jumbf/test_utils.h

// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef THIRD_PARTY_CREDENTIO_JUMBF_TEST_UTILS_H_
#define THIRD_PARTY_CREDENTIO_JUMBF_TEST_UTILS_H_

#include <stdbool.h>

#include <cstdint>
#include <optional>
#include <string>

#include "absl/strings/cord.h"
#include "absl/strings/string_view.h"
#include "absl/types/span.h"
#include "uuid/uuid.h"

namespace jumbf {

// Wraps `content` in the basic box structure (section 4.3)
std::string WrapBox(absl::string_view content, uint32_t tbox);

// Wraps `content` in the basic box structure, using an LBox value of 0
// (section 4.3)
std::string WrapUndeterminedLengthBox(absl::string_view content, uint32_t tbox);

// Serializes a 16 byte UUID in RFC 4122 (ISO / IEC 11578) format and advances
// `dest`.
void SerializeUuid(char** dest, credentio::Uuid uuid);

// Serializes a description box (section A.3) with the given UUID and label.
std::string EncodeDescriptionBox(credentio::Uuid uuid,
                                 std::optional<absl::string_view> label,
                                 bool requestable = false);

// Serializes a CBOR box (section B.7) with the given contents.
std::string EncodeCborBox(absl::string_view contents);

// Serializes a superbox (section A.2) with the given UUID, label, and
// contents.
std::string EncodeSuperBox(credentio::Uuid uuid,
                           std::optional<absl::string_view> label,
                           absl::Span<const absl::string_view> contents,
                           bool requestable = false);

// This is only safe if the array backing `data` is a compile-time constant.
absl::Cord CordFromConstexpr(absl::string_view data);

}  // namespace jumbf

#endif  // THIRD_PARTY_CREDENTIO_JUMBF_TEST_UTILS_H_