Add serialization for primitive boost::optional<T>.

src/test/serialize_tests.cpp

@@ -11,11 +11,38 @@
 #include <stdint.h>
 
 #include <boost/test/unit_test.hpp>
+#include <boost/optional.hpp>
 
 using namespace std;
 
+
+template<typename T>
+void check_ser_rep(T thing, std::vector<unsigned char> expected)
+{
+    CDataStream ss(SER_DISK, 0);
+    ss << thing;
+
+    BOOST_CHECK(GetSerializeSize(thing, 0, 0) == ss.size());
+
+    std::vector<unsigned char> serialized_representation(ss.begin(), ss.end());
+
+    BOOST_CHECK(serialized_representation == expected);
+
+    T thing_deserialized;
+    ss >> thing_deserialized;
+
+    BOOST_CHECK(thing_deserialized == thing);
+}
+
 BOOST_FIXTURE_TEST_SUITE(serialize_tests, BasicTestingSetup)
 
+BOOST_AUTO_TEST_CASE(boost_optional)
+{
+    check_ser_rep<boost::optional<unsigned char>>(0xff, {0x01, 0xff});
+    check_ser_rep<boost::optional<unsigned char>>(boost::none, {0x00});
+    check_ser_rep<boost::optional<std::string>>(std::string("Test"), {0x01, 0x04, 'T', 'e', 's', 't'});
+}
+
 BOOST_AUTO_TEST_CASE(boost_arrays)
 {
     boost::array<std::string, 2> test_case = {string("zub"), string("baz")};