOOST_AUTO_TEST_CASE(optimizer_runs_not_an_unsigned_number)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"optimizer": {
				"enabled": true,
				"runs": -1
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "The \"runs\" setting must be an unsigned number."));
}

BOOST_AUTO_TEST_CASE(basic_compilation)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		},
		"settings": {
			"outputSelection": {
				"fileA": {
					"A": [ "abi", "devdoc", "userdoc", "evm.bytecode", "evm.assembly", "evm.gasEstimates", "evm.legacyAssembly", "metadata" ],
					"": [ "legacyAST" ]
				}
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
	BOOST_CHECK(contract["devdoc"].isObject());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["devdoc"]), R"({"kind":"dev","methods":{},"version":1})");
	BOOST_CHECK(contract["userdoc"].isObject());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["userdoc"]), R"({"kind":"user","methods":{},"version":1})");
	BOOST_CHECK(contract["evm"].isObject());
	/// @TODO check evm.methodIdentifiers, legacyAssembly, bytecode, deployedBytecode
	BOOST_CHECK(contract["evm"]["bytecode"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["object"].isString());
	BOOST_CHECK_EQUAL(
		solidity::test::bytecodeSansMetadata(contract["evm"]["bytecode"]["object"].asString()),
		string("6080604052348015600f57600080fd5b5060") +
		(VersionIsRelease ? "3f" : util::toHex(bytes{uint8_t(61 + VersionStringStrict.size())})) +
		"80601d6000396000f3fe6080604052600080fdfe"
	);
	BOOST_CHECK(contract["evm"]["assembly"].isString());
	BOOST_CHECK(contract["evm"]["assembly"].asString().find(
		"    /* \"fileA\":0:14  contract A { } */\n  mstore(0x40, 0x80)\n  "
		"callvalue\n  dup1\n  "
		"iszero\n  tag_1\n  jumpi\n  "
		"0x00\n  "
		"dup1\n  revert\n"
		"tag_1:\n  pop\n  dataSize(sub_0)\n  dup1\n  "
		"dataOffset(sub_0)\n  0x00\n  codecopy\n  0x00\n  return\nstop\n\nsub_0: assembly {\n        "
		"/* \"fileA\":0:14  contract A { } */\n      mstore(0x40, 0x80)\n      "
		"0x00\n      "
		"dup1\n      revert\n\n    auxdata: 0xa26469706673582212"
	) == 0);
	BOOST_CHECK(contract["evm"]["gasEstimates"].isObject());
	BOOST_CHECK_EQUAL(contract["evm"]["gasEstimates"].size(), 1);
	BOOST_CHECK(contract["evm"]["gasEstimates"]["creation"].isObject());
	BOOST_CHECK_EQUAL(contract["evm"]["gasEstimates"]["creation"].size(), 3);
	BOOST_CHECK(contract["evm"]["gasEstimates"]["creation"]["codeDepositCost"].isString());
	BOOST_CHECK(contract["evm"]["gasEstimates"]["creation"]["executionCost"].isString());
	BOOST_CHECK(contract["evm"]["gasEstimates"]["creation"]["totalCost"].isString());
	BOOST_CHECK_EQUAL(
		u256(contract["evm"]["gasEstimates"]["creation"]["codeDepositCost"].asString()) +
		u256(contract["evm"]["gasEstimates"]["creation"]["executionCost"].asString()),
		u256(contract["evm"]["gasEstimates"]["creation"]["totalCost"].asString())
	);
	// Lets take the top level `.code` section (the "deployer code"), that should expose most of the features of
	// the assembly JSON. What we want to check here is Operation, Push, PushTag, PushSub, PushSubSize and Tag.
	BOOST_CHECK(contract["evm"]["legacyAssembly"].isObject());
	BOOST_CHECK(contract["evm"]["legacyAssembly"][".code"].isArray());
	BOOST_CHECK_EQUAL(
		util::jsonCompactPrint(contract["evm"]["legacyAssembly"][".code"]),
		"[{\"begin\":0,\"end\":14,\"name\":\"PUSH\",\"source\":0,\"value\":\"80\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH\",\"source\":0,\"value\":\"40\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"MSTORE\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"CALLVALUE\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"DUP1\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"ISZERO\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH [tag]\",\"source\":0,\"value\":\"1\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"JUMPI\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH\",\"source\":0,\"value\":\"0\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"DUP1\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"REVERT\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"tag\",\"source\":0,\"value\":\"1\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"JUMPDEST\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"POP\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH #[$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"DUP1\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH [$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH\",\"source\":0,\"value\":\"0\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"CODECOPY\",\"source\":0},"
		"{\"begin\":0,\"end\":14,\"name\":\"PUSH\",\"source\":0,\"value\":\"0\"},"
		"{\"begin\":0,\"end\":14,\"name\":\"RETURN\",\"source\":0}]"
	);
	BOOST_CHECK(contract["metadata"].isString());
	BOOST_CHECK(solidity::test::isValidMetadata(contract["metadata"].asString()));
	BOOST_CHECK(result["sources"].isObject());
	BOOST_CHECK(result["sources"]["fileA"].isObject());
	BOOST_CHECK(result["sources"]["fileA"]["legacyAST"].isObject());
	BOOST_CHECK_EQUAL(
		util::jsonCompactPrint(result["sources"]["fileA"]["legacyAST"]),
		"{\"attributes\":{\"absolutePath\":\"fileA\",\"exportedSymbols\":{\"A\":[1]}},\"children\":"
		"[{\"attributes\":{\"abstract\":false,\"baseContracts\":[null],\"contractDependencies\":[null],\"contractKind\":\"contract\","
		"\"fullyImplemented\":true,\"linearizedBaseContracts\":[1],\"name\":\"A\",\"nodes\":[null],\"scope\":2},"
		"\"id\":1,\"name\":\"ContractDefinition\",\"src\":\"0:14:0\"}],\"id\":2,\"name\":\"SourceUnit\",\"src\":\"0:14:0\"}"
	);
}

