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Copy pathSolidityNameAndTypeResolution.cpp
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SolidityNameAndTypeResolution.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 Christian <[email protected]>
* @date 2014
* Unit tests for the name and type resolution of the solidity parser.
*/
#include <test/libsolidity/AnalysisFramework.h>
#include <libsolidity/ast/AST.h>
#include <libdevcore/SHA3.h>
#include <boost/test/unit_test.hpp>
#include <string>
using namespace std;
namespace dev
{
namespace solidity
{
namespace test
{
BOOST_FIXTURE_TEST_SUITE(SolidityNameAndTypeResolution, AnalysisFramework)
BOOST_AUTO_TEST_CASE(smoke_test)
{
char const* text = R"(
contract test {
uint256 stateVariable1;
function fun(uint256 arg1) public { uint256 y; y = arg1; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(double_stateVariable_declaration)
{
char const* text = R"(
contract test {
uint256 variable;
uint128 variable;
}
)";
CHECK_ERROR(text, DeclarationError, "Identifier already declared.");
}
BOOST_AUTO_TEST_CASE(double_function_declaration)
{
char const* text = R"(
contract test {
function fun() public { }
function fun() public { }
}
)";
CHECK_ERROR(text, DeclarationError, "Function with same name and arguments defined twice.");
}
BOOST_AUTO_TEST_CASE(double_variable_declaration)
{
char const* text = R"(
contract test {
function f() public {
uint256 x;
if (true) { uint256 x; }
}
}
)";
CHECK_ERROR(text, DeclarationError, "Identifier already declared.");
}
BOOST_AUTO_TEST_CASE(name_shadowing)
{
char const* text = R"(
contract test {
uint256 variable;
function f() public { uint32 variable; variable = 2; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(name_references)
{
char const* text = R"(
contract test {
uint256 variable;
function f(uint256) public returns (uint out) { f(variable); test; out; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(undeclared_name)
{
char const* text = R"(
contract test {
uint256 variable;
function f(uint256 arg) public {
f(notfound);
}
}
)";
CHECK_ERROR(text, DeclarationError, "Undeclared identifier.");
}
BOOST_AUTO_TEST_CASE(reference_to_later_declaration)
{
char const* text = R"(
contract test {
function g() public { f(); }
function f() public {}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(struct_definition_directly_recursive)
{
char const* text = R"(
contract test {
struct MyStructName {
address addr;
MyStructName x;
}
}
)";
CHECK_ERROR(text, TypeError, "Recursive struct definition.");
}
BOOST_AUTO_TEST_CASE(struct_definition_indirectly_recursive)
{
char const* text = R"(
contract test {
struct MyStructName1 {
address addr;
uint256 count;
MyStructName2 x;
}
struct MyStructName2 {
MyStructName1 x;
}
}
)";
CHECK_ERROR(text, TypeError, "Recursive struct definition.");
}
BOOST_AUTO_TEST_CASE(struct_definition_not_really_recursive)
{
char const* text = R"(
contract test {
struct s1 { uint a; }
struct s2 { s1 x; s1 y; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(struct_definition_recursion_via_mapping)
{
char const* text = R"(
contract test {
struct MyStructName1 {
address addr;
uint256 count;
mapping(uint => MyStructName1) x;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(type_inference_smoke_test)
{
char const* text = R"(
contract test {
function f(uint256 arg1, uint32 arg2) public returns (bool ret) {
var x = arg1 + arg2 == 8; ret = x;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(type_checking_return)
{
char const* text = R"(
contract test {
function f() public returns (bool r) { return 1 >= 2; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(type_checking_return_wrong_number)
{
char const* text = R"(
contract test {
function f() public returns (bool r1, bool r2) { return 1 >= 2; }
}
)";
CHECK_ERROR(text, TypeError, "Different number of arguments in return statement than in returns declaration.");
}
BOOST_AUTO_TEST_CASE(type_checking_return_wrong_type)
{
char const* text = R"(
contract test {
function f() public returns (uint256 r) { return 1 >= 2; }
}
)";
CHECK_ERROR(text, TypeError, "Return argument type bool is not implicitly convertible to expected type (type of first return variable) uint256.");
}
BOOST_AUTO_TEST_CASE(type_checking_function_call)
{
char const* text = R"(
contract test {
