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authorchriseth <chris@ethereum.org>2017-09-14 00:29:13 +0800
committerGitHub <noreply@github.com>2017-09-14 00:29:13 +0800
commit3f3bcc4f8a0d12e9b92d6b63e7cfd92cbbfa775d (patch)
tree5a8f36e2b2491e07534d9c1570b8f40a2235c4c5 /test
parent72b7e001aa837ab59b3b14bfbabf69bbd102ded1 (diff)
parent172704a58fa2b7562107b8df299c5a81ba702d12 (diff)
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Merge pull request #2848 from ethereum/checkViewPure
Enforce view and pure.
Diffstat (limited to 'test')
-rw-r--r--test/libsolidity/SolidityEndToEndTest.cpp30
-rw-r--r--test/libsolidity/SolidityNameAndTypeResolution.cpp142
-rw-r--r--test/libsolidity/ViewPureChecker.cpp398
3 files changed, 484 insertions, 86 deletions
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index 73dd7d22..fa4d675c 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -6525,7 +6525,7 @@ BOOST_AUTO_TEST_CASE(state_variable_under_contract_name)
contract Scope {
uint stateVar = 42;
- function getStateVar() constant returns (uint stateVar) {
+ function getStateVar() view returns (uint stateVar) {
stateVar = Scope.stateVar;
}
}
@@ -6791,7 +6791,7 @@ BOOST_AUTO_TEST_CASE(fixed_arrays_as_return_type)
{
char const* sourceCode = R"(
contract A {
- function f(uint16 input) constant returns (uint16[5] arr)
+ function f(uint16 input) pure returns (uint16[5] arr)
{
arr[0] = input;
arr[1] = ++input;
@@ -6820,7 +6820,7 @@ BOOST_AUTO_TEST_CASE(internal_types_in_library)
{
char const* sourceCode = R"(
library Lib {
- function find(uint16[] storage _haystack, uint16 _needle) constant returns (uint)
+ function find(uint16[] storage _haystack, uint16 _needle) view returns (uint)
{
for (uint i = 0; i < _haystack.length; ++i)
if (_haystack[i] == _needle)
@@ -9913,12 +9913,12 @@ BOOST_AUTO_TEST_CASE(keccak256_assembly)
{
char const* sourceCode = R"(
contract C {
- function f() returns (bytes32 ret) {
+ function f() pure returns (bytes32 ret) {
assembly {
ret := keccak256(0, 0)
}
}
- function g() returns (bytes32 ret) {
+ function g() pure returns (bytes32 ret) {
assembly {
0
0
@@ -9926,12 +9926,12 @@ BOOST_AUTO_TEST_CASE(keccak256_assembly)
=: ret
}
}
- function h() returns (bytes32 ret) {
+ function h() pure returns (bytes32 ret) {
assembly {
ret := sha3(0, 0)
}
}
- function i() returns (bytes32 ret) {
+ function i() pure returns (bytes32 ret) {
assembly {
0
0
@@ -9979,7 +9979,7 @@ BOOST_AUTO_TEST_CASE(inlineasm_empty_let)
{
char const* sourceCode = R"(
contract C {
- function f() returns (uint a, uint b) {
+ function f() pure returns (uint a, uint b) {
assembly {
let x
let y, z
@@ -9998,13 +9998,13 @@ BOOST_AUTO_TEST_CASE(bare_call_invalid_address)
char const* sourceCode = R"(
contract C {
/// Calling into non-existant account is successful (creates the account)
- function f() external constant returns (bool) {
+ function f() external view returns (bool) {
return address(0x4242).call();
}
- function g() external constant returns (bool) {
+ function g() external view returns (bool) {
return address(0x4242).callcode();
}
- function h() external constant returns (bool) {
+ function h() external view returns (bool) {
return address(0x4242).delegatecall();
}
}
@@ -10023,16 +10023,16 @@ BOOST_AUTO_TEST_CASE(delegatecall_return_value)
function set(uint _value) external {
value = _value;
}
- function get() external constant returns (uint) {
+ function get() external view returns (uint) {
return value;
}
- function get_delegated() external constant returns (bool) {
+ function get_delegated() external view returns (bool) {
return this.delegatecall(bytes4(sha3("get()")));
}
- function assert0() external constant {
+ function assert0() external view {
assert(value == 0);
