path: root/SolidityNameAndTypeResolution.cpp

/*
    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/>.
*/
/**
 * @author Christian <c@ethdev.com>
 * @date 2014
 * Unit tests for the name and type resolution of the solidity parser.
 */

#include <string>

#include <libdevcore/Log.h>
#include <libdevcrypto/SHA3.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/Exceptions.h>
#include "TestHelper.h"

using namespace std;

namespace dev
{
namespace solidity
{
namespace test
{

namespace
{

ASTPointer<SourceUnit> parseTextAndResolveNames(std::string const& _source)
{
    Parser parser;
    ASTPointer<SourceUnit> sourceUnit = parser.parse(std::make_shared<Scanner>(CharStream(_source)));
    NameAndTypeResolver resolver({});
    resolver.registerDeclarations(*sourceUnit);
    for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
        if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
            resolver.resolveNamesAndTypes(*contract);
    for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
        if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
            resolver.checkTypeRequirements(*contract);

    return sourceUnit;
}

static ContractDefinition const* retrieveContract(ASTPointer<SourceUnit> _source, unsigned index)
{
    ContractDefinition* contract;
    unsigned counter = 0;
    for (ASTPointer<ASTNode> const& node: _source->getNodes())
        if ((contract = dynamic_cast<ContractDefinition*>(node.get())) && counter == index)
            return contract;

    return NULL;
}

static FunctionTypePointer const& retrieveFunctionBySignature(ContractDefinition const* _contract,
                                                              std::string const& _signature)
{
    FixedHash<4> hash(dev::sha3(_signature));
    return _contract->getInterfaceFunctions()[hash];
}
}

BOOST_AUTO_TEST_SUITE(SolidityNameAndTypeResolution)

BOOST_AUTO_TEST_CASE(smoke_test)
{
    char const* text = "contract test {\n"
                       "  uint256 stateVariable1;\n"
                       "  function fun(uint256 arg1) { var x; uint256 y; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(double_stateVariable_declaration)
{
    char const* text = "contract test {\n"
                       "  uint256 variable;\n"
                       "  uint128 variable;\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(double_function_declaration)
{
    char const* text = "contract test {\n"
                       "  function fun() { var x; }\n"
                       "  function fun() { var x; }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(double_variable_declaration)
{
    char const* text = "contract test {\n"
                       "  function f() { uint256 x; if (true)  { uint256 x; } }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(name_shadowing)
{
    char const* text = "contract test {\n"
                       "  uint256 variable;\n"
                       "  function f() { uint32 variable ; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(name_references)
{
    char const* text = "contract test {\n"
                       "  uint256 variable;\n"
                       "  function f(uint256 arg) returns (uint out) { f(variable); test; out; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(undeclared_name)
{
    char const* text = "contract test {\n"
                       "  uint256 variable;\n"
                       "  function f(uint256 arg) { f(notfound); }"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(reference_to_later_declaration)
{
    char const* text = "contract test {\n"
                       "  function g() { f(); }"
                       "  function f() {  }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(struct_definition_directly_recursive)
{
    char const* text = "contract test {\n"
                       "  struct MyStructName {\n"
                       "    address addr;\n"
                       "    MyStructName x;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), ParserError);
}

BOOST_AUTO_TEST_CASE(struct_definition_indirectly_recursive)
{
    char const* text = "contract test {\n"
                       "  struct MyStructName1 {\n"
                       "    address addr;\n"
                       "    uint256 count;\n"
                       "    MyStructName2 x;\n"
                       "  }\n"
                       "  struct MyStructName2 {\n"
                       "    MyStructName1 x;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), ParserError);
}