BOOST_AUTO_TEST_CASE(compilation_error)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { function }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(result.isMember("errors"));
	BOOST_CHECK(result["errors"].size() >= 1);
	for (auto const& error: result["errors"])
	{
		BOOST_REQUIRE(error.isObject());
		BOOST_REQUIRE(error["message"].isString());
		if (error["message"].asString().find("pre-release compiler") == string::npos)
		{
			BOOST_CHECK_EQUAL(
				util::jsonCompactPrint(error),
				"{\"component\":\"general\",\"errorCode\":\"2314\",\"formattedMessage\":\"fileA:1:23: ParserError: Expected identifier but got '}'\\n"
				"contract A { function }\\n                      ^\\n\",\"message\":\"Expected identifier but got '}'\","
				"\"severity\":\"error\",\"sourceLocation\":{\"end\":23,\"file\":\"fileA\",\"start\":22},\"type\":\"ParserError\"}"
			);
		}
	}
}

BOOST_AUTO_TEST_CASE(output_selection_explicit)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
}

BOOST_AUTO_TEST_CASE(output_selection_all_contracts)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": {
					"*": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
}

BOOST_AUTO_TEST_CASE(output_selection_all_files_single_contract)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"*": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
}

BOOST_AUTO_TEST_CASE(output_selection_all_files_all_contracts)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"*": {
					"*": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
}

BOOST_AUTO_TEST_CASE(output_selection_dependent_contract)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"*": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract B { } contract A { function f() public { new B(); } }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[{\"inputs\":[],\"name\":\"f\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]");
}

BOOST_AUTO_TEST_CASE(output_selection_dependent_contract_with_import)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"*": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "import \"fileB\"; contract A { function f() public { new B(); } }"
			},
			"fileB": {
				"content": "contract B { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[{\"inputs\":[],\"name\":\"f\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]");
}

BOOST_AUTO_TEST_CASE(filename_with_colon)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"http://github.com/ethereum/solidity/std/StandardToken.sol": {
					"A": [
						"abi"
					]
				}
			}
		},
		"sources": {
			"http://github.com/ethereum/solidity/std/StandardToken.sol": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "http://github.com/ethereum/solidity/std/StandardToken.sol", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["abi"].isArray());
	BOOST_CHECK_EQUAL(util::jsonCompactPrint(contract["abi"]), "[]");
}