function f() public returns (bool) { return g(12, true) == 3; }
function g(uint256, bool) public returns (uint256) { }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(type_conversion_for_comparison)
{
char const* text = R"(
contract test {
function f() public { uint32(2) == int64(2); }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(type_conversion_for_comparison_invalid)
{
char const* text = R"(
contract test {
function f() public { int32(2) == uint64(2); }
}
)";
CHECK_ERROR(text, TypeError, "Operator == not compatible with types int32 and uint64");
}
BOOST_AUTO_TEST_CASE(type_inference_explicit_conversion)
{
char const* text = R"(
contract test {
function f() public returns (int256 r) { var x = int256(uint32(2)); return x; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(large_string_literal)
{
char const* text = R"(
contract test {
function f() public { var x = "123456789012345678901234567890123"; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(balance)
{
char const* text = R"(
contract test {
function fun() public {
uint256 x = address(0).balance;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(balance_invalid)
{
char const* text = R"(
contract test {
function fun() public {
address(0).balance = 7;
}
}
)";
CHECK_ERROR(text, TypeError, "Expression has to be an lvalue.");
}
BOOST_AUTO_TEST_CASE(assignment_to_mapping)
{
char const* text = R"(
contract test {
struct str {
mapping(uint=>uint) map;
}
str data;
function fun() public {
var a = data.map;
data.map = a;
}
}
)";
CHECK_ERROR(text, TypeError, "Mappings cannot be assigned to.");
}
BOOST_AUTO_TEST_CASE(assignment_to_struct)
{
char const* text = R"(
contract test {
struct str {
mapping(uint=>uint) map;
}
str data;
function fun() public {
var a = data;
data = a;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(returns_in_constructor)
{
char const* text = R"(
contract test {
function test() public returns (uint a) { }
}
)";
CHECK_ERROR(text, TypeError, "Non-empty \"returns\" directive for constructor.");
}
BOOST_AUTO_TEST_CASE(forward_function_reference)
{
char const* text = R"(
contract First {
function fun() public returns (bool) {
return Second(1).fun(1, true, 3) > 0;
}
}
contract Second {
function fun(uint, bool, uint) public returns (uint) {
if (First(2).fun() == true) return 1;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(comparison_bitop_precedence)
{
char const* text = R"(
contract First {
function fun() public returns (bool ret) {
return 1 & 2 == 8 & 9 && 1 ^ 2 < 4 | 6;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(comparison_of_function_types)
{
char const* text = R"(
contract C {
function f() public returns (bool ret) {
return this.f < this.f;
}
}
)";
CHECK_ERROR(text, TypeError, "Operator < not compatible");
text = R"(
contract C {
function f() public returns (bool ret) {
return f < f;
}
}
)";
CHECK_ERROR(text, TypeError, "Operator < not compatible");
text = R"(
contract C {
function f() public returns (bool ret) {
return f == f;
}
function g() public returns (bool ret) {
return f != f;
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(comparison_of_mapping_types)
{
char const* text = R"(
contract C {
mapping(uint => uint) x;
function f() public returns (bool ret) {
var y = x;
return x == y;
}
}
)";
CHECK_ERROR(text, TypeError, "Operator == not compatible");
}
BOOST_AUTO_TEST_CASE(function_no_implementation)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract test {
function functionName(bytes32 input) public returns (bytes32 out);
}
)";
sourceUnit = parseAndAnalyse(text);
std::vector<ASTPointer<ASTNode>> nodes = sourceUnit->nodes();
ContractDefinition* contract = dynamic_cast<ContractDefinition*>(nodes[1].get());
BOOST_REQUIRE(contract);
BOOST_CHECK(!contract->annotation().unimplementedFunctions.empty());
BOOST_CHECK(!contract->definedFunctions()[0]->isImplemented());
}
BOOST_AUTO_TEST_CASE(abstract_contract)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract base { function foo(); }
contract derived is base { function foo() public {} }
)";
sourceUnit = parseAndAnalyse(text);
std::vector<ASTPointer<ASTNode>> nodes = sourceUnit->nodes();
ContractDefinition* base = dynamic_cast<ContractDefinition*>(nodes[1].get());
ContractDefinition* derived = dynamic_cast<ContractDefinition*>(nodes[2].get());
