1 files changed, 36 insertions, 0 deletions
diff --git a/library/cpp/yt/logging/unittests/structured_payload_ut.cpp b/library/cpp/yt/logging/unittests/structured_payload_ut.cpp
new file mode 100644
index 00000000000..f15970dcb23
--- /dev/null
+++ b/library/cpp/yt/logging/unittests/structured_payload_ut.cpp
@@ -0,0 +1,36 @@
+#include <library/cpp/testing/gtest/gtest.h>
+
+#include <library/cpp/yt/logging/structured_payload.h>
+
+#include <library/cpp/yt/yson_string/string.h>
+
+namespace NYT::NLogging {
+namespace {
+
+using namespace NYson;
+
+////////////////////////////////////////////////////////////////////////////////
+
+TYsonString MakeMapFragment(TStringBuf yson)
+{
+    return TYsonString(yson, EYsonType::MapFragment);
+}
+
+TEST(TStructuredPayloadTest, RoundTrip)
+{
+    auto payload = MakeStructuredPayloadFromYson(MakeMapFragment("\"key\"=\"value\""));
+    auto view = GetYsonFromStructuredPayload(payload);
+    EXPECT_EQ(view.GetType(), EYsonType::MapFragment);
+    EXPECT_EQ(view.AsStringBuf(), "\"key\"=\"value\"");
+}
+
+TEST(TStructuredPayloadTest, EmptyFragment)
+{
+    auto payload = MakeStructuredPayloadFromYson(MakeMapFragment(""));
+    EXPECT_EQ(GetYsonFromStructuredPayload(payload).AsStringBuf(), "");
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace
+} // namespace NYT::NLogging