1 files changed, 29 insertions, 0 deletions
diff --git a/test/redfish-core/include/utils/json_utils_test.cpp b/test/redfish-core/include/utils/json_utils_test.cpp
index 5ef80eeba6..cf5929756b 100644
--- a/test/redfish-core/include/utils/json_utils_test.cpp
+++ b/test/redfish-core/include/utils/json_utils_test.cpp
@@ -6,10 +6,12 @@
 #include <boost/beast/http/status.hpp>
 #include <nlohmann/json.hpp>
 
+#include <cstddef>
 #include <cstdint>
 #include <optional>
 #include <string>
 #include <system_error>
+#include <variant>
 #include <vector>
 
 #include <gmock/gmock.h> // IWYU pragma: keep
@@ -70,6 +72,33 @@ TEST(ReadJson, ValidObjectElementsReturnsTrueResponseOkValuesUnpackedCorrectly)
     EXPECT_THAT(vec, ElementsAre(1, 2, 3));
 }
 
+TEST(ReadJson, VariantValueUnpackedNull)
+{
+    crow::Response res;
+    nlohmann::json jsonRequest = {{"nullval", nullptr}};
+
+    std::variant<std::string, std::nullptr_t> str;
+
+    ASSERT_TRUE(readJson(jsonRequest, res, "nullval", str));
+    EXPECT_EQ(res.result(), boost::beast::http::status::ok);
+
+    EXPECT_TRUE(std::holds_alternative<std::nullptr_t>(str));
+}
+
+TEST(ReadJson, VariantValueUnpackedValue)
+{
+    crow::Response res;
+    nlohmann::json jsonRequest = {{"stringval", "mystring"}};
+
+    std::variant<std::string, std::nullptr_t> str;
+
+    ASSERT_TRUE(readJson(jsonRequest, res, "stringval", str));
+    EXPECT_EQ(res.result(), boost::beast::http::status::ok);
+
+    ASSERT_TRUE(std::holds_alternative<std::string>(str));
+    EXPECT_EQ(std::get<std::string>(str), "mystring");
+}
+
 TEST(readJson, ExtraElementsReturnsFalseReponseIsBadRequest)
 {
     crow::Response res;