}
- function assert0_delegated() external constant returns (bool) {
+ function assert0_delegated() external view returns (bool) {
return this.delegatecall(bytes4(sha3("assert0()")));
}
}
diff --git a/test/libsolidity/SolidityNameAndTypeResolution.cpp b/test/libsolidity/SolidityNameAndTypeResolution.cpp
index 1fbc55a2..04d3d2d3 100644
--- a/test/libsolidity/SolidityNameAndTypeResolution.cpp
+++ b/test/libsolidity/SolidityNameAndTypeResolution.cpp
@@ -1546,7 +1546,7 @@ BOOST_AUTO_TEST_CASE(exp_warn_literal_base)
{
char const* sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
uint8 x = 100;
return 10**x;
}
@@ -1555,7 +1555,7 @@ BOOST_AUTO_TEST_CASE(exp_warn_literal_base)
CHECK_WARNING(sourceCode, "might overflow");
sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
uint8 x = 100;
return uint8(10)**x;
}
@@ -1564,7 +1564,7 @@ BOOST_AUTO_TEST_CASE(exp_warn_literal_base)
CHECK_SUCCESS(sourceCode);
sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
return 2**80;
}
}
@@ -1576,7 +1576,7 @@ BOOST_AUTO_TEST_CASE(shift_warn_literal_base)
{
char const* sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
uint8 x = 100;
return 10 << x;
}
@@ -1585,7 +1585,7 @@ BOOST_AUTO_TEST_CASE(shift_warn_literal_base)
CHECK_WARNING(sourceCode, "might overflow");
sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
uint8 x = 100;
return uint8(10) << x;
}
@@ -1594,7 +1594,7 @@ BOOST_AUTO_TEST_CASE(shift_warn_literal_base)
CHECK_SUCCESS(sourceCode);
sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
return 2 << 80;
}
}
@@ -1602,7 +1602,7 @@ BOOST_AUTO_TEST_CASE(shift_warn_literal_base)
CHECK_SUCCESS(sourceCode);
sourceCode = R"(
contract test {
- function f() returns(uint) {
+ function f() pure returns(uint) {
uint8 x = 100;
return 10 >> x;
}
@@ -1615,7 +1615,7 @@ BOOST_AUTO_TEST_CASE(warn_var_from_zero)
{
char const* sourceCode = R"(
contract test {
- function f() returns (uint) {
+ function f() pure returns (uint) {
var i = 1;
return i;
}
@@ -1624,7 +1624,7 @@ BOOST_AUTO_TEST_CASE(warn_var_from_zero)
CHECK_WARNING(sourceCode, "uint8, which can hold values between 0 and 255");
sourceCode = R"(
contract test {
- function f() {
+ function f() pure {
var i = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;
i;
}
@@ -1633,7 +1633,7 @@ BOOST_AUTO_TEST_CASE(warn_var_from_zero)
CHECK_WARNING(sourceCode, "uint256, which can hold values between 0 and 115792089237316195423570985008687907853269984665640564039457584007913129639935");
sourceCode = R"(
contract test {
- function f() {
+ function f() pure {
var i = -2;
i;
}
@@ -1642,7 +1642,7 @@ BOOST_AUTO_TEST_CASE(warn_var_from_zero)
CHECK_WARNING(sourceCode, "int8, which can hold values between -128 and 127");
sourceCode = R"(
contract test {
- function f() {
+ function f() pure {
for (var i = 0; i < msg.data.length; i++) { }
}
}
@@ -2642,7 +2642,7 @@ BOOST_AUTO_TEST_CASE(uninitialized_mapping_array_variable)
{
char const* sourceCode = R"(
contract C {
- function f() {
+ function f() pure {
mapping(uint => uint)[] storage x;
x;
}
@@ -3973,7 +3973,7 @@ BOOST_AUTO_TEST_CASE(rational_unary_operation)
{
char const* text = R"(
contract test {
- function f() {
+ function f() pure {
ufixed16x2 a = 3.25;
fixed16x2 b = -3.25;
a; b;
@@ -3983,7 +3983,7 @@ BOOST_AUTO_TEST_CASE(rational_unary_operation)
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract test {
- function f() {
+ function f() pure {
ufixed16x2 a = +3.25;
fixed16x2 b = -3.25;
a; b;
@@ -3993,7 +3993,7 @@ BOOST_AUTO_TEST_CASE(rational_unary_operation)
CHECK_WARNING(text, "Use of unary + is deprecated");
text = R"(
contract test {
- function f(uint x) {
+ function f(uint x) pure {
uint y = +x;
y;
}
@@ -4006,7 +4006,7 @@ BOOST_AUTO_TEST_CASE(leading_zero_rationals_convert)
