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path: root/test/libsolidity/SolidityABIJSON.cpp
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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/>.
 */
/**
 * @author Marek Kotewicz <marek@ethdev.com>
 * @date 2014
 * Unit tests for the solidity compiler JSON Interface output.
 */

#include <test/Options.h>
#include <libsolidity/interface/CompilerStack.h>

#include <libdevcore/Exceptions.h>
#include <libdevcore/SwarmHash.h>

#include <libdevcore/JSON.h>

namespace dev
{
namespace solidity
{
namespace test
{

class JSONInterfaceChecker
{
public:
    JSONInterfaceChecker(): m_compilerStack() {}

    void checkInterface(std::string const& _code, std::string const& _expectedInterfaceString)
    {
        m_compilerStack.reset(false);
        m_compilerStack.addSource("", "pragma solidity >=0.0;\n" + _code);
        m_compilerStack.setEVMVersion(dev::test::Options::get().evmVersion());
        m_compilerStack.setOptimiserSettings(dev::test::Options::get().optimize);
        BOOST_REQUIRE_MESSAGE(m_compilerStack.parseAndAnalyze(), "Parsing contract failed");

        Json::Value generatedInterface = m_compilerStack.contractABI(m_compilerStack.lastContractName());
        Json::Value expectedInterface;
        BOOST_REQUIRE(jsonParseStrict(_expectedInterfaceString, expectedInterface));
        BOOST_CHECK_MESSAGE(
            expectedInterface == generatedInterface,
            "Expected:\n" << expectedInterface.toStyledString() <<
            "\n but got:\n" << generatedInterface.toStyledString()
        );
    }

protected:
    CompilerStack m_compilerStack;
};

BOOST_FIXTURE_TEST_SUITE(SolidityABIJSON, JSONInterfaceChecker)

BOOST_AUTO_TEST_CASE(basic_test)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint a) returns(uint d) { return a * 7; }
        }
    )";

    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(empty_contract)
{
    char const* sourceCode = R"(
        contract test { }
    )";
    char const* interface = "[]";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(multiple_methods)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint a) returns(uint d) { return a * 7; }
            function g(uint b) returns(uint e) { return b * 8; }
        }
    )";

    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "g",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "e",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(multiple_params)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint a, uint b) returns(uint d) { return a + b; }
        }
    )";

    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        },
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(multiple_methods_order)
{
    // methods are expected to be in alpabetical order
    char const* sourceCode = R"(
        contract test {
            function f(uint a) returns(uint d) { return a * 7; }
            function c(uint b) returns(uint e) { return b * 8; }
        }
    )";

    char const* interface = R"([
    {
        "name": "c",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "e",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(view_function)
{
    char const* sourceCode = R"(
        contract test {
            function foo(uint a, uint b) returns(uint d) { return a + b; }
            function boo(uint32 a) view returns(uint b) { return a * 4; }
        }
    )";

    char const* interface = R"([
    {
        "name": "foo",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        },
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "boo",
        "constant": true,
        "payable" : false,
        "stateMutability": "view",
        "type": "function",
        "inputs": [{
            "name": "a",
            "type": "uint32"
        }],
        "outputs": [
        {
            "name": "b",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

// constant is an alias to view above
BOOST_AUTO_TEST_CASE(constant_function)
{
    char const* sourceCode = R"(
        contract test {
            function foo(uint a, uint b) returns(uint d) { return a + b; }
            function boo(uint32 a) constant returns(uint b) { return a * 4; }
        }
    )";

    char const* interface = R"([
    {
        "name": "foo",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        },
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "boo",
        "constant": true,
        "payable" : false,
        "stateMutability": "view",
        "type": "function",
        "inputs": [{
            "name": "a",
            "type": "uint32"
        }],
        "outputs": [
        {
            "name": "b",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(pure_function)
{
    char const* sourceCode = R"(
        contract test {
            function foo(uint a, uint b) returns(uint d) { return a + b; }
            function boo(uint32 a) pure returns(uint b) { return a * 4; }
        }
    )";