BOOST_AUTO_TEST_CASE(struct_definition_recursion_via_mapping)
{
    char const* text = "contract test {\n"
                       "  struct MyStructName1 {\n"
                       "    address addr;\n"
                       "    uint256 count;\n"
                       "    mapping(uint => MyStructName1) x;\n"
                       "  }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(type_inference_smoke_test)
{
    char const* text = "contract test {\n"
                       "  function f(uint256 arg1, uint32 arg2) returns (bool ret) { var x = arg1 + arg2 == 8; ret = x; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(type_checking_return)
{
    char const* text = "contract test {\n"
                       "  function f() returns (bool r) { return 1 >= 2; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(type_checking_return_wrong_number)
{
    char const* text = "contract test {\n"
                       "  function f() returns (bool r1, bool r2) { return 1 >= 2; }"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(type_checking_return_wrong_type)
{
    char const* text = "contract test {\n"
                       "  function f() returns (uint256 r) { return 1 >= 2; }"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(type_checking_function_call)
{
    char const* text = "contract test {\n"
                       "  function f() returns (bool r) { return g(12, true) == 3; }\n"
                       "  function g(uint256 a, bool b) returns (uint256 r) { }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(type_conversion_for_comparison)
{
    char const* text = "contract test {\n"
                       "  function f() { uint32(2) == int64(2); }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(type_conversion_for_comparison_invalid)
{
    char const* text = "contract test {\n"
                       "  function f() { int32(2) == uint64(2); }"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(type_inference_explicit_conversion)
{
    char const* text = "contract test {\n"
                       "  function f() returns (int256 r) { var x = int256(uint32(2)); return x; }"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(large_string_literal)
{
    char const* text = "contract test {\n"
                       "  function f() { var x = \"123456789012345678901234567890123\"; }"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(balance)
{
    char const* text = "contract test {\n"
                       "  function fun() {\n"
                       "    uint256 x = address(0).balance;\n"
                       "  }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(balance_invalid)
{
    char const* text = "contract test {\n"
                       "  function fun() {\n"
                       "    address(0).balance = 7;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(assignment_to_mapping)
{
    char const* text = "contract test {\n"
                       "  struct str {\n"
                       "    mapping(uint=>uint) map;\n"
                       "  }\n"
                       "  str data;"
                       "  function fun() {\n"
                       "    var a = data.map;\n"
                       "    data.map = a;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(assignment_to_struct)
{
    char const* text = "contract test {\n"
                       "  struct str {\n"
                       "    mapping(uint=>uint) map;\n"
                       "  }\n"
                       "  str data;"
                       "  function fun() {\n"
                       "    var a = data;\n"
                       "    data = a;\n"
                       "  }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(returns_in_constructor)
{
    char const* text = "contract test {\n"
                       "  function test() returns (uint a) {\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(forward_function_reference)
{
    char const* text = "contract First {\n"
                       "  function fun() returns (bool ret) {\n"
                       "    return Second(1).fun(1, true, 3) > 0;\n"
                       "  }\n"
                       "}\n"
                       "contract Second {\n"
                       "  function fun(uint a, bool b, uint c) returns (uint ret) {\n"
                       "    if (First(2).fun() == true) return 1;\n"
                       "  }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(comparison_bitop_precedence)
{
    char const* text = "contract First {\n"
                       "  function fun() returns (bool ret) {\n"
                       "    return 1 & 2 == 8 & 9 && 1 ^ 2 < 4 | 6;\n"
                       "  }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(function_canonical_signature)
{
    ASTPointer<SourceUnit> sourceUnit;
    char const* text = "contract Test {\n"
                       "  function foo(uint256 arg1, uint64 arg2, bool arg3) returns (uint256 ret) {\n"
                       "    ret = arg1 + arg2;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_NO_THROW(sourceUnit = parseTextAndResolveNames(text));
    for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
        if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
        {
            auto functions = contract->getDefinedFunctions();
            BOOST_CHECK_EQUAL("foo(uint256,uint64,bool)", functions[0]->getCanonicalSignature());
        }
}

BOOST_AUTO_TEST_CASE(function_canonical_signature_type_aliases)
{
    ASTPointer<SourceUnit> sourceUnit;
    char const* text = "contract Test {\n"
                       "  function boo(uint arg1, hash arg2, address arg3) returns (uint ret) {\n"
                       "    ret = 5;\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_NO_THROW(sourceUnit = parseTextAndResolveNames(text));
    for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
        if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
        {
            auto functions = contract->getDefinedFunctions();
            BOOST_CHECK_EQUAL("boo(uint256,hash256,address)", functions[0]->getCanonicalSignature());
        }
}

