shaka-packager/packager/hls/base/media_playlist_unittest.cc

// Copyright 2016 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

#include <gmock/gmock.h>
#include <gtest/gtest.h>

#include "packager/hls/base/media_playlist.h"
#include "packager/media/file/file_test_util.h"
#include "packager/version/version.h"

namespace shaka {
namespace hls {

using ::testing::_;
using ::testing::ReturnArg;

namespace {

const char kDefaultPlaylistFileName[] = "default_playlist.m3u8";
const double kTimeShiftBufferDepth = 20;
const uint64_t kTimeScale = 90000;
const uint64_t kMBytes = 1000000;

MATCHER_P(MatchesString, expected_string, "") {
  const std::string arg_string(static_cast<const char*>(arg));
  *result_listener << "which is " << arg_string.size()
                   << " long and the content is " << arg_string;
  return expected_string == std::string(static_cast<const char*>(arg));
}

}  // namespace

class MediaPlaylistTest : public ::testing::Test {
 protected:
  MediaPlaylistTest()
      : MediaPlaylistTest(MediaPlaylist::MediaPlaylistType::kVod) {}

  MediaPlaylistTest(MediaPlaylist::MediaPlaylistType type)
      : default_file_name_(kDefaultPlaylistFileName),
        default_name_("default_name"),
        default_group_id_("default_group_id"),
        media_playlist_(type,
                        kTimeShiftBufferDepth,
                        default_file_name_,
                        default_name_,
                        default_group_id_) {}

  void SetUp() override {
    SetPackagerVersionForTesting("test");

    MediaInfo::VideoInfo* video_info =
        valid_video_media_info_.mutable_video_info();
    video_info->set_codec("avc1");
    video_info->set_time_scale(kTimeScale);
    video_info->set_frame_duration(3000);
    video_info->set_width(1280);
    video_info->set_height(720);
    video_info->set_pixel_width(1);
    video_info->set_pixel_height(1);

    valid_video_media_info_.set_reference_time_scale(kTimeScale);
  }

  const std::string default_file_name_;
  const std::string default_name_;
  const std::string default_group_id_;
  MediaPlaylist media_playlist_;

  MediaInfo valid_video_media_info_;
};

// Verify that SetMediaInfo() fails if timescale is not present.
TEST_F(MediaPlaylistTest, NoTimeScale) {
  MediaInfo media_info;
  EXPECT_FALSE(media_playlist_.SetMediaInfo(media_info));
}

// The current implementation only handles video and audio.
TEST_F(MediaPlaylistTest, NoAudioOrVideo) {
  MediaInfo media_info;
  media_info.set_reference_time_scale(kTimeScale);
  MediaInfo::TextInfo* text_info = media_info.mutable_text_info();
  text_info->set_format("vtt");
  EXPECT_FALSE(media_playlist_.SetMediaInfo(media_info));
}

TEST_F(MediaPlaylistTest, SetMediaInfo) {
  MediaInfo media_info;
  media_info.set_reference_time_scale(kTimeScale);
  MediaInfo::VideoInfo* video_info = media_info.mutable_video_info();
  video_info->set_width(1280);
  video_info->set_height(720);
  EXPECT_TRUE(media_playlist_.SetMediaInfo(media_info));
}

// Verify that AddSegment works (not crash).
TEST_F(MediaPlaylistTest, AddSegment) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));
  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
}

// Verify that AddEncryptionInfo works (not crash).
TEST_F(MediaPlaylistTest, AddEncryptionInfo) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));
  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0xabcedf", "",
                                    "");
}

TEST_F(MediaPlaylistTest, WriteToFile) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:0\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

// If bitrate (bandwidth) is not set in the MediaInfo, use it.
TEST_F(MediaPlaylistTest, UseBitrateInMediaInfo) {
  valid_video_media_info_.set_bandwidth(8191);
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));
  EXPECT_EQ(8191u, media_playlist_.Bitrate());
}

// If bitrate (bandwidth) is not set in the MediaInfo, then calculate from the
// segments.
TEST_F(MediaPlaylistTest, GetBitrateFromSegments) {
  valid_video_media_info_.clear_bandwidth();
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             5 * kMBytes);