{
char const* text = R"(
contract A {
- function f() {
+ function f() pure {
ufixed16x2 a = 0.5;
ufixed256x52 b = 0.0000000000000006661338147750939242541790008544921875;
fixed16x2 c = -0.5;
@@ -4519,7 +4519,7 @@ BOOST_AUTO_TEST_CASE(warn_about_callcode)
{
char const* text = R"(
contract test {
- function f() {
+ function f() pure {
var x = address(0x12).callcode;
x;
}
@@ -4532,7 +4532,7 @@ BOOST_AUTO_TEST_CASE(no_warn_about_callcode_as_function)
{
char const* text = R"(
contract test {
- function callcode() {
+ function callcode() pure {
test.callcode();
}
}
@@ -5234,7 +5234,7 @@ BOOST_AUTO_TEST_CASE(inline_assembly_storage_variable_access_out_of_functions)
char const* text = R"(
contract test {
uint a;
- function f() {
+ function f() pure {
assembly {
function g() -> x { x := a_slot }
}
@@ -5275,7 +5275,7 @@ BOOST_AUTO_TEST_CASE(warns_msg_value_in_non_payable_public_function)
{
char const* text = R"(
contract C {
- function f() {
+ function f() view {
msg.value;
}
}
@@ -5299,7 +5299,7 @@ BOOST_AUTO_TEST_CASE(does_not_warn_msg_value_in_internal_function)
{
char const* text = R"(
contract C {
- function f() internal {
+ function f() view internal {
msg.value;
}
}
@@ -5311,7 +5311,7 @@ BOOST_AUTO_TEST_CASE(does_not_warn_msg_value_in_library)
{
char const* text = R"(
library C {
- function f() {
+ function f() view {
msg.value;
}
}
@@ -5323,7 +5323,7 @@ BOOST_AUTO_TEST_CASE(does_not_warn_msg_value_in_modifier_following_non_payable_p
{
char const* text = R"(
contract c {
- function f() { }
+ function f() pure { }
modifier m() { msg.value; _; }
}
)";
@@ -5402,7 +5402,7 @@ BOOST_AUTO_TEST_CASE(invalid_address_checksum)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
address x = 0xFA0bFc97E48458494Ccd857e1A85DC91F7F0046E;
x;
}
@@ -5415,7 +5415,7 @@ BOOST_AUTO_TEST_CASE(invalid_address_no_checksum)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
address x = 0xfa0bfc97e48458494ccd857e1a85dc91f7f0046e;
x;
}
@@ -5428,7 +5428,7 @@ BOOST_AUTO_TEST_CASE(invalid_address_length)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
address x = 0xA0bFc97E48458494Ccd857e1A85DC91F7F0046E;
x;
}
@@ -5678,7 +5678,7 @@ BOOST_AUTO_TEST_CASE(warn_about_throw)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
throw;
}
}
@@ -5690,7 +5690,7 @@ BOOST_AUTO_TEST_CASE(bare_revert)
{
char const* text = R"(
contract C {
- function f(uint x) {
+ function f(uint x) pure {
if (x > 7)
revert;
}
@@ -5701,17 +5701,17 @@ BOOST_AUTO_TEST_CASE(bare_revert)
BOOST_AUTO_TEST_CASE(bare_others)
{
- CHECK_WARNING("contract C { function f() { selfdestruct; } }", "Statement has no effect.");
- CHECK_WARNING("contract C { function f() { assert; } }", "Statement has no effect.");
- CHECK_WARNING("contract C { function f() { require; } }", "Statement has no effect.");
- CHECK_WARNING("contract C { function f() { suicide; } }", "Statement has no effect.");
+ CHECK_WARNING("contract C { function f() pure { selfdestruct; } }", "Statement has no effect.");
+ CHECK_WARNING("contract C { function f() pure { assert; } }", "Statement has no effect.");
+ CHECK_WARNING("contract C { function f() pure { require; } }", "Statement has no effect.");
+ CHECK_WARNING("contract C { function f() pure { suicide; } }", "Statement has no effect.");
}
BOOST_AUTO_TEST_CASE(pure_statement_in_for_loop)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
for (uint x = 0; x < 10; true)
x++;
}
@@ -5724,7 +5724,7 @@ BOOST_AUTO_TEST_CASE(pure_statement_check_for_regular_for_loop)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
for (uint x = 0; true; x++)
{}
}
@@ -5780,7 +5780,7 @@ BOOST_AUTO_TEST_CASE(nowarn_swap_memory)
char const* text = R"(
contract C {
struct S { uint a; uint b; }