    char const* interface = R"([
    {
        "name": "foo",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        },
        {
            "name": "b",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "boo",
        "constant": true,
        "payable" : false,
        "stateMutability": "pure",
        "type": "function",
        "inputs": [{
            "name": "a",
            "type": "uint32"
        }],
        "outputs": [
        {
            "name": "b",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(events)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint a) returns(uint d) { return a * 7; }
            event e1(uint b, address indexed c);
            event e2();
            event e2(uint a);
            event e3() anonymous;
        }
    )";
    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "a",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "d",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "e1",
        "type": "event",
        "anonymous": false,
        "inputs": [
        {
            "indexed": false,
            "name": "b",
            "type": "uint256"
        },
        {
            "indexed": true,
            "name": "c",
            "type": "address"
        }
        ]
    },
    {
        "name": "e2",
        "type": "event",
        "anonymous": false,
        "inputs": []
    },
    {
        "name": "e2",
        "type": "event",
        "anonymous": false,
        "inputs": [
        {
            "indexed": false,
            "name": "a",
            "type": "uint256"
        }
        ]
    },
    {
        "name": "e3",
        "type": "event",
        "anonymous": true,
        "inputs": []
    }

    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(events_anonymous)
{
    char const* sourceCode = R"(
        contract test {
            event e() anonymous;
        }
    )";
    char const* interface = R"([
    {
        "name": "e",
        "type": "event",
        "anonymous": true,
        "inputs": []
    }

    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(inherited)
{
    char const* sourceCode = R"(
        contract Base {
            function baseFunction(uint p) returns (uint i) { return p; }
            event baseEvent(bytes32 indexed evtArgBase);
        }
        contract Derived is Base {
            function derivedFunction(bytes32 p) returns (bytes32 i) { return p; }
            event derivedEvent(uint indexed evtArgDerived);
        }
    )";

    char const* interface = R"([
    {
        "name": "baseFunction",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs":
        [{
            "name": "p",
            "type": "uint256"
        }],
        "outputs":
        [{
            "name": "i",
            "type": "uint256"
        }]
    },
    {
        "name": "derivedFunction",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs":
        [{
            "name": "p",
            "type": "bytes32"
        }],
        "outputs":
        [{
            "name": "i",
            "type": "bytes32"
        }]
    },
    {
        "name": "derivedEvent",
        "type": "event",
        "anonymous": false,
        "inputs":
        [{
            "indexed": true,
            "name": "evtArgDerived",
            "type": "uint256"
        }]
    },
    {
        "name": "baseEvent",
        "type": "event",
        "anonymous": false,
        "inputs":
        [{
            "indexed": true,
            "name": "evtArgBase",
            "type": "bytes32"
        }]
    }])";


    checkInterface(sourceCode, interface);
}
BOOST_AUTO_TEST_CASE(empty_name_input_parameter_with_named_one)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint, uint k) returns(uint ret_k, uint ret_g) {
                uint g = 8;
                ret_k = k;
                ret_g = g;
            }
        }
    )";

    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "",
            "type": "uint256"
        },
        {
            "name": "k",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "ret_k",
            "type": "uint256"
        },
        {
            "name": "ret_g",
            "type": "uint256"
        }
        ]
    }
    ])";

    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(empty_name_return_parameter)
{
    char const* sourceCode = R"(
        contract test {
            function f(uint k) returns(uint) {
                return k;
            }
        }
    )";

    char const* interface = R"([
    {
        "name": "f",
        "constant": false,
        "payable" : false,
        "stateMutability": "nonpayable",
        "type": "function",
        "inputs": [
        {
            "name": "k",
            "type": "uint256"
        }
        ],
        "outputs": [
        {
            "name": "",
            "type": "uint256"
        }
        ]
    }
    ])";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(constructor_abi)
{
    char const* sourceCode = R"(
        contract test {
            function test(uint param1, test param2, bool param3) {}
        }
    )";