BOOST_AUTO_TEST_CASE(library_filename_with_colon)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": {
					"A": [
						"evm.bytecode"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "import \"git:library.sol\"; contract A { function f() public returns (uint) { return L.g(); } }"
			},
			"git:library.sol": {
				"content": "library L { function g() public returns (uint) { return 1; } }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["evm"]["bytecode"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["git:library.sol"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["git:library.sol"]["L"].isArray());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["git:library.sol"]["L"][0].isObject());
}

BOOST_AUTO_TEST_CASE(libraries_invalid_top_level)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": "42"
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "\"libraries\" is not a JSON object."));
}

BOOST_AUTO_TEST_CASE(libraries_invalid_entry)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": {
				"L": "42"
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Library entry is not a JSON object."));
}

BOOST_AUTO_TEST_CASE(libraries_invalid_hex)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": {
				"library.sol": {
					"L": "0x4200000000000000000000000000000000000xx1"
				}
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Invalid library address (\"0x4200000000000000000000000000000000000xx1\") supplied."));
}

BOOST_AUTO_TEST_CASE(libraries_invalid_length)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": {
				"library.sol": {
					"L1": "0x42",
					"L2": "0x4200000000000000000000000000000000000001ff"
				}
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Library address is of invalid length."));
}

BOOST_AUTO_TEST_CASE(libraries_missing_hex_prefix)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": {
				"library.sol": {
					"L": "4200000000000000000000000000000000000001"
				}
			}
		},
		"sources": {
			"empty": {
				"content": ""
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Library address is not prefixed with \"0x\"."));
}

BOOST_AUTO_TEST_CASE(library_linking)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"libraries": {
				"library.sol": {
					"L": "0x4200000000000000000000000000000000000001"
				}
			},
			"outputSelection": {
				"fileA": {
					"A": [
						"evm.bytecode"
					]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "import \"library.sol\"; import \"library2.sol\"; contract A { function f() public returns (uint) { L2.g(); return L.g(); } }"
			},
			"library.sol": {
				"content": "library L { function g() public returns (uint) { return 1; } }"
			},
			"library2.sol": {
				"content": "library L2 { function g() public { } }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["evm"]["bytecode"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"].isObject());
	BOOST_CHECK(!contract["evm"]["bytecode"]["linkReferences"]["library.sol"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["library2.sol"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["library2.sol"]["L2"].isArray());
	BOOST_CHECK(contract["evm"]["bytecode"]["linkReferences"]["library2.sol"]["L2"][0].isObject());
}

BOOST_AUTO_TEST_CASE(evm_version)
{
	auto inputForVersion = [](string const& _version)
	{
		return R"(
			{
				"language": "Solidity",
				"sources": { "fileA": { "content": "contract A { }" } },
				"settings": {
					)" + _version + R"(
					"outputSelection": {
						"fileA": {
							"A": [ "metadata" ]
						}
					}
				}
			}
		)";
	};
	Json::Value result;
	result = compile(inputForVersion("\"evmVersion\": \"homestead\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"homestead\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"tangerineWhistle\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"tangerineWhistle\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"spuriousDragon\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"spuriousDragon\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"byzantium\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"byzantium\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"constantinople\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"constantinople\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"petersburg\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"petersburg\"") != string::npos);
	result = compile(inputForVersion("\"evmVersion\": \"istanbul\","));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"istanbul\"") != string::npos);
	// test default
	result = compile(inputForVersion(""));
	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"istanbul\"") != string::npos);
	// test invalid
	result = compile(inputForVersion("\"evmVersion\": \"invalid\","));
	BOOST_CHECK(result["errors"][0]["message"].asString() == "Invalid EVM version requested.");
}

BOOST_AUTO_TEST_CASE(optimizer_settings_default_disabled)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": { "A": [ "metadata" ] }
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	Json::Value metadata;
	BOOST_CHECK(util::jsonParseStrict(contract["metadata"].asString(), metadata));

	Json::Value const& optimizer = metadata["settings"]["optimizer"];
	BOOST_CHECK(optimizer.isMember("enabled"));
	BOOST_CHECK(optimizer["enabled"].asBool() == false);
	BOOST_CHECK(!optimizer.isMember("details"));
	BOOST_CHECK(optimizer["runs"].asUInt() == 200);
}