  // Max bitrate is 2000Kb/s.
  EXPECT_EQ(2000000u, media_playlist_.Bitrate());
}

TEST_F(MediaPlaylistTest, GetLongestSegmentDuration) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  media_playlist_.AddSegment("file3.ts", 40 * kTimeScale, 14 * kTimeScale,
                             3 * kMBytes);

  EXPECT_NEAR(30.0, media_playlist_.GetLongestSegmentDuration(), 0.01);
}

TEST_F(MediaPlaylistTest, WriteToFileWithSegments) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(MediaPlaylistTest, WriteToFileWithEncryptionInfo) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x12345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x12345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(MediaPlaylistTest, WriteToFileWithEncryptionInfoEmptyIv) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "", "com.widevine",
                                    "");
  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",KEYFORMAT=\"com.widevine\"\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

// Verify that EXT-X-DISCONTINUITY is inserted before EXT-X-KEY.
TEST_F(MediaPlaylistTest, WriteToFileWithClearLead) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x12345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXT-X-DISCONTINUITY\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x12345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}


TEST_F(MediaPlaylistTest, RemoveOldestSegment) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  media_playlist_.RemoveOldestSegment();

  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(MediaPlaylistTest, GetLanguage) {
  MediaInfo media_info;
  media_info.set_reference_time_scale(kTimeScale);

  // Check conversions from long to short form.
  media_info.mutable_audio_info()->set_language("eng");
  ASSERT_TRUE(media_playlist_.SetMediaInfo(media_info));
  EXPECT_EQ("en", media_playlist_.GetLanguage());  // short form

  media_info.mutable_audio_info()->set_language("eng-US");
  ASSERT_TRUE(media_playlist_.SetMediaInfo(media_info));
  EXPECT_EQ("en-US", media_playlist_.GetLanguage());  // region preserved

  media_info.mutable_audio_info()->set_language("apa");
  ASSERT_TRUE(media_playlist_.SetMediaInfo(media_info));
  EXPECT_EQ("apa", media_playlist_.GetLanguage());  // no short form exists
}

TEST_F(MediaPlaylistTest, InitSegment) {
  valid_video_media_info_.set_init_segment_name("init_segment.mp4");
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.mp4", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.mp4", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);

  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-MAP:URI=\"init_segment.mp4\"\n"
      "#EXTINF:10.000,\n"
      "file1.mp4\n"
      "#EXTINF:30.000,\n"
      "file2.mp4\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

// Verify that kSampleAesCenc is handled correctly.
TEST_F(MediaPlaylistTest, SampleAesCenc) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAesCenc, "http://example.com", "",
      "0x12345678", "com.widevine", "1/2/4");

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES-CENC,"
      "URI=\"http://example.com\",IV=0x12345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

// Verify that multiple encryption info can be set.
TEST_F(MediaPlaylistTest, MultipleEncryptionInfo) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x12345678",
                                    "com.widevine", "1/2/4");

  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAes, "http://mydomain.com",
      "0xfedc", "0x12345678", "com.widevine.someother", "1");

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 30 * kTimeScale,
                             5 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:30\n"
      "#EXT-X-PLAYLIST-TYPE:VOD\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x12345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://mydomain.com\",KEYID=0xfedc,IV=0x12345678,"
      "KEYFORMATVERSIONS=\"1\","
      "KEYFORMAT=\"com.widevine.someother\"\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:30.000,\n"
      "file2.ts\n"
      "#EXT-X-ENDLIST\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

class LiveMediaPlaylistTest : public MediaPlaylistTest {
 protected:
  LiveMediaPlaylistTest()
      : MediaPlaylistTest(MediaPlaylist::MediaPlaylistType::kLive) {}
};