- function f() {
+ function f() pure {
S memory x;
S memory y;
(x, y) = (y, x);
@@ -5811,7 +5811,7 @@ BOOST_AUTO_TEST_CASE(warn_unused_local)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
uint a;
}
}
@@ -5823,7 +5823,7 @@ BOOST_AUTO_TEST_CASE(warn_unused_local_assigned)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
uint a = 1;
}
}
@@ -5835,14 +5835,14 @@ BOOST_AUTO_TEST_CASE(warn_unused_function_parameter)
{
char const* text = R"(
contract C {
- function f(uint a) {
+ function f(uint a) pure {
}
}
)";
CHECK_WARNING(text, "Unused function parameter. Remove or comment out the variable name to silence this warning.");
text = R"(
contract C {
- function f(uint a) {
+ function f(uint a) pure {
}
}
)";
@@ -5853,14 +5853,14 @@ BOOST_AUTO_TEST_CASE(warn_unused_return_parameter)
{
char const* text = R"(
contract C {
- function f() returns (uint a) {
+ function f() pure returns (uint a) {
}
}
)";
CHECK_WARNING(text, "Unused function parameter. Remove or comment out the variable name to silence this warning.");
text = R"(
contract C {
- function f() returns (uint a) {
+ function f() pure returns (uint a) {
return;
}
}
@@ -5868,14 +5868,14 @@ BOOST_AUTO_TEST_CASE(warn_unused_return_parameter)
CHECK_WARNING(text, "Unused function parameter. Remove or comment out the variable name to silence this warning.");
text = R"(
contract C {
- function f() returns (uint) {
+ function f() pure returns (uint) {
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
- function f() returns (uint a) {
+ function f() pure returns (uint a) {
a = 1;
}
}
@@ -5883,7 +5883,7 @@ BOOST_AUTO_TEST_CASE(warn_unused_return_parameter)
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
- function f() returns (uint a) {
+ function f() pure returns (uint a) {
return 1;
}
}
@@ -5895,7 +5895,7 @@ BOOST_AUTO_TEST_CASE(no_unused_warnings)
{
char const* text = R"(
contract C {
- function f(uint a) returns (uint b) {
+ function f(uint a) pure returns (uint b) {
uint c = 1;
b = a + c;
}
@@ -5908,7 +5908,7 @@ BOOST_AUTO_TEST_CASE(no_unused_dec_after_use)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
a = 7;
uint a;
}
@@ -5921,7 +5921,7 @@ BOOST_AUTO_TEST_CASE(no_unused_inline_asm)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
uint a;
assembly {
a := 1
@@ -5936,7 +5936,7 @@ BOOST_AUTO_TEST_CASE(shadowing_builtins_with_functions)
{
char const* text = R"(
contract C {
- function keccak256() {}
+ function keccak256() pure {}
}
)";
CHECK_WARNING(text, "shadows a builtin symbol");
@@ -5946,7 +5946,7 @@ BOOST_AUTO_TEST_CASE(shadowing_builtins_with_variables)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
uint msg;
msg;
}
@@ -5978,7 +5978,7 @@ BOOST_AUTO_TEST_CASE(shadowing_builtins_with_parameters)
{
char const* text = R"(
contract C {
- function f(uint require) {
+ function f(uint require) pure {
require = 2;
}
}
@@ -5990,7 +5990,7 @@ BOOST_AUTO_TEST_CASE(shadowing_builtins_with_return_parameters)
{
char const* text = R"(
contract C {
- function f() returns (uint require) {
+ function f() pure returns (uint require) {
require = 2;
}
}
@@ -6034,8 +6034,8 @@ BOOST_AUTO_TEST_CASE(function_overload_is_not_shadowing)
{
char const* text = R"(
contract C {
- function f() {}
- function f(uint) {}
+ function f() pure {}
+ function f(uint) pure {}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
@@ -6044,9 +6044,9 @@ BOOST_AUTO_TEST_CASE(function_overload_is_not_shadowing)
BOOST_AUTO_TEST_CASE(function_override_is_not_shadowing)
{
char const* text = R"(
- contract D { function f() {} }
+ contract D { function f() pure {} }
contract C is D {
- function f(uint) {}
+ function f(uint) pure {}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