BOOST_REQUIRE(base);
BOOST_CHECK(!base->annotation().unimplementedFunctions.empty());
BOOST_CHECK(!base->definedFunctions()[0]->isImplemented());
BOOST_REQUIRE(derived);
BOOST_CHECK(derived->annotation().unimplementedFunctions.empty());
BOOST_CHECK(derived->definedFunctions()[0]->isImplemented());
}
BOOST_AUTO_TEST_CASE(abstract_contract_with_overload)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract base { function foo(bool); }
contract derived is base { function foo(uint) public {} }
)";
sourceUnit = parseAndAnalyse(text);
std::vector<ASTPointer<ASTNode>> nodes = sourceUnit->nodes();
ContractDefinition* base = dynamic_cast<ContractDefinition*>(nodes[1].get());
ContractDefinition* derived = dynamic_cast<ContractDefinition*>(nodes[2].get());
BOOST_REQUIRE(base);
BOOST_CHECK(!base->annotation().unimplementedFunctions.empty());
BOOST_REQUIRE(derived);
BOOST_CHECK(!derived->annotation().unimplementedFunctions.empty());
}
BOOST_AUTO_TEST_CASE(create_abstract_contract)
{
char const* text = R"(
contract base { function foo(); }
contract derived {
base b;
function foo() public { b = new base(); }
}
)";
CHECK_ERROR(text, TypeError, "Trying to create an instance of an abstract contract.");
}
BOOST_AUTO_TEST_CASE(redeclare_implemented_abstract_function_as_abstract)
{
char const* text = R"(
contract base { function foo(); }
contract derived is base { function foo() public {} }
contract wrong is derived { function foo(); }
)";
CHECK_ERROR(text, TypeError, "Redeclaring an already implemented function as abstract");
}
BOOST_AUTO_TEST_CASE(implement_abstract_via_constructor)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract base { function foo(); }
contract foo is base { function foo() public {} }
)";
sourceUnit = parseAndAnalyse(text);
std::vector<ASTPointer<ASTNode>> nodes = sourceUnit->nodes();
BOOST_CHECK_EQUAL(nodes.size(), 3);
ContractDefinition* derived = dynamic_cast<ContractDefinition*>(nodes[2].get());
BOOST_REQUIRE(derived);
BOOST_CHECK(!derived->annotation().unimplementedFunctions.empty());
}
BOOST_AUTO_TEST_CASE(function_canonical_signature)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract Test {
function foo(uint256 arg1, uint64 arg2, bool arg3) public returns (uint256 ret) {
ret = arg1 + arg2;
}
}
)";
sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
BOOST_CHECK_EQUAL("foo(uint256,uint64,bool)", functions[0]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(function_canonical_signature_type_aliases)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract Test {
function boo(uint, bytes32, address) public returns (uint ret) {
ret = 5;
}
}
)";
sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
if (functions.empty())
continue;
BOOST_CHECK_EQUAL("boo(uint256,bytes32,address)", functions[0]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(function_external_types)
{
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract C {
uint a;
}
contract Test {
function boo(uint, bool, bytes8, bool[2], uint[], C, address[]) external returns (uint ret) {
ret = 5;
}
}
)";
sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
if (functions.empty())
continue;
BOOST_CHECK_EQUAL("boo(uint256,bool,bytes8,bool[2],uint256[],address,address[])", functions[0]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(enum_external_type)
{
// bug #1801
SourceUnit const* sourceUnit = nullptr;
char const* text = R"(
contract Test {
enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
function boo(ActionChoices enumArg) external returns (uint ret) {
ret = 5;
}
}
)";
sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
if (functions.empty())
continue;
BOOST_CHECK_EQUAL("boo(uint8)", functions[0]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(external_structs)
{
char const* text = R"(
contract Test {
enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
struct Empty {}
struct Nested { X[2][] a; uint y; }
struct X { bytes32 x; Test t; Empty[] e; }
function f(ActionChoices, uint, Empty) external {}
function g(Test, Nested) external {}
function h(function(Nested) external returns (uint)[]) external {}
function i(Nested[]) external {}
}
)";
SourceUnit const* sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
BOOST_REQUIRE(!functions.empty());
BOOST_CHECK_EQUAL("f(uint8,uint256,())", functions[0]->externalSignature());