BOOST_AUTO_TEST_CASE(optimizer_settings_default_enabled)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": { "A": [ "metadata" ] }
			},
			"optimizer": { "enabled": true }
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	Json::Value metadata;
	BOOST_CHECK(util::jsonParseStrict(contract["metadata"].asString(), metadata));

	Json::Value const& optimizer = metadata["settings"]["optimizer"];
	BOOST_CHECK(optimizer.isMember("enabled"));
	BOOST_CHECK(optimizer["enabled"].asBool() == true);
	BOOST_CHECK(!optimizer.isMember("details"));
	BOOST_CHECK(optimizer["runs"].asUInt() == 200);
}

BOOST_AUTO_TEST_CASE(optimizer_settings_details_exactly_as_default_disabled)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": { "A": [ "metadata" ] }
			},
			"optimizer": { "details": {
				"constantOptimizer" : false,
				"cse" : false,
				"deduplicate" : false,
				"jumpdestRemover" : true,
				"orderLiterals" : false,
				"peephole" : true
			} }
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	Json::Value metadata;
	BOOST_CHECK(util::jsonParseStrict(contract["metadata"].asString(), metadata));

	Json::Value const& optimizer = metadata["settings"]["optimizer"];
	BOOST_CHECK(optimizer.isMember("enabled"));
	// enabled is switched to false instead!
	BOOST_CHECK(optimizer["enabled"].asBool() == false);
	BOOST_CHECK(!optimizer.isMember("details"));
	BOOST_CHECK(optimizer["runs"].asUInt() == 200);
}

BOOST_AUTO_TEST_CASE(optimizer_settings_details_different)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": { "A": [ "metadata" ] }
			},
			"optimizer": { "runs": 600, "details": {
				"constantOptimizer" : true,
				"cse" : false,
				"deduplicate" : true,
				"jumpdestRemover" : true,
				"orderLiterals" : false,
				"peephole" : true,
				"yul": true
			} }
		},
		"sources": {
			"fileA": {
				"content": "contract A { }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	Json::Value metadata;
	BOOST_CHECK(util::jsonParseStrict(contract["metadata"].asString(), metadata));

	Json::Value const& optimizer = metadata["settings"]["optimizer"];
	BOOST_CHECK(!optimizer.isMember("enabled"));
	BOOST_CHECK(optimizer.isMember("details"));
	BOOST_CHECK(optimizer["details"]["constantOptimizer"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["cse"].asBool() == false);
	BOOST_CHECK(optimizer["details"]["deduplicate"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["jumpdestRemover"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["orderLiterals"].asBool() == false);
	BOOST_CHECK(optimizer["details"]["peephole"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["yul"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["yulDetails"].isObject());
	BOOST_CHECK(
		util::convertContainer<set<string>>(optimizer["details"]["yulDetails"].getMemberNames()) ==
		(set<string>{"stackAllocation", "optimizerSteps"})
	);
	BOOST_CHECK(optimizer["details"]["yulDetails"]["stackAllocation"].asBool() == true);
	BOOST_CHECK(optimizer["details"]["yulDetails"]["optimizerSteps"].asString() == OptimiserSettings::DefaultYulOptimiserSteps);
	BOOST_CHECK_EQUAL(optimizer["details"].getMemberNames().size(), 8);
	BOOST_CHECK(optimizer["runs"].asUInt() == 600);
}

BOOST_AUTO_TEST_CASE(metadata_without_compilation)
{
	// NOTE: the contract code here should fail to compile due to "out of stack"
	// If the metadata is successfully returned, that means no compilation was attempted.
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"fileA": { "A": [ "metadata" ] }
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A {
  function x(uint a, uint b, uint c, uint d, uint e, uint f, uint g, uint h, uint i, uint j, uint k, uint l, uint m, uint n, uint o, uint p) pure public {}
  function y() pure public {
    uint a; uint b; uint c; uint d; uint e; uint f; uint g; uint h; uint i; uint j; uint k; uint l; uint m; uint n; uint o; uint p;
    x(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p);
  }
}"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	BOOST_CHECK(solidity::test::isValidMetadata(contract["metadata"].asString()));
}


