Merge new printui tests

tests/api_tests/api_tests.cpp

@@ -108,6 +108,13 @@ string I64Str(int64_t i)
 	return ss.str();
 }
 
+string U64Str(uint64_t i)
+{
+   std::stringstream ss;
+   ss << i;
+   return ss.str();
+}
+
 string U128Str(unsigned __int128 i)
 {
    return fc::variant(fc::uint128_t(i)).get_string();
@@ -914,9 +921,9 @@ BOOST_FIXTURE_TEST_CASE(print_tests, tester) { try {
 
 	// test printi
 	CAPTURE_AND_PRE_TEST_PRINT("test_printi");
-	BOOST_CHECK_EQUAL( captured.substr(0,1), "0" );
-	BOOST_CHECK_EQUAL( captured.substr(1,6), "556644" );
-	BOOST_CHECK_EQUAL( captured.substr(7, capture[3].size()), "-1" );
+	BOOST_CHECK_EQUAL( captured.substr(0,1), I64Str(0) );
+	BOOST_CHECK_EQUAL( captured.substr(1,6), I64Str(556644) );
+	BOOST_CHECK_EQUAL( captured.substr(7, capture[3].size()), I64Str(-1) );
 
 	// test printui
 	CAPTURE_AND_PRE_TEST_PRINT("test_printui");