BOOST_AUTO_TEST_CASE(hash_collision_in_interface)
{
    char const* text = "contract test {\n"
                       "  function gsf() {\n"
                       "  }\n"
                       "  function tgeo() {\n"
                       "  }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(inheritance_basic)
{
    char const* text = R"(
        contract base { uint baseMember; struct BaseType { uint element; } }
        contract derived is base {
            BaseType data;
            function f() { baseMember = 7; }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(inheritance_diamond_basic)
{
    char const* text = R"(
        contract root { function rootFunction() {} }
        contract inter1 is root { function f() {} }
        contract inter2 is root { function f() {} }
        contract derived is root, inter2, inter1 {
            function g() { f(); rootFunction(); }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(cyclic_inheritance)
{
    char const* text = R"(
        contract A is B { }
        contract B is A { }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(illegal_override_direct)
{
    char const* text = R"(
        contract B { function f() {} }
        contract C is B { function f(uint i) {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(illegal_override_indirect)
{
    char const* text = R"(
        contract A { function f(uint a) {} }
        contract B { function f() {} }
        contract C is A, B { }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(illegal_override_visibility)
{
    char const* text = R"(
        contract B { function f() internal {} }
        contract C is B { function f() public {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(illegal_override_constness)
{
    char const* text = R"(
        contract B { function f() constant {} }
        contract C is B { function f() {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(complex_inheritance)
{
    char const* text = R"(
        contract A { function f() { uint8 x = C(0).g(); } }
        contract B { function f() {} function g() returns (uint8 r) {} }
        contract C is A, B { }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(constructor_visibility)
{
    // The constructor of a base class should not be visible in the derived class
    char const* text = R"(
        contract A { function A() { } }
        contract B is A { function f() { A x = A(0); } }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(overriding_constructor)
{
    // It is fine to "override" constructor of a base class since it is invisible
    char const* text = R"(
        contract A { function A() { } }
        contract B is A { function A() returns (uint8 r) {} }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(missing_base_constructor_arguments)
{
    char const* text = R"(
        contract A { function A(uint a) { } }
        contract B is A { }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(base_constructor_arguments_override)
{
    char const* text = R"(
        contract A { function A(uint a) { } }
        contract B is A { }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(implicit_derived_to_base_conversion)
{
    char const* text = R"(
        contract A { }
        contract B is A {
            function f() { A a = B(1); }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(implicit_base_to_derived_conversion)
{
    char const* text = R"(
        contract A { }
        contract B is A {
            function f() { B b = A(1); }
        }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(function_modifier_invocation)
{
    char const* text = R"(
        contract B {
            function f() mod1(2, true) mod2("0123456") { }
            modifier mod1(uint a, bool b) { if (b) _ }
            modifier mod2(string7 a) { while (a == "1234567") _ }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(invalid_function_modifier_type)
{
    char const* text = R"(
        contract B {
            function f() mod1(true) { }
            modifier mod1(uint a) { if (a > 0) _ }
        }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(function_modifier_invocation_parameters)
{
    char const* text = R"(
        contract B {
            function f(uint8 a) mod1(a, true) mod2(r) returns (string7 r) { }
            modifier mod1(uint a, bool b) { if (b) _ }
            modifier mod2(string7 a) { while (a == "1234567") _ }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(function_modifier_invocation_local_variables)
{
    char const* text = R"(
        contract B {
            function f() mod(x) { uint x = 7; }
            modifier mod(uint a) { if (a > 0) _ }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(legal_modifier_override)
{
    char const* text = R"(
        contract A { modifier mod(uint a) {} }
        contract B is A { modifier mod(uint a) {} }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(illegal_modifier_override)
{
    char const* text = R"(
        contract A { modifier mod(uint a) {} }
        contract B is A { modifier mod(uint8 a) {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(modifier_overrides_function)
{
    char const* text = R"(
        contract A { modifier mod(uint a) {} }
        contract B is A { function mod(uint a) {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(function_overrides_modifier)
{
    char const* text = R"(
        contract A { function mod(uint a) {} }
        contract B is A { modifier mod(uint a) {} }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(modifier_returns_value)
{
    char const* text = R"(
        contract A {
            function f(uint a) mod(2) returns (uint r) {}
            modifier mod(uint a) { return 7; }
        }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(state_variable_accessors)
{
    char const* text = "contract test {\n"
                       "  function fun() {\n"
                       "    uint64(2);\n"
                       "  }\n"
                       "uint256 public foo;\n"
                       "mapping(uint=>string4) public map;\n"
                       "mapping(uint=>mapping(uint=>string4)) public multiple_map;\n"
                       "}\n";