    char const* interface = R"([
    {
        "inputs": [
            {
                "name": "param1",
                "type": "uint256"
            },
            {
                "name": "param2",
                "type": "address"
            },
            {
                "name": "param3",
                "type": "bool"
            }
        ],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "constructor"
    }
    ])";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(payable_constructor_abi)
{
    char const* sourceCode = R"(
        contract test {
            function test(uint param1, test param2, bool param3) payable {}
        }
    )";

    char const* interface = R"([
    {
        "inputs": [
            {
                "name": "param1",
                "type": "uint256"
            },
            {
                "name": "param2",
                "type": "address"
            },
            {
                "name": "param3",
                "type": "bool"
            }
        ],
        "payable": true,
        "stateMutability": "payable",
        "type": "constructor"
    }
    ])";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(return_param_in_abi)
{
    // bug #1801
    char const* sourceCode = R"(
        contract test {
            enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
            function test(ActionChoices param) {}
            function ret() returns(ActionChoices) {
                ActionChoices action = ActionChoices.GoLeft;
                return action;
            }
        }
    )";

    char const* interface = R"(
    [
        {
            "constant" : false,
            "payable" : false,
            "stateMutability": "nonpayable",
            "inputs" : [],
            "name" : "ret",
            "outputs" : [
                {
                    "name" : "",
                    "type" : "uint8"
                }
            ],
            "type" : "function"
        },
        {
            "inputs": [
                {
                    "name": "param",
                    "type": "uint8"
                }
            ],
            "payable": false,
            "stateMutability": "nonpayable",
            "type": "constructor"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(strings_and_arrays)
{
    // bug #1801
    char const* sourceCode = R"(
        contract test {
            function f(string a, bytes b, uint[] c) external {}
        }
    )";

    char const* interface = R"(
    [
        {
            "constant" : false,
            "payable" : false,
            "stateMutability": "nonpayable",
            "name": "f",
            "inputs": [
                { "name": "a", "type": "string" },
                { "name": "b", "type": "bytes" },
                { "name": "c", "type": "uint256[]" }
            ],
            "outputs": [],
            "type" : "function"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(library_function)
{
    char const* sourceCode = R"(
        library test {
            struct StructType { uint a; }
            function f(StructType storage b, uint[] storage c, test d) returns (uint[] e, StructType storage f) {}
        }
    )";

    char const* interface = R"(
    [
        {
            "constant" : false,
            "payable" : false,
            "stateMutability": "nonpayable",
            "name": "f",
            "inputs": [
                { "name": "b", "type": "test.StructType storage" },
                { "name": "c", "type": "uint256[] storage" },
                { "name": "d", "type": "test" }
            ],
            "outputs": [
                { "name": "e", "type": "uint256[]" },
                { "name": "f", "type": "test.StructType storage" }
            ],
            "type" : "function"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(include_fallback_function)
{
    char const* sourceCode = R"(
        contract test {
            function() {}
        }
    )";

    char const* interface = R"(
    [
        {
            "payable": false,
            "stateMutability": "nonpayable",
            "type" : "fallback"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(payable_function)
{
    char const* sourceCode = R"(
        contract test {
            function f() {}
            function g() payable {}
        }
    )";

    char const* interface = R"(
    [
        {
            "constant" : false,
            "payable": false,
            "stateMutability": "nonpayable",
            "inputs": [],
            "name": "f",
            "outputs": [],
            "type" : "function"
        },
        {
            "constant" : false,
            "payable": true,
            "stateMutability": "payable",
            "inputs": [],
            "name": "g",
            "outputs": [],
            "type" : "function"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(payable_fallback_function)
{
    char const* sourceCode = R"(
        contract test {
            function () payable {}
        }
    )";

    char const* interface = R"(
    [
        {
            "payable": true,
            "stateMutability": "payable",
            "type" : "fallback"
        }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(function_type)
{
    char const* sourceCode = R"(
        contract test {
            function g(function(uint) external returns (uint) x) {}
        }
    )";

    char const* interface = R"(
    [
    {
        "constant" : false,
        "payable": false,
        "stateMutability": "nonpayable",
        "inputs": [{
            "name": "x",
            "type": "function"
        }],
        "name": "g",
        "outputs": [],
        "type" : "function"
    }
    ]
    )";
    checkInterface(sourceCode, interface);
}

