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-rw-r--r--test/libsolidity/SMTChecker.cpp98
1 files changed, 96 insertions, 2 deletions
diff --git a/test/libsolidity/SMTChecker.cpp b/test/libsolidity/SMTChecker.cpp
index 667d666b..38d02601 100644
--- a/test/libsolidity/SMTChecker.cpp
+++ b/test/libsolidity/SMTChecker.cpp
@@ -351,9 +351,9 @@ BOOST_AUTO_TEST_CASE(while_loop_simple)
// Check that side-effects of condition are taken into account
text = R"(
contract C {
- function f(uint x) public pure {
+ function f(uint x, uint y) public pure {
x = 7;
- while ((x = 5) > 0) {
+ while ((x = y) > 0) {
}
assert(x == 7);
}
@@ -458,6 +458,100 @@ 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;
+ 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);
+}
+
BOOST_AUTO_TEST_SUITE_END()
}