    ASTPointer<SourceUnit> source;
    ContractDefinition const* contract;
    ETH_TEST_CHECK_NO_THROW(source = parseTextAndResolveNames(text), "Parsing and Resolving names failed");
    BOOST_REQUIRE((contract = retrieveContract(source, 0)) != nullptr);
    FunctionTypePointer function = retrieveFunctionBySignature(contract, "foo()");
    BOOST_REQUIRE(function && function->hasDeclaration());
    auto returnParams = function->getReturnParameterTypeNames();
    BOOST_CHECK_EQUAL(returnParams.at(0), "uint256");
    BOOST_CHECK(function->isConstant());

    function = retrieveFunctionBySignature(contract, "map(uint256)");
    BOOST_REQUIRE(function && function->hasDeclaration());
    auto params = function->getParameterTypeNames();
    BOOST_CHECK_EQUAL(params.at(0), "uint256");
    returnParams = function->getReturnParameterTypeNames();
    BOOST_CHECK_EQUAL(returnParams.at(0), "string4");
    BOOST_CHECK(function->isConstant());

    function = retrieveFunctionBySignature(contract, "multiple_map(uint256,uint256)");
    BOOST_REQUIRE(function && function->hasDeclaration());
    params = function->getParameterTypeNames();
    BOOST_CHECK_EQUAL(params.at(0), "uint256");
    BOOST_CHECK_EQUAL(params.at(1), "uint256");
    returnParams = function->getReturnParameterTypeNames();
    BOOST_CHECK_EQUAL(returnParams.at(0), "string4");
    BOOST_CHECK(function->isConstant());
}

BOOST_AUTO_TEST_CASE(function_clash_with_state_variable_accessor)
{
    char const* text = "contract test {\n"
                       "  function fun() {\n"
                       "    uint64(2);\n"
                       "  }\n"
                       "uint256 foo;\n"
                       "   function foo() {}\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(private_state_variable)
{
    char const* text = "contract test {\n"
                       "  function fun() {\n"
                       "    uint64(2);\n"
                       "  }\n"
                       "uint256 private foo;\n"
                       "uint256 internal bar;\n"
                       "}\n";

    ASTPointer<SourceUnit> source;
    ContractDefinition const* contract;
    ETH_TEST_CHECK_NO_THROW(source = parseTextAndResolveNames(text), "Parsing and Resolving names failed");
    BOOST_CHECK((contract = retrieveContract(source, 0)) != nullptr);
    FunctionTypePointer function;
    function = retrieveFunctionBySignature(contract, "foo()");
    BOOST_CHECK_MESSAGE(function == nullptr, "Accessor function of a private variable should not exist");
    function = retrieveFunctionBySignature(contract, "bar()");
    BOOST_CHECK_MESSAGE(function == nullptr, "Accessor function of an internal variable should not exist");
}