BOOST_AUTO_TEST_CASE(return_structs)
{
    char const* text = R"(
        pragma experimental ABIEncoderV2;
        contract C {
            struct S { uint a; T[] sub; }
            struct T { uint[2] x; }
            function f() returns (uint x, S s) {
            }
        }
    )";
    char const* interface = R"(
    [{
        "constant" : false,
        "inputs" : [],
        "name" : "f",
        "outputs" : [
            {
            "name" : "x",
            "type" : "uint256"
            },
            {
            "components" : [
                {
                    "name" : "a",
                    "type" : "uint256"
                },
                {
                    "components" : [
                        {
                        "name" : "x",
                        "type" : "uint256[2]"
                        }
                    ],
                    "name" : "sub",
                    "type" : "tuple[]"
                }
            ],
            "name" : "s",
            "type" : "tuple"
            }
        ],
        "payable" : false,
        "stateMutability" : "nonpayable",
        "type" : "function"
    }]
    )";
    checkInterface(text, interface);
}

BOOST_AUTO_TEST_CASE(return_structs_with_contracts)
{
    char const* text = R"(
        pragma experimental ABIEncoderV2;
        contract C {
            struct S { C[] x; C y; }
            function f() returns (S s, C c) {
            }
        }
    )";
    char const* interface = R"(
    [{
        "constant": false,
        "inputs": [],
        "name": "f",
        "outputs": [
            {
                "components": [
                    {
                        "name": "x",
                        "type": "address[]"
                    },
                    {
                        "name": "y",
                        "type": "address"
                    }
                ],
                "name": "s",
                "type": "tuple"
            },
            {
                "name": "c",
                "type": "address"
            }
        ],
        "payable": false,
        "stateMutability" : "nonpayable",
        "type": "function"
    }]
    )";
    checkInterface(text, interface);
}

BOOST_AUTO_TEST_CASE(event_structs)
{
    char const* text = R"(
        contract C {
            struct S { uint a; T[] sub; bytes b; }
            struct T { uint[2] x; }
            event E(T t, S s);
        }
    )";
    char const *interface = R"(
        [{
        "anonymous": false,
        "inputs": [
            {
                "components": [
                    {
                        "name": "x",
                        "type": "uint256[2]"
                    }
                ],
                "indexed": false,
                "name": "t",
                "type": "tuple"
            },
            {
                "components": [
                    {
                        "name": "a",
                        "type": "uint256"
                    },
                    {
                        "components": [
                            {
                                "name": "x",
                                "type": "uint256[2]"
                            }
                        ],
                        "name": "sub",
                        "type": "tuple[]"
                    },
                    {
                        "name": "b",
                        "type": "bytes"
                    }
                ],
                "indexed": false,
                "name": "s",
                "type": "tuple"
            }
        ],
        "name": "E",
        "type": "event"
    }]
    )";
    checkInterface(text, interface);
}

BOOST_AUTO_TEST_CASE(structs_in_libraries)
{
    char const* text = R"(
        pragma experimental ABIEncoderV2;
        library L {
            struct S { uint a; T[] sub; bytes b; }
            struct T { uint[2] x; }
            function f(L.S storage s) {}
            function g(L.S s) {}
        }
    )";
    char const* interface = R"(
    [{
        "constant": false,
        "inputs": [
            {
                "components": [
                    {
                        "name": "a",
                        "type": "uint256"
                    },
                    {
                        "components": [
                            {
                                "name": "x",
                                "type": "uint256[2]"
                            }
                        ],
                        "name": "sub",
                        "type": "tuple[]"
                    },
                    {
                        "name": "b",
                        "type": "bytes"
                    }
                ],
                "name": "s",
                "type": "tuple"
            }
        ],
        "name": "g",
        "outputs": [],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "constant": false,
        "inputs": [
            {
                "name": "s",
                "type": "L.S storage"
            }
        ],
        "name": "f",
        "outputs": [],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "function"
    }]
    )";
    checkInterface(text, interface);
}

BOOST_AUTO_TEST_SUITE_END()

}
}
}