BOOST_CHECK_EQUAL("g(address,((bytes32,address,()[])[2][],uint256))", functions[1]->externalSignature());
BOOST_CHECK_EQUAL("h(function[])", functions[2]->externalSignature());
BOOST_CHECK_EQUAL("i(((bytes32,address,()[])[2][],uint256)[])", functions[3]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(external_structs_in_libraries)
{
char const* text = R"(
library Test {
enum ActionChoices { GoLeft, GoRight, GoStraight, Sit }
struct Empty {}
struct Nested { X[2][] a; uint y; }
struct X { bytes32 x; Test t; Empty[] e; }
function f(ActionChoices, uint, Empty) external {}
function g(Test, Nested) external {}
function h(function(Nested) external returns (uint)[]) external {}
function i(Nested[]) external {}
}
)";
SourceUnit const* sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
BOOST_REQUIRE(!functions.empty());
BOOST_CHECK_EQUAL("f(Test.ActionChoices,uint256,Test.Empty)", functions[0]->externalSignature());
BOOST_CHECK_EQUAL("g(Test,Test.Nested)", functions[1]->externalSignature());
BOOST_CHECK_EQUAL("h(function[])", functions[2]->externalSignature());
BOOST_CHECK_EQUAL("i(Test.Nested[])", functions[3]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(struct_with_mapping_in_library)
{
char const* text = R"(
library Test {
struct Nested { mapping(uint => uint)[2][] a; uint y; }
struct X { Nested n; }
function f(X storage x) external {}
}
)";
SourceUnit const* sourceUnit = parseAndAnalyse(text);
for (ASTPointer<ASTNode> const& node: sourceUnit->nodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
auto functions = contract->definedFunctions();
BOOST_REQUIRE(!functions.empty());
BOOST_CHECK_EQUAL("f(Test.X storage)", functions[0]->externalSignature());
}
}
BOOST_AUTO_TEST_CASE(functions_with_identical_structs_in_interface)
{
char const* text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct S1 { }
struct S2 { }
function f(S1) pure {}
function f(S2) pure {}
}
)";
CHECK_ERROR(text, TypeError, "Function overload clash during conversion to external types for arguments");
}
BOOST_AUTO_TEST_CASE(functions_with_different_structs_in_interface)
{
char const* text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct S1 { function() external a; }
struct S2 { bytes24 a; }
function f(S1) pure {}
function f(S2) pure {}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(functions_with_stucts_of_non_external_types_in_interface)
{
char const* text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct S { function() internal a; }
function f(S) {}
}
)";
CHECK_ERROR(text, TypeError, "Internal or recursive type is not allowed for public or external functions.");
}
BOOST_AUTO_TEST_CASE(functions_with_stucts_of_non_external_types_in_interface_2)
{
char const* text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct S { mapping(uint => uint) a; }
function f(S) {}
}
)";
CHECK_ERROR(text, TypeError, "Internal or recursive type is not allowed for public or external functions.");
}
BOOST_AUTO_TEST_CASE(functions_with_stucts_of_non_external_types_in_interface_nested)
{
char const* text = R"(
pragma experimental ABIEncoderV2;
contract C {
struct T { mapping(uint => uint) a; }
struct S { T[][2] b; }
function f(S) {}
}
)";
CHECK_ERROR(text, TypeError, "Internal or recursive type is not allowed for public or external functions.");
}
BOOST_AUTO_TEST_CASE(function_external_call_allowed_conversion)
{
char const* text = R"(
contract C {}
contract Test {
function externalCall() public {
C arg;
this.g(arg);
}
function g (C c) external {}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(function_external_call_not_allowed_conversion)
{
char const* text = R"(
contract C {}
contract Test {
function externalCall() public {
address arg;
this.g(arg);
}
function g (C c) external {}
}
)";
CHECK_ERROR(text, TypeError, "Invalid type for argument in function call. Invalid implicit conversion from address to contract C requested.");
}
BOOST_AUTO_TEST_CASE(function_internal_allowed_conversion)
{
char const* text = R"(
contract C {
uint a;
}
contract Test {
C a;
function g (C c) public {}
function internalCall() public {
g(a);
}
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(function_internal_not_allowed_conversion)
{
char const* text = R"(
contract C {
uint a;
}
contract Test {
address a;
function g (C c) public {}