BOOST_AUTO_TEST_CASE(license_in_metadata)
{
	string const input = R"(
			{
				"language": "Solidity",
				"sources": {
					"fileA": { "content": "import \"fileB\"; contract A { } // SPDX-License-Identifier: GPL-3.0 \n" },
					"fileB": { "content": "import \"fileC\"; /* SPDX-License-Identifier: MIT */ contract B { }" },
					"fileC": { "content": "import \"fileD\"; /* SPDX-License-Identifier: MIT AND GPL-3.0 */ contract C { }" },
					"fileD": { "content": "// SPDX-License-Identifier: (GPL-3.0+ OR MIT) AND MIT \n import \"fileE\"; contract D { }" },
					"fileE": { "content": "import \"fileF\"; /// SPDX-License-Identifier: MIT   \n contract E { }" },
					"fileF": { "content": "/*\n * SPDX-License-Identifier: MIT\n */ contract F { }" }
				},
				"settings": {
					"outputSelection": {
						"fileA": {
							"*": [ "metadata" ]
						}
					}
				}
			}
		)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	Json::Value metadata;
	BOOST_REQUIRE(util::jsonParseStrict(contract["metadata"].asString(), metadata));
	BOOST_CHECK_EQUAL(metadata["sources"]["fileA"]["license"], "GPL-3.0");
	BOOST_CHECK_EQUAL(metadata["sources"]["fileB"]["license"], "MIT");
	BOOST_CHECK_EQUAL(metadata["sources"]["fileC"]["license"], "MIT AND GPL-3.0");
	BOOST_CHECK_EQUAL(metadata["sources"]["fileD"]["license"], "(GPL-3.0+ OR MIT) AND MIT");
	// This is actually part of the docstring, but still picked up
	// because the source location of the contract does not cover the docstring.
	BOOST_CHECK_EQUAL(metadata["sources"]["fileE"]["license"], "MIT");
	BOOST_CHECK_EQUAL(metadata["sources"]["fileF"]["license"], "MIT");
}

BOOST_AUTO_TEST_CASE(common_pattern)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"outputSelection": {
				"*": {
					"*": [ "evm.bytecode.object", "metadata" ]
				}
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A { function f() pure public {} }"
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_CHECK(contract.isObject());
	BOOST_CHECK(contract["metadata"].isString());
	BOOST_CHECK(solidity::test::isValidMetadata(contract["metadata"].asString()));
	BOOST_CHECK(contract["evm"]["bytecode"].isObject());
	BOOST_CHECK(contract["evm"]["bytecode"]["object"].isString());
}

BOOST_AUTO_TEST_CASE(use_stack_optimization)
{
	// NOTE: the contract code here should fail to compile due to "out of stack"
	// If we enable stack optimization, though, it will compile.
	char const* input = R"(
	{
		"language": "Solidity",
		"settings": {
			"optimizer": { "enabled": true, "details": { "yul": true } },
			"outputSelection": {
				"fileA": { "A": [ "evm.bytecode.object" ] }
			}
		},
		"sources": {
			"fileA": {
				"content": "contract A {
					function y() public {
						assembly {
							function fun() -> a3, b3, c3, d3, e3, f3, g3, h3, i3, j3, k3, l3, m3, n3, o3, p3
							{
								let a := 1
								let b := 1
								let z3 := 1
								sstore(a, b)
								sstore(add(a, 1), b)
								sstore(add(a, 2), b)
								sstore(add(a, 3), b)
								sstore(add(a, 4), b)
								sstore(add(a, 5), b)
								sstore(add(a, 6), b)
								sstore(add(a, 7), b)
								sstore(add(a, 8), b)
								sstore(add(a, 9), b)
								sstore(add(a, 10), b)
								sstore(add(a, 11), b)
								sstore(add(a, 12), b)
							}
							let a1, b1, c1, d1, e1, f1, g1, h1, i1, j1, k1, l1, m1, n1, o1, p1 := fun()
							let a2, b2, c2, d2, e2, f2, g2, h2, i2, j2, k2, l2, m2, n2, o2, p2 := fun()
							sstore(a1, a2)
						}
					}
				}"
			}
		}
	}
	)";

	Json::Value parsedInput;
	BOOST_REQUIRE(util::jsonParseStrict(input, parsedInput));

	solidity::frontend::StandardCompiler compiler;
	Json::Value result = compiler.compile(parsedInput);