TEST_F(LiveMediaPlaylistTest, Basic) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:20\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:20.000,\n"
      "file2.ts\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(LiveMediaPlaylistTest, TimeShifted) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  media_playlist_.AddSegment("file3.ts", 30 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:20\n"
      "#EXT-X-MEDIA-SEQUENCE:1\n"
      "#EXTINF:20.000,\n"
      "file2.ts\n"
      "#EXTINF:20.000,\n"
      "file3.ts\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(LiveMediaPlaylistTest, TimeShiftedWithEncryptionInfo) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x12345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAes, "http://mydomain.com",
      "0xfedc", "0x12345678", "com.widevine.someother", "1");

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  media_playlist_.AddSegment("file3.ts", 30 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:20\n"
      "#EXT-X-MEDIA-SEQUENCE:1\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x12345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://mydomain.com\",KEYID=0xfedc,IV=0x12345678,"
      "KEYFORMATVERSIONS=\"1\","
      "KEYFORMAT=\"com.widevine.someother\"\n"
      "#EXTINF:20.000,\n"
      "file2.ts\n"
      "#EXTINF:20.000,\n"
      "file3.ts\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

TEST_F(LiveMediaPlaylistTest, TimeShiftedWithEncryptionInfoShifted) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x12345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAes, "http://mydomain.com",
      "0xfedc", "0x12345678", "com.widevine.someother", "1");

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x22345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAes, "http://mydomain.com",
      "0xfedd", "0x22345678", "com.widevine.someother", "1");

  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);

  media_playlist_.AddEncryptionInfo(MediaPlaylist::EncryptionMethod::kSampleAes,
                                    "http://example.com", "", "0x32345678",
                                    "com.widevine", "1/2/4");
  media_playlist_.AddEncryptionInfo(
      MediaPlaylist::EncryptionMethod::kSampleAes, "http://mydomain.com",
      "0xfede", "0x32345678", "com.widevine.someother", "1");

  media_playlist_.AddSegment("file3.ts", 30 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:20\n"
      "#EXT-X-MEDIA-SEQUENCE:1\n"
      "#EXT-X-DISCONTINUITY-SEQUENCE:1\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x22345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://mydomain.com\",KEYID=0xfedd,IV=0x22345678,"
      "KEYFORMATVERSIONS=\"1\","
      "KEYFORMAT=\"com.widevine.someother\"\n"
      "#EXTINF:20.000,\n"
      "file2.ts\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://example.com\",IV=0x32345678,KEYFORMATVERSIONS=\"1/2/4\","
      "KEYFORMAT=\"com.widevine\"\n"
      "#EXT-X-KEY:METHOD=SAMPLE-AES,"
      "URI=\"http://mydomain.com\",KEYID=0xfede,IV=0x32345678,"
      "KEYFORMATVERSIONS=\"1\","
      "KEYFORMAT=\"com.widevine.someother\"\n"
      "#EXTINF:20.000,\n"
      "file3.ts\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

class EventMediaPlaylistTest : public MediaPlaylistTest {
 protected:
  EventMediaPlaylistTest()
      : MediaPlaylistTest(MediaPlaylist::MediaPlaylistType::kEvent) {}
};

TEST_F(EventMediaPlaylistTest, Basic) {
  ASSERT_TRUE(media_playlist_.SetMediaInfo(valid_video_media_info_));

  media_playlist_.AddSegment("file1.ts", 0, 10 * kTimeScale, kMBytes);
  media_playlist_.AddSegment("file2.ts", 10 * kTimeScale, 20 * kTimeScale,
                             2 * kMBytes);
  const char kExpectedOutput[] =
      "#EXTM3U\n"
      "#EXT-X-VERSION:6\n"
      "## Generated with https://github.com/google/shaka-packager version "
      "test\n"
      "#EXT-X-TARGETDURATION:20\n"
      "#EXT-X-PLAYLIST-TYPE:EVENT\n"
      "#EXTINF:10.000,\n"
      "file1.ts\n"
      "#EXTINF:20.000,\n"
      "file2.ts\n";

  const char kMemoryFilePath[] = "memory://media.m3u8";
  EXPECT_TRUE(media_playlist_.WriteToFile(kMemoryFilePath));
  ASSERT_FILE_STREQ(kMemoryFilePath, kExpectedOutput);
}

}  // namespace hls
}  // namespace shaka