formats/jpeg/testing/app_segment_creator_test.cc

// 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.
//

#include "formats/jpeg/testing/app_segment_creator.h"

#include <string>
#include <vector>

#include "absl/status/status.h"
#include "absl/status/status_matchers.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"

namespace credentio {
namespace {

using ::absl_testing::StatusIs;

TEST(AppSegmentCreatorTest, CreateAppSegmentsSuccess) {
  AppSegmentParams params;
  // 4 bytes lbox (10), 4 bytes tbox (0x4a554d42), 2 bytes data
  params.payload = std::string("\x00\x00\x00\x0a\x4a\x55\x4d\x42\x01\x02", 10);
  params.max_size = 65535;

  auto segments_or = CreateAppSegments(params);
  ABSL_ASSERT_OK(segments_or);
  EXPECT_EQ(segments_or.value().size(), 1);
}

TEST(AppSegmentCreatorTest, MaxSizeTooSmallReturnsError) {
  AppSegmentParams params;
  // 4 bytes lbox (10), 4 bytes tbox (0x4a554d42), 1 byte data
  params.payload = std::string("\x00\x00\x00\x0a\x4a\x55\x4d\x42\x01", 9);
  // base_le is 18 when lbox != 1. Setting max_size to 18 should trigger an
  // error.
  params.max_size = 18;

  EXPECT_THAT(CreateAppSegments(params),
              StatusIs(absl::StatusCode::kInvalidArgument));
}

}  // namespace
}  // namespace credentio