	BOOST_CHECK(containsAtMostWarnings(result));
	Json::Value contract = getContractResult(result, "fileA", "A");
	BOOST_REQUIRE(contract.isObject());
	BOOST_REQUIRE(contract["evm"]["bytecode"]["object"].isString());
	BOOST_CHECK(contract["evm"]["bytecode"]["object"].asString().length() > 20);

	// Now disable stack optimizations and UnusedFunctionParameterPruner (p)
	// results in "stack too deep"
	string optimiserSteps = OptimiserSettings::DefaultYulOptimiserSteps;
	optimiserSteps.erase(
		remove_if(optimiserSteps.begin(), optimiserSteps.end(), [](char ch) { return ch == 'p'; }),
		optimiserSteps.end()
	);
	parsedInput["settings"]["optimizer"]["details"]["yulDetails"]["stackAllocation"] = false;
	parsedInput["settings"]["optimizer"]["details"]["yulDetails"]["optimizerSteps"] = optimiserSteps;

	result = compiler.compile(parsedInput);
	BOOST_REQUIRE(result["errors"].isArray());
	BOOST_CHECK(result["errors"][0]["severity"] == "error");
	BOOST_REQUIRE(result["errors"][0]["message"].isString());
	BOOST_CHECK(result["errors"][0]["message"].asString().find("Stack too deep when compiling inline assembly") != std::string::npos);
	BOOST_CHECK(result["errors"][0]["type"] == "CompilerError");
}

BOOST_AUTO_TEST_CASE(standard_output_selection_wildcard)
{
	char const* input = R"(
	{
		"language": "Solidity",
			"sources":
		{
			"A":
			{
				"content": "pragma solidity >=0.0; contract C { function f() public pure {} }"
			}
		},
		"settings":
		{
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";

	Json::Value parsedInput;
	BOOST_REQUIRE(util::jsonParseStrict(input, parsedInput));

	solidity::frontend::StandardCompiler compiler;
	Json::Value result = compiler.compile(parsedInput);

	BOOST_REQUIRE(result["contracts"].isObject());
	BOOST_REQUIRE(result["contracts"].size() == 1);
	BOOST_REQUIRE(result["contracts"]["A"].isObject());
	BOOST_REQUIRE(result["contracts"]["A"].size() == 1);
	BOOST_REQUIRE(result["contracts"]["A"]["C"].isObject());
	BOOST_REQUIRE(result["contracts"]["A"]["C"]["evm"].isObject());
	BOOST_REQUIRE(result["contracts"]["A"]["C"]["evm"]["bytecode"].isObject());
	BOOST_REQUIRE(result["sources"].isObject());
	BOOST_REQUIRE(result["sources"].size() == 1);
	BOOST_REQUIRE(result["sources"]["A"].isObject());

}

BOOST_AUTO_TEST_CASE(standard_output_selection_wildcard_colon_source)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{
			":A":
			{
				"content": "pragma solidity >=0.0; contract C { function f() public pure {} }"
			}
		},
		"settings":
		{
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";

	Json::Value parsedInput;
	BOOST_REQUIRE(util::jsonParseStrict(input, parsedInput));

	solidity::frontend::StandardCompiler compiler;
	Json::Value result = compiler.compile(parsedInput);

	BOOST_REQUIRE(result["contracts"].isObject());
	BOOST_REQUIRE(result["contracts"].size() == 1);
	BOOST_REQUIRE(result["contracts"][":A"].isObject());
	BOOST_REQUIRE(result["contracts"][":A"].size() == 1);
	BOOST_REQUIRE(result["contracts"][":A"]["C"].isObject());
	BOOST_REQUIRE(result["contracts"][":A"]["C"]["evm"].isObject());
	BOOST_REQUIRE(result["contracts"][":A"]["C"]["evm"]["bytecode"].isObject());
	BOOST_REQUIRE(result["sources"].isObject());
	BOOST_REQUIRE(result["sources"].size() == 1);
	BOOST_REQUIRE(result["sources"][":A"].isObject());
}

BOOST_AUTO_TEST_CASE(standard_output_selection_wildcard_empty_source)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{
			"":
			{
				"content": "pragma solidity >=0.0; contract C { function f() public pure {} }"
			}
		},
		"settings":
		{
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";