BOOST_AUTO_TEST_CASE(base_class_state_variable_accessor)
{
    // test for issue #1126 https://github.com/ethereum/cpp-ethereum/issues/1126
    char const* text = "contract Parent {\n"
                       "    uint256 public m_aMember;\n"
                       "}\n"
                       "contract Child is Parent{\n"
                       "    function foo() returns (uint256) { return Parent.m_aMember; }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(base_class_state_variable_internal_member)
{
    char const* text = "contract Parent {\n"
                       "    uint256 internal m_aMember;\n"
                       "}\n"
                       "contract Child is Parent{\n"
                       "    function foo() returns (uint256) { return Parent.m_aMember; }\n"
                       "}\n";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(state_variable_member_of_wrong_class1)
{
    char const* text = "contract Parent1 {\n"
                       "    uint256 internal m_aMember1;\n"
                       "}\n"
                       "contract Parent2 is Parent1{\n"
                       "    uint256 internal m_aMember2;\n"
                       "}\n"
                       "contract Child is Parent2{\n"
                       "    function foo() returns (uint256) { return Parent2.m_aMember1; }\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(state_variable_member_of_wrong_class2)
{
    char const* text = "contract Parent1 {\n"
                       "    uint256 internal m_aMember1;\n"
                       "}\n"
                       "contract Parent2 is Parent1{\n"
                       "    uint256 internal m_aMember2;\n"
                       "}\n"
                       "contract Child is Parent2{\n"
                       "    function foo() returns (uint256) { return Child.m_aMember2; }\n"
                       "    uint256 public m_aMember3;\n"
                       "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(fallback_function)
{
    char const* text = R"(
        contract C {
            uint x;
            function() { x = 2; }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(fallback_function_with_arguments)
{
    char const* text = R"(
        contract C {
            uint x;
            function(uint a) { x = 2; }
        }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(fallback_function_twice)
{
    char const* text = R"(
        contract C {
            uint x;
            function() { x = 2; }
            function() { x = 3; }
        }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(fallback_function_inheritance)
{
    char const* text = R"(
        contract A {
            uint x;
            function() { x = 1; }
        }
        contract C is A {
            function() { x = 2; }
        }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(event)
{
    char const* text = R"(
        contract c {
            event e(uint indexed a, string3 indexed s, bool indexed b);
            function f() { e(2, "abc", true); }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(event_too_many_indexed)
{
    char const* text = R"(
        contract c {
            event e(uint indexed a, string3 indexed b, bool indexed c, uint indexed d);
            function f() { e(2, "abc", true); }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(event_call)
{
    char const* text = R"(
        contract c {
            event e(uint a, string3 indexed s, bool indexed b);
            function f() { e(2, "abc", true); }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(event_inheritance)
{
    char const* text = R"(
        contract base {
            event e(uint a, string3 indexed s, bool indexed b);
        }
        contract c is base {
            function f() { e(2, "abc", true); }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(multiple_events_argument_clash)
{
    char const* text = R"(
        contract c {
            event e1(uint a, uint e1, uint e2);
            event e2(uint a, uint e1, uint e2);
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(access_to_default_function_visibility)
{
    char const* text = R"(
        contract c {
            function f() {}
        }
        contract d {
            function g() { c(0).f(); }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(access_to_internal_function)
{
    char const* text = R"(
        contract c {
            function f() internal {}
        }
        contract d {
            function g() { c(0).f(); }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(access_to_default_state_variable_visibility)
{
    char const* text = R"(
        contract c {
            uint a;
        }
        contract d {
            function g() { c(0).a(); }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(access_to_internal_state_variable)
{
    char const* text = R"(
        contract c {
            uint public a;
        }
        contract d {
            function g() { c(0).a(); }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(error_count_in_named_args)
{
    char const* sourceCode = "contract test {\n"
                             "  function a(uint a, uint b) returns (uint r) { r = a + b; }\n"
                             "  function b() returns (uint r) { r = a({a: 1}); }\n"
                             "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(empty_in_named_args)
{
    char const* sourceCode = "contract test {\n"
                             "  function a(uint a, uint b) returns (uint r) { r = a + b; }\n"
                             "  function b() returns (uint r) { r = a({}); }\n"
                             "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(duplicate_parameter_names_in_named_args)
{
    char const* sourceCode = "contract test {\n"
                             "  function a(uint a, uint b) returns (uint r) { r = a + b; }\n"
                             "  function b() returns (uint r) { r = a({a: 1, a: 2}); }\n"
                             "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(invalid_parameter_names_in_named_args)
{
    char const* sourceCode = "contract test {\n"
                             "  function a(uint a, uint b) returns (uint r) { r = a + b; }\n"
                             "  function b() returns (uint r) { r = a({a: 1, c: 2}); }\n"
                             "}\n";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(empty_name_input_parameter)
{
    char const* text = R"(
        contract test {
            function f(uint){
        }
    })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(empty_name_return_parameter)
{
    char const* text = R"(
        contract test {
            function f() returns(bool){
        }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(empty_name_input_parameter_with_named_one)
{
    char const* text = R"(
        contract test {
            function f(uint, uint k) returns(uint ret_k){
                return k;
        }
    })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(empty_name_return_parameter_with_named_one)
{
    char const* text = R"(
        contract test {
            function f() returns(uint ret_k, uint){
                return 5;
        }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(disallow_declaration_of_void_type)
{
    char const* sourceCode = "contract c { function f() { var x = f(); } }";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(overflow_caused_by_ether_units)
{
    char const* sourceCodeFine = R"(
        contract c {
            function c ()
            {
                 a = 115792089237316195423570985008687907853269984665640564039458;
            }
            uint256 a;
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(sourceCodeFine),
        "Parsing and Resolving names failed");
    char const* sourceCode = R"(
        contract c {
            function c ()
            {
                 a = 115792089237316195423570985008687907853269984665640564039458 ether;
            }
            uint256 a;
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(exp_operator_negative_exponent)
{
    char const* sourceCode = R"(
        contract test {
            function f() returns(uint d) { return 2 ** -3; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(exp_operator_exponent_too_big)
{
    char const* sourceCode = R"(
        contract test {
            function f() returns(uint d) { return 2 ** 10000000000; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(enum_member_access)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
                function test()
                {
                    choices = ActionChoices.GoStraight;
                }
                ActionChoices choices;
            }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(enum_invalid_member_access)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
                function test()
                {
                    choices = ActionChoices.RunAroundWavingYourHands;
                }
                ActionChoices choices;
            }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(enum_explicit_conversion_is_okay)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
                function test()
                {
                    a = uint256(ActionChoices.GoStraight);
                    b = uint64(ActionChoices.Sit);
                }
                uint256 a;
                uint64 b;
            }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(int_to_enum_explicit_conversion_is_okay)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
                function test()
                {
                    a = 2;
                    b = ActionChoices(a);
                }
                uint256 a;
                ActionChoices b;
            }
    )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(enum_implicit_conversion_is_not_okay)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
                function test()
                {
                    a = ActionChoices.GoStraight;
                    b = ActionChoices.Sit;
                }
                uint256 a;
                uint64 b;
            }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(enum_duplicate_values)
{
    char const* text = R"(
            contract test {
                enum ActionChoices { GoLeft, GoRight, GoLeft, Sit }
            }
    )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), DeclarationError);
}