@@ -6140,7 +6140,7 @@ BOOST_AUTO_TEST_CASE(does_not_error_transfer_regular_function)
{
char const* text = R"(
contract A {
- function transfer() {}
+ function transfer() pure {}
}
contract B {
@@ -6176,7 +6176,7 @@ BOOST_AUTO_TEST_CASE(warn_unspecified_storage)
contract C {
struct S { uint a; string b; }
S x;
- function f() {
+ function f() view {
S storage y = x;
y;
}
@@ -6187,7 +6187,7 @@ BOOST_AUTO_TEST_CASE(warn_unspecified_storage)
contract C {
struct S { uint a; }
S x;
- function f() {
+ function f() view {
S y = x;
y;
}
@@ -6213,21 +6213,21 @@ BOOST_AUTO_TEST_CASE(too_large_arrays_for_calldata)
{
char const* text = R"(
contract C {
- function f(uint[85678901234] a) external {
+ function f(uint[85678901234] a) pure external {
}
}
)";
CHECK_ERROR(text, TypeError, "Array is too large to be encoded.");
text = R"(
contract C {
- function f(uint[85678901234] a) internal {
+ function f(uint[85678901234] a) pure internal {
}
}
)";
CHECK_ERROR(text, TypeError, "Array is too large to be encoded.");
text = R"(
contract C {
- function f(uint[85678901234] a) {
+ function f(uint[85678901234] a) pure {
}
}
)";
@@ -6238,7 +6238,7 @@ BOOST_AUTO_TEST_CASE(explicit_literal_to_storage_string)
{
char const* text = R"(
contract C {
- function f() {
+ function f() pure {
string memory x = "abc";
x;
}
@@ -6247,7 +6247,7 @@ BOOST_AUTO_TEST_CASE(explicit_literal_to_storage_string)
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
- function f() {
+ function f() pure {
string storage x = "abc";
}
}
@@ -6255,7 +6255,7 @@ BOOST_AUTO_TEST_CASE(explicit_literal_to_storage_string)
CHECK_ERROR(text, TypeError, "Type literal_string \"abc\" is not implicitly convertible to expected type string storage pointer.");
text = R"(
contract C {
- function f() {
+ function f() pure {
string x = "abc";
}
}
@@ -6263,7 +6263,7 @@ BOOST_AUTO_TEST_CASE(explicit_literal_to_storage_string)
CHECK_ERROR(text, TypeError, "Type literal_string \"abc\" is not implicitly convertible to expected type string storage pointer.");
text = R"(
contract C {
- function f() {
+ function f() pure {
string("abc");
}
}
@@ -6292,7 +6292,7 @@ BOOST_AUTO_TEST_CASE(using_this_in_constructor)
function C() {
this.f();
}
- function f() {
+ function f() pure {
}
}
)";
@@ -6559,7 +6559,7 @@ BOOST_AUTO_TEST_CASE(tight_packing_literals)
{
char const* text = R"(
contract C {
- function f() returns (bytes32) {
+ function f() pure returns (bytes32) {
return keccak256(1);
}
}
@@ -6567,7 +6567,7 @@ BOOST_AUTO_TEST_CASE(tight_packing_literals)
CHECK_WARNING(text, "The type of \"int_const 1\" was inferred as uint8.");
text = R"(
contract C {
- function f() returns (bytes32) {
+ function f() pure returns (bytes32) {
return keccak256(uint8(1));
}
}
@@ -6575,7 +6575,7 @@ BOOST_AUTO_TEST_CASE(tight_packing_literals)
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
- function f() returns (bytes32) {
+ function f() pure returns (bytes32) {
return sha3(1);
}
}
@@ -6583,7 +6583,7 @@ BOOST_AUTO_TEST_CASE(tight_packing_literals)
CHECK_WARNING(text, "The type of \"int_const 1\" was inferred as uint8.");
text = R"(
contract C {
- function f() returns (bytes32) {
+ function f() pure returns (bytes32) {
return sha256(1);
}
}
@@ -6591,7 +6591,7 @@ BOOST_AUTO_TEST_CASE(tight_packing_literals)
CHECK_WARNING(text, "The type of \"int_const 1\" was inferred as uint8.");
text = R"(
contract C {
- function f() returns (bytes32) {
+ function f() pure returns (bytes32) {
return ripemd160(1);
}
}
diff --git a/test/libsolidity/ViewPureChecker.cpp b/test/libsolidity/ViewPureChecker.cpp
new file mode 100644
index 00000000..9cea9850
--- /dev/null
+++ b/test/libsolidity/ViewPureChecker.cpp
@@ -0,0 +1,398 @@
+/*
+ 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/>.
