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| author | chriseth <chris@ethereum.org> | 2017-10-05 21:23:25 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2017-11-30 08:20:21 +0800 |
| commit | 19e067465a058ca9f40238cb3a928a1113531c9d (patch) | |
| tree | 6b4f83892d5fd76194bd3794669cc59f02e86d37 /test | |
| parent | ffb3a3c06c4d436aaf03efccf31301b472cd8137 (diff) | |
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Unary operators and division.
Diffstat (limited to 'test')
| -rw-r--r-- | test/libsolidity/SMTChecker.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/test/libsolidity/SMTChecker.cpp b/test/libsolidity/SMTChecker.cpp index 667d666b..7aa555e9 100644 --- a/test/libsolidity/SMTChecker.cpp +++ b/test/libsolidity/SMTChecker.cpp @@ -458,6 +458,91 @@ BOOST_AUTO_TEST_CASE(for_loop) CHECK_WARNING(text, "Assertion violation"); } +BOOST_AUTO_TEST_CASE(division) +{ + string text = R"( + contract C { + function f(uint x, uint y) public pure returns (uint) { + return x / y; + } + } + )"; + CHECK_WARNING(text, "Division by zero"); + text = R"( + contract C { + function f(uint x, uint y) public pure returns (uint) { + require(y != 0); + return x / y; + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); + text = R"( + contract C { + function f(int x, int y) public pure returns (int) { + require(y != 0); + return x / y; + } + } + )"; + CHECK_WARNING(text, "Overflow"); + text = R"( + contract C { + function f(int x, int y) public pure returns (int) { + require(y != 0); + require(y != -1); + return x / y; + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); +} + +BOOST_AUTO_TEST_CASE(division_truncates_correctly) +{ + string text = R"( + contract C { + function f(uint x, uint y) public pure { + x = 7; + y = 2; + assert(x / y == 3); + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); + text = R"( + contract C { + function f(int x, int y) public pure { + x = 7; + y = 2; + assert(x / y == 3); + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); + text = R"( + contract C { + function f(int x, int y) public pure { + x = -7; + y = 2; + assert(x / y == -3); + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); + text = R"( + contract C { + function f(int x, int y) public pure { + x = -7; + y = -2; + int r = x / y; + assert(r == 3); + } + } + )"; + CHECK_SUCCESS_NO_WARNINGS(text); +} + BOOST_AUTO_TEST_SUITE_END() } |