	Json::Value parsedInput;
	BOOST_REQUIRE(util::jsonParseStrict(input, parsedInput));

	solidity::frontend::StandardCompiler compiler;
	Json::Value result = compiler.compile(parsedInput);

	BOOST_REQUIRE(result["contracts"].isObject());
	BOOST_REQUIRE(result["contracts"].size() == 1);
	BOOST_REQUIRE(result["contracts"][""].isObject());
	BOOST_REQUIRE(result["contracts"][""].size() == 1);
	BOOST_REQUIRE(result["contracts"][""]["C"].isObject());
	BOOST_REQUIRE(result["contracts"][""]["C"]["evm"].isObject());
	BOOST_REQUIRE(result["contracts"][""]["C"]["evm"]["bytecode"].isObject());
	BOOST_REQUIRE(result["sources"].isObject());
	BOOST_REQUIRE(result["sources"].size() == 1);
	BOOST_REQUIRE(result["sources"][""].isObject());
}

BOOST_AUTO_TEST_CASE(standard_output_selection_wildcard_multiple_sources)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{
			"A":
			{
				"content": "pragma solidity >=0.0; contract C { function f() public pure {} }"
			},
			"B":
			{
				"content": "pragma solidity >=0.0; contract D { function f() public pure {} }"
			}
		},
		"settings":
		{
			"outputSelection":
			{
				"*": { "D": ["evm.bytecode"] }
			}
		}
	}
	)";

	Json::Value parsedInput;
	BOOST_REQUIRE(util::jsonParseStrict(input, parsedInput));

	solidity::frontend::StandardCompiler compiler;
	Json::Value result = compiler.compile(parsedInput);

	BOOST_REQUIRE(result["contracts"].isObject());
	BOOST_REQUIRE(result["contracts"].size() == 1);
	BOOST_REQUIRE(result["contracts"]["B"].isObject());
	BOOST_REQUIRE(result["contracts"]["B"].size() == 1);
	BOOST_REQUIRE(result["contracts"]["B"]["D"].isObject());
	BOOST_REQUIRE(result["contracts"]["B"]["D"]["evm"].isObject());
	BOOST_REQUIRE(result["contracts"]["B"]["D"]["evm"]["bytecode"].isObject());
	BOOST_REQUIRE(result["sources"].isObject());
	BOOST_REQUIRE(result["sources"].size() == 2);
	BOOST_REQUIRE(result["sources"]["A"].isObject());
	BOOST_REQUIRE(result["sources"]["B"].isObject());
}

BOOST_AUTO_TEST_CASE(stopAfter_invalid_value)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{ "": { "content": "pragma solidity >=0.0; contract C { function f() public pure {} }" } },
		"settings":
		{
			"stopAfter": "rrr",
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Invalid value for \"settings.stopAfter\". Only valid value is \"parsing\"."));
}

BOOST_AUTO_TEST_CASE(stopAfter_invalid_type)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{ "": { "content": "pragma solidity >=0.0; contract C { function f() public pure {} }" } },
		"settings":
		{
			"stopAfter": 3,
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "\"settings.stopAfter\" must be a string."));
}

BOOST_AUTO_TEST_CASE(stopAfter_bin_conflict)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources":
		{ "": { "content": "pragma solidity >=0.0; contract C { function f() public pure {} }" } },
		"settings":
		{
			"stopAfter": "parsing",
			"outputSelection":
			{
				"*": { "C": ["evm.bytecode"] }
			}
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(containsError(result, "JSONError", "Requested output selection conflicts with \"settings.stopAfter\"."));
}

BOOST_AUTO_TEST_CASE(stopAfter_ast_output)
{
	char const* input = R"(
	{
		"language": "Solidity",
		"sources": {
			"a.sol": {
				"content": "// SPDX-License-Identifier: GPL-3.0\nimport \"tes32.sol\";\n contract C is X { constructor() {} }"
			}
		},
		"settings": {
			"stopAfter": "parsing",
			"outputSelection": { "*": { "": [ "ast" ] } }
		}
	}
	)";
	Json::Value result = compile(input);
	BOOST_CHECK(result["sources"].isObject());
	BOOST_CHECK(result["sources"]["a.sol"].isObject());
	BOOST_CHECK(result["sources"]["a.sol"]["ast"].isObject());
}

BOOST_AUTO_TEST_SUITE_END()

} // end namespaces