From 134f5cb7985965c9fb5756979b4912153f043062 Mon Sep 17 00:00:00 2001
From: mordax <maya@mordax.io>
Date: Sat, 13 Oct 2018 20:22:39 -0400
Subject: Added test for flipping signs on signed type edge case
---
test/libsolidity/SolidityEndToEndTest.cpp | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index 7a496e64..133387c8 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -14010,6 +14010,21 @@ BOOST_AUTO_TEST_CASE(test_underscore_in_hex)
ABI_CHECK(callContractFunction("f(bool)", false), encodeArgs(u256(0x1234abcd1234)));
}
+BOOST_AUTO_TEST_CASE(flipping_sign_tests)
+{
+ char const* sourceCode = R"(
+ contract test {
+ function f() public returns (bool){
+ int x = -2**255;
+ assert(-x == x);
+ return true;
+ }
+ }
+ )";
+ compileAndRun(sourceCode);
+ ABI_CHECK(callContractFunction("f()"), encodeArgs(true));
+}
+
BOOST_AUTO_TEST_SUITE_END()
}
--
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