+*/
+/**
+ * Unit tests for the view and pure checker.
+ */
+
+#include <test/libsolidity/AnalysisFramework.h>
+
+#include <boost/test/unit_test.hpp>
+
+#include <string>
+
+using namespace std;
+
+namespace dev
+{
+namespace solidity
+{
+namespace test
+{
+
+BOOST_FIXTURE_TEST_SUITE(ViewPureChecker, AnalysisFramework)
+
+BOOST_AUTO_TEST_CASE(smoke_test)
+{
+ char const* text = R"(
+ contract C {
+ uint x;
+ function g() pure {}
+ function f() view returns (uint) { return now; }
+ function h() { x = 2; }
+ function i() payable { x = 2; }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(call_internal_functions_success)
+{
+ char const* text = R"(
+ contract C {
+ function g() pure { g(); }
+ function f() view returns (uint) { f(); g(); }
+ function h() { h(); g(); f(); }
+ function i() payable { i(); h(); g(); f(); }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(suggest_pure)
+{
+ char const* text = R"(
+ contract C {
+ function g() view { }
+ }
+ )";
+ CHECK_WARNING(text, "can be restricted to pure");
+}
+
+BOOST_AUTO_TEST_CASE(suggest_view)
+{
+ char const* text = R"(
+ contract C {
+ uint x;
+ function g() returns (uint) { return x; }
+ }
+ )";
+ CHECK_WARNING(text, "can be restricted to view");
+}
+
+BOOST_AUTO_TEST_CASE(call_internal_functions_fail)
+{
+ CHECK_ERROR(
+ "contract C{ function f() pure { g(); } function g() view {} }",
+ TypeError,
+ "Function declared as pure, but this expression (potentially) reads from the environment or state and thus requires \"view\""
+ );
+}
+
+BOOST_AUTO_TEST_CASE(write_storage_fail)
+{
+ CHECK_WARNING(
+ "contract C{ uint x; function f() view { x = 2; } }",
+ "Function declared as view, but this expression (potentially) modifies the state and thus requires non-payable (the default) or payable."
+ );
+}
+
+BOOST_AUTO_TEST_CASE(environment_access)
+{
+ vector<string> view{
+ "block.coinbase",
+ "block.timestamp",
+ "block.blockhash(7)",
+ "block.difficulty",
+ "block.number",
+ "block.gaslimit",
+ "msg.gas",
+ "msg.value",
+ "msg.sender",
+ "tx.origin",
+ "tx.gasprice",
+ "this",
+ "address(1).balance"
+ };
+ vector<string> pure{
+ "msg.data",
+ "msg.data[0]",
+ "msg.sig",
+ "block.blockhash", // Not evaluating the function
+ "msg",
+ "block",
+ "tx"
+ };
+ for (string const& x: view)
+ {
+ CHECK_ERROR(
+ "contract C { function f() pure { var x = " + x + "; x; } }",
+ TypeError,
+ "Function declared as pure, but this expression (potentially) reads from the environment or state and thus requires \"view\""
+ );
+ }
+ for (string const& x: pure)
+ {
+ CHECK_WARNING(
+ "contract C { function f() view { var x = " + x + "; x; } }",
+ "restricted to pure"
+ );
+ }
+}
+
+BOOST_AUTO_TEST_CASE(modifiers)
+{
+ string text = R"(
+ contract D {
+ uint x;
+ modifier purem(uint) { _; }
+ modifier viewm(uint) { uint a = x; _; a; }
+ modifier nonpayablem(uint) { x = 2; _; }
+ }
+ contract C is D {
+ function f() purem(0) pure {}
+ function g() viewm(0) view {}
+ function h() nonpayablem(0) {}
+ function i() purem(x) view {}
+ function j() viewm(x) view {}
+ function k() nonpayablem(x) {}
+ function l() purem(x = 2) {}
+ function m() viewm(x = 2) {}
+ function n() nonpayablem(x = 2) {}
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(interface)
+{
+ string text = R"(
+ interface D {