BOOST_AUTO_TEST_CASE(private_visibility)
{
    char const* sourceCode = R"(
        contract base {
            function f() private {}
        }
        contract derived is base {
            function g() { f(); }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), DeclarationError);
}

BOOST_AUTO_TEST_CASE(private_visibility_via_explicit_base_access)
{
    char const* sourceCode = R"(
        contract base {
            function f() private {}
        }
        contract derived is base {
            function g() { base.f(); }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(external_visibility)
{
    char const* sourceCode = R"(
        contract c {
            function f() external {}
            function g() { f(); }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), DeclarationError);
}

BOOST_AUTO_TEST_CASE(external_base_visibility)
{
    char const* sourceCode = R"(
        contract base {
            function f() external {}
        }
        contract derived is base {
            function g() { base.f(); }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(external_argument_assign)
{
    char const* sourceCode = R"(
        contract c {
            function f(uint a) external { a = 1; }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(external_argument_increment)
{
    char const* sourceCode = R"(
        contract c {
            function f(uint a) external { a++; }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(external_argument_delete)
{
    char const* sourceCode = R"(
        contract c {
            function f(uint a) external { delete a; }
        }
        )";
    BOOST_CHECK_THROW(parseTextAndResolveNames(sourceCode), TypeError);
}

BOOST_AUTO_TEST_CASE(test_for_bug_override_function_with_bytearray_type)
{
    char const* sourceCode = R"(
        contract Vehicle {
            function f(bytes _a) external returns (uint256 r) {r = 1;}
        }
        contract Bike is Vehicle {
            function f(bytes _a) external returns (uint256 r) {r = 42;}
        }
        )";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(sourceCode), "Parsing and Name Resolving failed");
}

BOOST_AUTO_TEST_CASE(array_with_nonconstant_length)
{
    char const* text = R"(
        contract c {
            function f(uint a) { uint8[a] x; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(array_copy_with_different_types1)
{
    char const* text = R"(
        contract c {
            bytes a;
            uint[] b;
            function f() { b = a; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(array_copy_with_different_types2)
{
    char const* text = R"(
        contract c {
            uint32[] a;
            uint8[] b;
            function f() { b = a; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(array_copy_with_different_types_conversion_possible)
{
    char const* text = R"(
        contract c {
            uint32[] a;
            uint8[] b;
            function f() { a = b; }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(array_copy_with_different_types_static_dynamic)
{
    char const* text = R"(
        contract c {
            uint32[] a;
            uint8[80] b;
            function f() { a = b; }
        })";
    ETH_TEST_CHECK_NO_THROW(parseTextAndResolveNames(text), "Parsing and Name Resolving Failed");
}

BOOST_AUTO_TEST_CASE(array_copy_with_different_types_dynamic_static)
{
    char const* text = R"(
        contract c {
            uint[] a;
            uint[80] b;
            function f() { b = a; }
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(storage_variable_initialization_with_incorrect_type_int)
{
    char const* text = R"(
        contract c {
            uint8 a = 1000;
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_CASE(storage_variable_initialization_with_incorrect_type_string)
{
    char const* text = R"(
        contract c {
            uint a = "abc";
        })";
    BOOST_CHECK_THROW(parseTextAndResolveNames(text), TypeError);
}

BOOST_AUTO_TEST_SUITE_END()

}
}
} // end namespaces