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Merge pull request #6046 from ethereum/smt_division_tests

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[SMTChecker] Move tests that contain division to boost tests
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chriseth 2019-02-20 14:29:15 +01:00 committed by GitHub
commit fcd82025de
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4 changed files with 38 additions and 38 deletions
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38
test/libsolidity/SMTChecker.cpp
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@ -94,6 +94,44 @@ BOOST_AUTO_TEST_CASE(division)
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c;
if (a != 0) {
c = a * b;
require(c / a == b);
}
return c;
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
text = R"(
contract C {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
}
)";
CHECK_WARNING(text, "Division by zero");
text = R"(
contract C {
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
}
)";
CHECK_SUCCESS_NO_WARNINGS(text);
}
BOOST_AUTO_TEST_CASE(division_truncates_correctly)

10
test/libsolidity/smtCheckerTests/overflow/safe_div_1.sol
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@ -1,10 +0,0 @@
pragma experimental SMTChecker;
contract C
{
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
}

13
test/libsolidity/smtCheckerTests/overflow/safe_mul_1.sol
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@ -1,13 +0,0 @@
pragma experimental SMTChecker;
contract C
{
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c;
if (a != 0) {
c = a * b;
require(c / a == b);
}
return c;
}
}

15
test/libsolidity/smtCheckerTests/overflow/safe_mul_2.sol
View File

@ -1,15 +0,0 @@
pragma experimental SMTChecker;
contract C
{
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
}
// ----
// Warning: (180-185): Division by zero happens here