EXPECT_EQ(
      MakeSavedModelPathAndSingleprint("path", "singleprint").value_or(""),
      "path:singleprint");
}

TEST(MetricsTest, TestInvalidMakePathAndSingleprint) {
  EXPECT_THAT(MakeSavedModelPathAndSingleprint("", "singleprint"),
              testing::StatusIs(absl::StatusCode::kInvalidArgument));
  EXPECT_THAT(MakeSavedModelPathAndSingleprint("path", ""),

// Returns the fingerprint as a Json string.
std::string MakeFingerprintJson(FingerprintDef fingerprint_def);

// Returns canonical string concatenation of path and singleprint.
absl::StatusOr<std::string> MakeSavedModelPathAndSingleprint(
    std::string path, std::string singleprint);

// Returns path and singleprint as a pair, parsed canonically from the string
// metric.
absl::StatusOr<std::pair<std::string, std::string>>

    metrics::SavedModelReadFingerprint().Set(
        metrics::MakeFingerprintJson(fingerprint_proto.value()));

    TF_ASSIGN_OR_RETURN(
        std::string path_and_singleprint,
        metrics::MakeSavedModelPathAndSingleprint(
            export_dir, saved_model::fingerprinting::Singleprint(
                            fingerprint_proto.value())));
    metrics::SavedModelReadPathAndSingleprint().Set(path_and_singleprint);
  }

      Json::UInt64(fingerprint_def.checkpoint_hash());

  Json::StreamWriterBuilder json_factory;
  return Json::writeString(json_factory, fingerprint);
}

absl::StatusOr<std::string> MakeSavedModelPathAndSingleprint(
    std::string path, std::string singleprint) {
  if (path.empty()) {
    return absl::InvalidArgumentError(
        "Invalid path_and_singleprint argument. Empty path.");
  }