function internalCall() public {
g(a);
}
}
)";
CHECK_ERROR(text, TypeError, "Invalid type for argument in function call. Invalid implicit conversion from address to contract C requested.");
}
BOOST_AUTO_TEST_CASE(hash_collision_in_interface)
{
char const* text = R"(
contract test {
function gsf() public { }
function tgeo() public { }
}
)";
CHECK_ERROR(text, TypeError, "Function signature hash collision for tgeo()");
}
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() public { baseMember = 7; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(inheritance_diamond_basic)
{
char const* text = R"(
contract root { function rootFunction() public {} }
contract inter1 is root { function f() public {} }
contract inter2 is root { function f() public {} }
contract derived is root, inter2, inter1 {
function g() public { f(); rootFunction(); }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(cyclic_inheritance)
{
char const* text = R"(
contract A is B { }
contract B is A { }
)";
CHECK_ERROR_ALLOW_MULTI(text, TypeError, "Definition of base has to precede definition of derived contract");
}
BOOST_AUTO_TEST_CASE(legal_override_direct)
{
char const* text = R"(
contract B { function f() public {} }
contract C is B { function f(uint i) public {} }
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(legal_override_indirect)
{
char const* text = R"(
contract A { function f(uint a) public {} }
contract B { function f() public {} }
contract C is A, B { }
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(illegal_override_visibility)
{
char const* text = R"(
contract B { function f() internal {} }
contract C is B { function f() public {} }
)";
CHECK_ERROR(text, TypeError, "Overriding function visibility differs");
}
BOOST_AUTO_TEST_CASE(illegal_override_remove_constness)
{
char const* text = R"(
contract B { function f() constant {} }
contract C is B { function f() public {} }
)";
CHECK_ERROR(text, TypeError, "Overriding function changes state mutability from \"view\" to \"nonpayable\".");
}
BOOST_AUTO_TEST_CASE(illegal_override_add_constness)
{
char const* text = R"(
contract B { function f() public {} }
contract C is B { function f() constant {} }
)";
CHECK_ERROR(text, TypeError, "Overriding function changes state mutability from \"nonpayable\" to \"view\".");
}
BOOST_AUTO_TEST_CASE(complex_inheritance)
{
char const* text = R"(
contract A { function f() public { uint8 x = C(0).g(); } }
contract B { function f() public {} function g() public returns (uint8) {} }
contract C is A, B { }
)";
CHECK_SUCCESS(text);
}
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() public { } }
contract B is A { function f() public { A x = A(0); } }
)";
CHECK_SUCCESS(text);
}
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() public { } }
contract B is A { function A() public returns (uint8 r) {} }
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(missing_base_constructor_arguments)
{
char const* text = R"(
contract A { function A(uint a) public { } }
contract B is A { }
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(base_constructor_arguments_override)
{
char const* text = R"(
contract A { function A(uint a) public { } }
contract B is A { }
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(implicit_derived_to_base_conversion)
{
char const* text = R"(
contract A { }
contract B is A {
function f() public { A a = B(1); }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(implicit_base_to_derived_conversion)
{
char const* text = R"(
contract A { }
contract B is A {
function f() public { B b = A(1); }
}
)";
CHECK_ERROR(text, TypeError, "Type contract A is not implicitly convertible to expected type contract B.");
}
BOOST_AUTO_TEST_CASE(super_excludes_current_contract)
{
char const* text = R"(
contract A {
function b() public {}
}
contract B is A {
function f() public {
super.f();
}
}
)";
CHECK_ERROR(text, TypeError, "Member \"f\" not found or not visible after argument-dependent lookup in contract super B");
}
BOOST_AUTO_TEST_CASE(function_modifier_invocation)
{
char const* text = R"(
contract B {
function f() mod1(2, true) mod2("0123456") public { }
modifier mod1(uint a, bool b) { if (b) _; }
modifier mod2(bytes7 a) { while (a == "1234567") _; }
}
)";
CHECK_SUCCESS(text);
}
BOOST_AUTO_TEST_CASE(invalid_function_modifier_type)
{