Test for bytes in mapping.

test/SolidityEndToEndTest.cpp

@@ -2385,6 +2385,30 @@ BOOST_AUTO_TEST_CASE(copy_removes_bytes_data)
 	BOOST_CHECK(m_state.storage(m_contractAddress).empty());
 }
 
+BOOST_AUTO_TEST_CASE(bytes_inside_mappings)
+{
+	char const* sourceCode = R"(
+		contract c {
+			function set(uint key) returns (bool) { data[key] = msg.data; return true; }
+			function copy(uint from, uint to) returns (bool) { data[to] = data[from]; return true; }
+			mapping(uint => bytes) data;
+		}
+	)";
+	compileAndRun(sourceCode);
+	// store a short byte array at 1 and a longer one at 2
+	BOOST_CHECK(callContractFunction("set(uint256)", 1, 2) == encodeArgs(true));
+	BOOST_CHECK(callContractFunction("set(uint256)", 2, 2, 3, 4, 5) == encodeArgs(true));
+	BOOST_CHECK(!m_state.storage(m_contractAddress).empty());
+	// copy shorter to longer
+	BOOST_CHECK(callContractFunction("copy(uint256,uint256)", 1, 2) == encodeArgs(true));
+	BOOST_CHECK(!m_state.storage(m_contractAddress).empty());
+	// copy empty to both
+	BOOST_CHECK(callContractFunction("copy(uint256,uint256)", 99, 1) == encodeArgs(true));
+	BOOST_CHECK(!m_state.storage(m_contractAddress).empty());
+	BOOST_CHECK(callContractFunction("copy(uint256,uint256)", 99, 2) == encodeArgs(true));
+	BOOST_CHECK(m_state.storage(m_contractAddress).empty());
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 }