+ function f() view;
+ }
+ contract C is D {
+ function f() view {}
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(overriding)
+{
+ string text = R"(
+ contract D {
+ uint x;
+ function f() { x = 2; }
+ }
+ contract C is D {
+ function f() {}
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(returning_structs)
+{
+ string text = R"(
+ contract C {
+ struct S { uint x; }
+ S s;
+ function f() view internal returns (S storage) {
+ return s;
+ }
+ function g()
+ {
+ f().x = 2;
+ }
+ function h() view
+ {
+ f();
+ f().x;
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(mappings)
+{
+ string text = R"(
+ contract C {
+ mapping(uint => uint) a;
+ function f() view {
+ a;
+ }
+ function g() view {
+ a[2];
+ }
+ function h() {
+ a[2] = 3;
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(local_storage_variables)
+{
+ string text = R"(
+ contract C {
+ struct S { uint a; }
+ S s;
+ function f() view {
+ S storage x = s;
+ x;
+ }
+ function g() view {
+ S storage x = s;
+ x = s;
+ }
+ function i() {
+ s.a = 2;
+ }
+ function h() {
+ S storage x = s;
+ x.a = 2;
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(builtin_functions)
+{
+ string text = R"(
+ contract C {
+ function f() {
+ this.transfer(1);
+ require(this.send(2));
+ selfdestruct(this);
+ require(this.delegatecall());
+ require(this.call());
+ }
+ function g() pure {
+ var x = keccak256("abc");
+ var y = sha256("abc");
+ var z = ecrecover(1, 2, 3, 4);
+ require(true);
+ assert(true);
+ x; y; z;
+ }
+ function() payable {}
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(function_types)
+{
+ string text = R"(
+ contract C {
+ function f() pure {
+ function () external nonpayFun;
+ function () external view viewFun;
+ function () external pure pureFun;
+
+ nonpayFun;
+ viewFun;
+ pureFun;
+ pureFun();
+ }
+ function g() view {
+ function () external view viewFun;
+
+ viewFun();
+ }
+ function h() {
+ function () external nonpayFun;
+
+ nonpayFun();
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(creation)
+{
+ string text = R"(
+ contract D {}
+ contract C {
+ function f() { new D(); }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(assembly)
+{
+ string text = R"(
+ contract C {
+ struct S { uint x; }
+ S s;
+ function e() pure {
+ assembly { mstore(keccak256(0, 20), mul(s_slot, 2)) }
+ }
+ function f() pure {
+ uint x;
+ assembly { x := 7 }
+ }
+ function g() view {
+ assembly { for {} 1 { pop(sload(0)) } { } }
+ }
+ function h() view {
+ assembly { function g() { pop(blockhash(20)) } }
+ }
+ function j() {
+ assembly { pop(call(0, 1, 2, 3, 4, 5, 6)) }
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_CASE(assembly_staticcall)
+{
+ string text = R"(
+ contract C {
+ function i() view {
+ assembly { pop(staticcall(0, 1, 2, 3, 4, 5)) }
+ }
+ }
+ )";
+ CHECK_WARNING(text, "only available after the Metropolis");
+}
+
+BOOST_AUTO_TEST_CASE(assembly_jump)
+{
+ string text = R"(
+ contract C {
+ function k() {
+ assembly { jump(2) }
+ }
+ }
+ )";
+ CHECK_WARNING(text, "low-level EVM features");
+}
+
+BOOST_AUTO_TEST_CASE(constant)
+{
+ string text = R"(
+ contract C {
+ uint constant x = 2;
+ function k() pure returns (uint) {
+ return x;
+ }
+ }
+ )";
+ CHECK_SUCCESS_NO_WARNINGS(text);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+}
+}
+}